Topic:"Tariff Design" in M12551

Application for Annually Adjusted Rates for 2026 Redacted 1 TABLE OF CONTENTS 2 3 1.0 Introduction 7 4 1.1 Prior AAR Proceeding Directives 8 5 1.2 Board Directive regarding Time-varying Pricing Structure for AARs 9 6 2.0 Marginal Cost Anal...

AI summary The document outlines an application for annually adjusted rates for 2026, including sections on marginal cost analysis, tariff structures, and various board directives related to pricing and billing procedures. It covers topics such as load following, real-time pricing, shore power, wholesale market tariffs, and renewable to retail market tariffs.

1 3.0 LOAD FOLLOWING PORTION OF THE GRLF TARIFF 2 3 The GRLF Tariff is available to customers who have their own generation of continuous capability, 4 normally used to support the customer's own load, where the customer has signed an oper...

AI summary The GRLF Tariff provides services for customers with continuous generation capabilities, including Generation Replacement, Optional Load Following, and Spill. The GR service acts as a backup, the LF service is an energy-only charge, and Spill Service handles surplus generation. The 2026 LF rate is proposed to decrease by 2.183 cents per kWh compared to 2025.

1 6.0 WHOLESALE MARKET TARIFFS 2 3 Two tariffs applicable to Wholesale Market participants are adjusted on an annual basis: the Back- 4 up/Top-up (BUTU) Tariff and the Wholesale Market Spill (Spill) Tariff. 5 6 The BUTU Tariff provides opt...

AI summary The document discusses the BUTU and Spill Tariffs applicable to Wholesale Market participants, noting that four Municipal Electric Utilities (MEUs) intend to take service under the BUTU Tariff in 2026. The 2026-2027 General Rate Application includes assumptions about reciprocal billing arrangements and contract demand levels for MEUs.

3 The calculations for the proposed Energy Charge under the EBS Tariff are provided in Appendix 4 F2 RtR Energy Balancing Charge. The proposed EBS Tariff is provided in Appendix F1 . A redline 5 version is provided in Appendix H .

AI summary The document references appendices containing calculations for the proposed Energy Charge under the EBS Tariff, as well as the proposed EBS Tariff and a redline version.

1 Figure 11: Renewable to Retail Transition Tariff Charges by Cost Components Energy Charge by Components (cents per kWh) 2025 2026 Variance Fixed Cost Adder from EBS Tariff 3.264 2.166 (1.099) Annually Adjusted Energy Savings Credit 0.000...

AI summary Figure 11 presents the Renewable to Retail Transition Tariff Charges by Cost Components for 2025 and 2026, showing changes in energy and demand charges. Energy charges include a Fixed Cost Adder from EBS Tariff, an Annual Energy Cost Adjustment, and a total energy charge. Demand charges include a Demand Charge from Standby Service Tariff and a total demand charge.

4 7.4 Board Directive regarding Interruptible Service in the RTR Market 5 6 The Board provided the following directive in its Order, dated March 20, 2024, approving the 2024 7 AARs: 8 9 NS Power and Roswall are directed to explore ways in...

AI summary The Board directed NS Power and Roswall to explore interruptible service under the RtR Tariff and provide recommendations in the 2025 AAR application. NS Power proposed Terms of Reference for a pilot to Renewall, but has not yet received a response. The pilot, once approved, aims to provide insights into the interruptible process within the RtR market.

Application for Annually Adjusted Rates for 2026 Redacted 1 • ADC Load Shifting Credit (calculated post-Tariff year by NS Power based on actual 2 system benefits). 3 4 8.1 ELIADC Energy Charge 5 6 The annual ELIADC Energy Charge is calcula...

AI summary The document outlines the calculation of the ELIADC Energy Charge, which includes components such as the Customer Baseline Cost, Fixed Cost Recovery, Customer Baseline Adder, and Variable Capital Charge, all aimed at covering NS Power's incremental costs to serve PHP.

3 8.1.1 CBL Cost and CBL Energy Charge 4 - 5 As defined in Section 8.1, the CBL Energy Charge represents the average annual incremental non- - 6 capital cost (in $/MWh), net of FCR, to serve PHP's forecast load. For the 2026 Tariff year, t...

AI summary The CBL Cost and CBL Energy Charge for the 2026 Tariff year are defined and calculated, with the CBL Cost being $73.60/MWh and the CBL Energy Charge being $69.85/MWh. The FCR of $3.75/MWh is transferred to the CBLA under the ELIADC Tariff provisions. Modeling assumptions are detailed in Confidential Appendix G2.

Application for Annually Adjusted Rates for 2026 Redacted • If CBL Cost ≤ $56.75/MWh : CBLA = 75% × (61.75 – CBL Cost)[49](#page-40-1) 1 2 3 • If CBL Cost > $56.75/MWh and < $61.75/MWh : CBLA = [75% × (61.75 – CBL Cost)] + [FCR – (75% × (6...

AI summary The document outlines the calculation of the Customer Baseline Adder (CBLA) for 2026, based on the Customer Baseline (CBL) Cost and Fixed Cost Recovery (FCR). The CBLA is set at $5.00/MWh for 2026, reflecting the full recovery of the minimum FCR under the revised tariff, an increase from $1.00/MWh in 2025.

5 8.2 ELIADC Energy Charge Calculation 6 7 The ELIADC Energy Charge is composed of the CBL Energy Charge (i.e. CBL Cost net of FCR 8 which is transferred to the CBLA, as described in Section 8.1), CBLA, and VCC. 9 - 10 Figure 15 presents t...

AI summary The ELIADC Energy Charge is calculated using the CBL Energy Charge, CBLA, and VCC. The 2026 ELIADC Energy Charge is set at $75.87/MWh, with the proposed tariff detailed in Appendix G1 and a redline version in Appendix H. The amendments to the ELIADC Tariff are based on the Company's October 31, 2025 Compliance Filing under M12184.

16 Figure 15: ELIADC Energy Charge Energy Charge by Component 2026 ($/MWh) CBL Energy Charge 69.85 CBLA 5.00 Variable Capital Cost 1.02 Total $75.87 Application for Annually Adjusted Rates for 2026 Redacted 1 9.0 RELIEF SOUGHT 2 3 NS Power...

AI summary The document presents the ELIADC Energy Charge for 2026, including various components such as CBL Energy Charge, CBLA, and Variable Capital Cost. It also includes an application for Annually Adjusted Rates for 2026, requesting the removal of a specific sensitivity analysis and approval of proposed tariff changes.

2026 AAR Application Appendix A1 Page 1 of 5 REDACTED (CONFIDENTIAL INFORMATION REMOVED) GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 1 of 5

AI summary This document is the first page of a redacted appendix from the 2026 Annual Application Report (AAR) related to the Generation Replacement and Load Following Tariff. It is part of a regulatory proceeding involving Nova Scotia Power and the Nova Scotia Energy Board.

SERVICE DEFINITION Service under this tariff consists in delivery of supplemental power to partial requirement customers who operate their own dispatchable generation equipment, as approved to be connected to the grid by the Company. The S...

AI summary The Service under this tariff provides supplemental power to partial requirement customers with their own dispatchable generation equipment. It includes Generation Replacement, Optional Load Following, and Spill Service, with specific definitions for each component and billing under full requirement tariffs for supplementary power.

2026 AAR Application Appendix A1 Page 2 of 5 REDACTED (CONFIDENTIAL INFORMATION REMOVED) GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 2 of 5

AI summary This document is part of the 2026 Annual Application Report (AAR) Appendix A1, focusing on the Generation Replacement and Load Following Tariff. The content has been redacted, indicating that sensitive or confidential information has been removed.

GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 4 of 5 Specific requirements shall be stipulated by way of a written operating agreement. - (3) In assessing issues which might unduly affect the integrity of the power supply system th...

AI summary The Generation Replacement and Load Following Tariff outlines specific requirements for service, including reliability standards, customer responsibilities for special metering, transformer losses adjustments, and power factor requirements. The Company retains control over metering locations and applies adjustments for non-compliance with power factor standards.

2026 AAR Application Appendix B1 Page 1 of 6 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART TRANSMISSION REAL TIME PRICING TARIFF Page 1 of 3

AI summary The document is a redacted page from the 2026 Annual Application Report (AAR) Appendix B1, focusing on the One Part Transmission Real Time Pricing Tariff. It is part of a regulatory proceeding and contains confidential information that has been removed.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff is available to customers served at 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, who must make a written request to take service under this tariff.

ONE PART TRANSMISSION REAL TIME PRICING TARIFF Page 2 of 3 will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering. - (3) The cost of any special...

AI summary The ONE PART TRANSMISSION REAL TIME PRICING TARIFF outlines requirements for customers, including capital contributions for metering, transformer loss adjustments, service terms, and power factor maintenance. Customers must maintain a minimum power factor or face billing adjustments.

2026 AAR Application Appendix B1 Page 4 of 6 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 1 of 3

AI summary This document is a page from the 2026 AAR Application Appendix B1, which outlines a One Part Distribution Voltage Real Time Pricing Tariff. The content is partially redacted due to confidentiality, and it appears to be part of a regulatory proceeding related to electricity rates and tariff design.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary The document outlines special conditions for energy pricing and metering. Hourly energy price forecasts are to be provided to customers on a regular schedule, with final prices determined 20 minutes before each hour. Metering is typically at the low voltage side of the transformer, but primary metering may be required based on customer needs.

2026 AAR Application Appendix B1 Page 5 of 6 REDACTED (CONFIDENTIAL INFORMATION REMOVED) will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering....

AI summary The document outlines the terms and conditions for customers taking service under a specific tariff, including capital contribution requirements, transformer loss adjustments, service duration, and power factor maintenance. It also details transition rules for customers moving from interruptible to firm service and vice versa.

34 Method Used to Calculate 1P-RTP Tariffs: 35

AI summary This section of the document discusses the method used to calculate 1P-RTP tariffs, though no detailed explanation is provided in the text snippet.

AVAILABILITY - (1) This tariff is available to port authorities of Nova Scotia for the sole purpose of providing port electricity to cruise ships docked in ports to meet their own consumption needs in displacement of the on-board self-gene...

AI summary This tariff is available to Nova Scotia port authorities for providing electricity to cruise ships, with specific demand thresholds and supply interruption requirements. It is seasonal, applying from April 1 to November 30, and outlines the order in which rate classes are called upon during supply shortfalls.

ENERGY CHARGE Energy charges will vary by voltage level of the point of delivery and will be made up of two components. - (1) Annually adjusted fuel cost component which shall be the Company's forecast average annual marginal energy cost a...

AI summary Energy charges are determined based on voltage levels and consist of an annually adjusted fuel cost component, which is the Company's forecast average annual marginal energy cost, approved for use with the GR&LF tariff and adjusted for line losses at the point of delivery voltage level.

2026 AAR Application Appendix C1 Page 3 of 4 REDACTED (CONFIDENTIAL INFORMATION REMOVED) SHORE POWER TARIFF Page 3 of 4 - metering transformers supplied by NSPI. NSPI owns and is responsible for the maintenance of meters and metering trans...

AI summary The Shore Power Tariff outlines responsibilities and requirements for the Port Authority and NSPI regarding metering, operational procedures, and billing adjustments. The Port Authority must provide trained staff and submit vessel schedules, while NSPI manages metering equipment. Customers may be required to cover additional capital costs for primary metering and special systems. Adjustments for transformer losses and power factor requirements are also specified.

2026 AAR Application Appendix C1 Page 4 of 4 REDACTED (CONFIDENTIAL INFORMATION REMOVED) SHORE POWER TARIFF Page 4 of 4 and/or operation. These specific requirements shall be stipulated by way of a written operating agreement. (10) In asse...

AI summary The document outlines requirements for shore power tariff operations, including the need for a written operating agreement and considerations for power supply system integrity such as reliability, harmonic voltage and current levels, voltage flicker, and stability.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary The tariff outlines special conditions for customers supplied at high voltage levels, specifying adjustments for meter readings, separate service agreements, reliability requirements, and conditions for attributing capacity credit factor (CCF) values. These provisions ensure system integrity and address resource adequacy needs.

2026 AAR Application Appendix E1 Page 6 of 8 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 6 of 6 - (d) The capacity derived based on the CCF is procured and available to the wholesale custo...

AI summary This section outlines the obligations of wholesale customers under the Wholesale Market Backup/Top-Up Service Tariff, including payment requirements for undelivered energy or capacity and procedures for adjusting the Capacity Credit Factor (CCF) when discrepancies arise.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Energy Balancing Service Tariff applies to LRS taking service under this tariff, requiring them to also take service under the OATT, Standby Service Tariff, and Renewable to Retail Market Transition Tariff. The service is based on metered energy quantities and is independent of the LRS' forecasts. Hourly top-up and spill quantities are determined based on energy supply and demand at the delivery point.

2026 AAR Application Appendix F1 Page 4 of 9 REDACTED (CONFIDENTIAL INFORMATION REMOVED) STANDBY SERVICE TARIFF Page 1 of 4 Renewable to Retail

AI summary This document is a page from the 2026 AAR Application Appendix F1, which discusses the Standby Service Tariff under the Renewable to Retail section. The content is partially redacted, indicating that some information has been removed for confidentiality.

STANDBY SERVICE Standby Service is a supplemental generation capacity service provided to Licensed Retail Suppliers (LRS). The service is provided in combination with Energy Balancing Service under the Energy Balancing Service Tariff. The...

AI summary Standby Service is a supplemental generation capacity service provided to Licensed Retail Suppliers (LRS) in Nova Scotia, consisting of capacity adequacy and top-up capacity components. It is provided alongside Energy Balancing Service under the Energy Balancing Service Tariff and is subject to the LRS Terms and Conditions.

AVAILABILITY This Standby Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by Renewable to Retail (RtR) Customers. This Standby Service Tariff is provided under the following t...

AI summary The Standby Service Tariff applies to the LRS to enable Renewable to Retail (RtR) Customers to purchase renewable low-impact electricity, subject to the LRS having a valid Participation Agreement with NS Power and providing service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to Load Replacement Services (LRS) taking service under OATT, Energy Balancing Service Tariff, and Renewable to Retail Market Transition Tariff. The service is complementary to generation ancillary services under OATT and applies only to firm load.

STANDBY SERVICE TARIFF Page 2 of 4 Renewable to Retail

AI summary The document discusses the 'Renewable to Retail' section of the Standby Service Tariff, which appears on page 2 of 4. This section likely outlines how renewable energy is integrated into retail electricity services, though specific details are not provided in the excerpt.

Where: - o "k" is the number of otherwise applicable bundled service rate classes to RtR customers of an LRS. - o "CMPFDi" is hourly kW Class Monthly Peak Firm Demand of the LRS firm load in each tariff class at the time of system coincide...

AI summary The document defines technical terms related to load replacement service (LRS) and customer rate classes, including CMPFDi and CMDAFi, which are used to calculate peak firm demand and adjustment factors for different customer classes.

2026 AAR Application Appendix F1 Page 8 of 9 REDACTED (CONFIDENTIAL INFORMATION REMOVED) RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Page 1 of 2 Renewable to Retail

AI summary This document outlines the 'Renewable to Retail' transition tariff, which is part of the 2026 AAR Application Appendix F1. The page is redacted, indicating that confidential information has been removed.

APPLICABILITY - (1) The RTT is applicable to the LRS, and is in addition to (and not in substitution of) any charges owing by the LRS to NS Power under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, or the Energy B...

AI summary The Renewable to Retail Market Transition Tariff (RTT) applies to Licensed Retail Suppliers (LRS) and operates alongside other tariffs such as the Open Access Transmission Tariff (OATT), Standby Service Tariff, and Energy Balancing Service Tariff. The RTT includes energy and demand charges with annual adjustments based on forecasted differences between NS Power's avoided costs and system fuel costs.

The Energy Charge is made up of the following components: Energy Charge Components cents per kWh Fixed Cost Adder from Energy Balancing Service Tariff 2.166 Annually Adjusted Energy Savings Credit 0.000 Annual Energy Cost Adjustment 2.198...

AI summary The Energy Charge consists of components such as the Fixed Cost Adder from the Energy Balancing Service Tariff and the Annual Energy Cost Adjustment, totaling 4.363 cents per kWh. It applies to the LRS' monthly displaced energy on NS Power's generation system, calculated as total monthly LRS load minus the top-up quantity determined under the Energy Balancing Service Tariff.

Renewable to Retail Market Transition Tariff - Annual Energy Cost Adjustment Calculations 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 MWh Load at Transmission Level 9,795,528 9,824,765 9,848,989 9,869,561 9,832,403 9,835,173 9,7...

AI summary The document presents annual energy cost adjustment calculations for the Renewable to Retail Market Transition Tariff from 2016 to 2026, including metrics such as MWh Load, Total Fuel Cost, Average Unit Cost, and Differential. These figures illustrate trends in energy costs and adjustments over time.

TERM The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approval of a subsequent term for this Tariff, including the appro...

AI summary The third term of the Tariff is set for 2026, subject to revision by a decision from the NSEB. NS Power or PHP can request the Board's approval for a subsequent term, including adjustments to pricing elements or PHP's transition to an alternative tariff.

AVAILABILITY - (a) This Tariff is applicable to operations at PHP's mill site at Point Tupper, and is premised upon PHP's electricity requirements being exclusively served by NS Power. - (b) In addition to the priority interruptible servic...

AI summary The tariff applies to PHP's operations at Point Tupper, assuming NS Power exclusively serves their electricity needs. Load management is required via Active Demand Control protocols, and service voltage must be at least 138 kV. Transformer ownership is the responsibility of PHP, and the tariff cannot be combined with others without NSEB approval.

TERM The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approval of a subsequent term for this Tariff, including the appro...

AI summary The third term of the Tariff is set for 2026, subject to potential revision by a decision from the NSEB (Term). Either NS Power or PHP can request the Board's approval for a subsequent term, including adjustments to the Tariff's pricing elements or PHP's transition to an alternative tariff.

ENERGY BALANCING SERVICE TARIFF Page 1 of 3 Renewable to Retail

AI summary The document introduces the Energy Balancing Service Tariff, focusing on the 'Renewable to Retail' initiative, which likely involves mechanisms for integrating renewable energy into the retail electricity market.

ENERGY BALANCING SERVICE The Energy Balancing Service is a supplemental generation service provided to Licenced Retail Suppliers (LRS) in respect of the Licenced Retail Supplier's Renewable to Retail (RtR) Customers utilizing the productio...

AI summary The Energy Balancing Service is a supplemental generation service provided to Licensed Retail Suppliers (LRS) for their Renewable to Retail (RtR) Customers. It ensures service reliability by delivering complementary energy and receiving surplus generation, and must be used in conjunction with Standby Service under the Standby Service Tariff.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary This section outlines the applicability of the Energy Balancing Service Tariff, specifying that LRS must also take service under other tariffs, and clarifies how service is based on metered energy quantities and independent of forecasts. It also defines how hourly top-up and spill quantities are calculated.

ENERGY BALANCING SERVICE TARIFF Renewable to Retail Page 2 of 3 generation adjusted by the deduction of transmission locational losses, as applicable to the geographic zone in which the generating facility is interconnected, over its aggre...

AI summary The Energy Balancing Service Tariff outlines requirements for renewable energy generation to align with customer load, considering locational and distribution losses. It also sets conditions for qualifying for the service, including compliance with regulations and approval of spill capacity by NS Power.

SERVICE DEFINITION Service under this tariff consists in delivery of supplemental power to partial requirement customers who operate their own dispatchable generation equipment, as approved to be connected to the grid by the Company. The S...

AI summary The service definition outlines three components of power delivery for partial requirement customers with dispatchable generation equipment: Generation Replacement Service, Optional Load Following Service, and Spill Service. These services address backup power, load imbalances, and excess generation, respectively, with specific billing arrangements under applicable tariffs.

GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 4 of 5 - (3) In assessing issues which might unduly affect the integrity of the power supply system the following would be considered: reliability, harmonic voltage and current levels,...

AI summary The Generation Replacement and Load Following Tariff outlines conditions for maintaining power supply integrity, customer responsibilities for special service requirements, transformer loss adjustments, and power factor maintenance requirements to ensure system reliability and proper billing.

Power Factor Constant Power Factor Constant 90-100% 1.0000 65-70% 1.1255 80-90% 1.0230 60-65% 1.1785 75-80% 1.0500 55-60% 1.2455 70-75% 1.0835 50-55% 1.3335 - (8) Qualifying generating facility must meet the following requirements:

AI summary The text presents a table outlining power factor constants for different ranges, followed by a requirement for qualifying generating facilities. The table is part of a regulatory proceeding related to energy management and tariff structures.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at voltage less than 69 kV and have loads of 2,000 KVA or 1,800 kW, and over.

AI summary The tariff is available to customers with loads below certain thresholds and served at voltage less than 69 kV. A written request is required to take service under this tariff.

ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 2 of 3 will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering. - (3) The cost of any...

AI summary The document outlines the terms of the One Part Distribution Voltage Real Time Pricing Tariff, including capital contributions for metering, transformer loss adjustments, service duration, and power factor requirements. It also addresses eligibility for firm service and the conditions under which customers may transition between service types.

RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Page 2 of 2 Renewable to Retail

AI summary The document introduces the Renewable to Retail Market Transition Tariff, focusing on the transition from renewable energy sources to the retail market. It outlines the framework for integrating renewable energy into the retail electricity market.

The Demand Charge is made up of two components: Demand Charge Components dollars per kW Demand Charge from Standby Service Tariff $3.3975.452 Annually Adjusted Demand Savings Credit $0.000 Total $3.3975.452 The Demand Charge is applicable...

AI summary The Demand Charge consists of two components, with the Demand Charge from Standby Service Tariff set at $3.3975.452 per kW and the Annually Adjusted Demand Savings Credit at $0.000 per kW. The charge applies to the LRS' monthly displaced demand on NS Power's system, calculated using the Standby Service Tariff.

SHORE POWER TARIFF Page 2 of 4 A credit equal to 32 cents per peak kilovolt-ampere of monthly peak demand will be applied where the transformer is owned by the customer and the customer is served at a transmission voltage level.

AI summary The Shore Power Tariff provides a credit of 32 cents per peak kilovolt-ampere of monthly peak demand for customers who own the transformer and are served at a transmission voltage level.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary This section outlines the applicability of the Standby Service Tariff, specifying that it applies in conjunction with other tariffs such as OATT and the Energy Balancing Service Tariff, and is limited to firm load only.

STANDBY SERVICE TARIFF Renewable to Retail Page 2 of 4

AI summary The document discusses the Standby Service Tariff under the Renewable to Retail program, focusing on the structure and implementation of the tariff. It outlines the terms and conditions for standby service, which is a critical component of the energy distribution framework.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 2 of 6 (b) For dispatchable generation, GC = the supplier's maximum capacity contracted to provide its wholesale customers' demand. CD is the customer's Contract Demand CCF is the capacity...

AI summary The document outlines the calculation of capacity contribution factor (CCF) for third-party suppliers in the Wholesale Market Backup/Top-Up Service Tariff. It defines key terms such as dispatchable generation, customer contract demand, and CCF, which is determined by NSPI using information from suppliers and generation planning studies.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 3 of 6 The tariff is applicable to the scheduled backup/top-up load of participating customers under the following terms and conditions: - (1) The wholesale customer has provided written n...

AI summary This section outlines the terms and conditions for the Wholesale Market Backup/Top-Up Service Tariff. Key requirements include written notice from the wholesale customer, minimum subscription periods, and the need for adequate metering equipment. Applications must be submitted by specific deadlines, and NSPI must respond within set timelines.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary This section outlines special conditions for a high-voltage transmission tariff, including adjustments for metering locations, mandatory OATT service, service denial criteria, service agreements, load integrity requirements, and conditions for attributing capacity credit factor (CCF) values to wholesale customers.

2026 AAR Application Appendix J Page 1 of 3 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Date: October 15, 2025 To: Annually Adjusted Rates Stakeholders From: Regulatory Affairs, NS Power Subject: NS Power Proposal for Changes to 1P-RTP Tar...

AI summary Nova Scotia Power Inc. (NS Power) is proposing changes to the calculation of One-Part Real Time Pricing (1P-RTP) Adders in response to the Board's directive on its 2025 AAR Application. The changes are due to challenges in calculating avoided fuel costs in the complex air emission market.

Background on 1P-RTP Tariff Design and Operation There are currently three 1P-RTP Tariffs in effect; one for each of the three voltage levels at which RTP customers may be served. The tariffs are: - 1. One Part Extra High Voltage (EHV) RTP...

AI summary The document outlines the structure of three 1P-RTP Tariffs in Nova Scotia, each corresponding to different voltage levels. These tariffs include energy charges based on hourly marginal costs and fixed cost adders that recover non-fuel related costs and adjust for fuel cost imbalances. The adders are updated annually and help stabilize overall tariff costs.

Next Steps Stakeholders are requested to provide comments on the proposed approach (if any), as outlined in this letter, by Friday, October 24, 2025, following which NS Power will address stakeholders' comments in consideration of its 2026...

AI summary Stakeholders are invited to comment on the proposed changes to transmission rates in the 1P-RTP and Shore Power Tariffs, which would eliminate separate rates for EHV and HV transmission levels if the Board accepts the proposed change in the 2026-2027 Cost of Service Study. NS Power will consider these comments when filing its 2026 AAR Application.

NON-CONFIDENTIAL 1 Request IR-4: 2 3 In the 2025 AAR proceeding, NS Power stated that the impact of recent emissions standards 4 on the 1P-RTP tariff "will continue to adversely affect the methodology until system dispatch 5 is no longer t...

AI summary NS Power argues that the SO2 emissions limit will no longer be a constraint for the 1P-RTP tariff design once renewable energy sources are added to the system. It also raises concerns about the reliability of the current avoided fuel cost methodology due to the complexity of the air emission market. The request asks NS Power to clarify its position and explain how the system composition might change if the load served under the 1P-RTP tariff was not present.

REDACTED 1 Further, NS Power has proposed a PHP Deferral mechanism, as part of the 2026-2027 GRA 2 (M12451), to recognize differences between the GRA ATL rate assumptions and those 3 ultimately approved in an ELIADC successor tariff, inclu...

AI summary NS Power has proposed a PHP Deferral mechanism as part of the 2026-2027 GRA (M12451) to address differences between GRA ATL rate assumptions and those approved in an ELIADC successor tariff, including the timing of Goose Harbour Lake Wind Farm operations.

NON-CONFIDENTIAL 1 (b) In response to BW's first of two "clarifying edits that NSPI should also consider,"4 NS 2 Power revised the FCR definition at page 2 of the ELIADC Tariff, adding: "For clarity, the 3 CBLA calculation ensures that the...

AI summary In response to BW's request for clarification, NSPI revised the FCR definition in the ELIADC Tariff, ensuring the FCR is at least $5.00 per MWh. This change was approved by the Board in its December 8, 2025 Order. The Company has attached the updated ELIADC Tariff with revisions to the 2026 Variable Capital Charge and Energy Charge, as well as the 2026 AAR proposed pricing.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 3 of 8 $61.75/MWh. The FCR transferred from the CBL Cost is then added to the calculated CBLA to equal $5/MWh FCR. x When the forecast CBL Cost is at or over $61.75/MWh, the FCR to b...

AI summary The ELIADC Energy Charge is calculated by summing the CBL Energy Charge, CBLA, and VCC. When the forecast CBL Cost exceeds $61.75/MWh, the FCR transferred is capped at $3.75/MWh, with the difference assigned a value of zero. These charges are submitted for Board approval annually as part of the Annual Adjusted Rates proceeding.

TERM The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approval of a subsequent term for this Tariff, including the appro...

AI summary The third term of the Tariff is set for 2026, subject to potential revision by the NSEB. NS Power or PHP may request approval for a subsequent term, including adjustments to pricing elements or a transition to an alternative tariff.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 7 of 8 received by NS Power. NS Power may, however, permit an earlier conversion. If PHP desires to return to interruptible service in the future, PHP may convert to an interruptible...

AI summary The document outlines the conditions under which Port Hawkesbury Paper LP (PHP) can convert between firm and interruptible service tariffs with Nova Scotia Power (NS Power). PHP may request an earlier conversion to interruptible service, and NS Power may allow an earlier conversion from firm to interruptible service after two years of service under the firm tariff.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 4 of 8 - (b) Material and unexpected change in the cost of generation as compared to the CBL Energy Charge calculation; - (c) Material and unexpected increased electricity consumptio...

AI summary The document outlines conditions under which the CBL Energy Charge may be adjusted, including unexpected changes in generation costs, increased or decreased electricity consumption by PHP, and scenarios requiring Board adjudication if PHP and NS Power cannot agree on modifications.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 5 of 8 The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approva...

AI summary The third term of the Extra Large Industrial Active Demand Control Tariff is set for 2026, subject to potential revision by the NSEB. NS Power or PHP may seek approval for a subsequent term or transition to an alternative tariff before the third term ends.

Metering will normally be at the low voltage side of the transformer and, for measurement and, where applicable, billing purposes, meter readings will be increased by 1.1%. Should the Mill's requirements make it necessary for NS Power to p...

AI summary The text outlines metering requirements under a tariff, specifying that metering is typically at the low voltage side of the transformer. If primary metering is required by the Mill, PHP must cover the additional cost as a capital contribution. Special metering or communication systems required by PHP must also be funded by PHP as a capital contribution.

REDACTED 1 Request IR-1: 2 3 Reference: Application, page 23, footnote 27. 4 5 "As of the time of this application, the portion of MEUs' demand and energy 6 to be served under the Municipal Tariff in 2026 has not been finalized, yet. 7 8 M...

AI summary The text discusses a request (IR-1) related to the MEUs' decision on BUTU service under reciprocal or non-reciprocal billing arrangements, contingent on specific contract demand levels. It asks for forecasts of billing demand, energy requirements, and Spill Tariff energy for 2026 under each scenario.

REDACTED 1 Response IR-1: 2 3 (a) Demand and energy for 2026 are estimated based on 2024 hourly load shapes and 2018 4 hourly wind production and assume that BUTU is only provided up to the actual hourly 5 demand of the MEUs. The estimates...

AI summary The response estimates demand and energy for 2026 using 2024 hourly load shapes and 2018 hourly wind production data, assuming BUTU is only provided up to the actual hourly demand of the MEUs.

Annually Adjusted Rates for 2026 (NSEB M12551) NSPI Responses to NSEB Information Requests 1 Request IR-8: 2 3 Appendix E5 provides the calculation for the . Please explain how the 4 5 6 Response IR-8: 7 8 Appendix E5 provides the calculat...

AI summary The response to Request IR-8 explains that Appendix E5 calculates the marginal cost-based Demand Charge of $13.430 per kW, supporting a four-year phase-in of embedded cost-based charges under the BUTU Tariff. The calculation uses the annual levelized capacity cost, which was used to determine the interruptible credit of $7.638/kVA in the 2026-2027 GRA.

NON-CONFIDENTIAL 1 Request IR-14: 2 3 Reference: Standby Service, page 34. 4 5 With respect to Figure 10, please add a column to show the percentage change for each 6 component of the Standby Service Tariff compared to 2025 rates. Where th...

AI summary The request asks for a percentage change column in Figure 10 of the Standby Service Tariff compared to 2025 rates, with detailed explanations for changes exceeding 10%. The response refers to a figure but does not provide the data or explanations requested.

NON-CONFIDENTIAL 1 Decrease in ancillary generation related costs of 19 percent between the submitted OATT 2 applications in the 2023-2024 GRA and the 2026-2027 GRA. 3 4 Exclusion of the interruptible credit amount of $11.2 million from th...

AI summary The submitted OATT applications show a 19% decrease in ancillary generation costs between the 2023-2024 and 2026-2027 GRA periods. However, the exclusion of $11.2 million in interruptible credit from standby demand charges caused a 76% increase in demand charge costs, partially offset by a 6% rise in demand usage. A 60.5% residual imbalance is attributed to the cross-over effect.

Annually Adjusted Rates for 2026 (M12551) NSPI Responses to REI Information Requests 1 Request IR-17: 2 3 (a) Under the current RTT framework, please confirm whether the Annual Energy Cost 4 Adjustment would require NS Power to provide a c...

AI summary The document outlines a series of questions regarding the Annual Energy Cost Adjustment under the current RTT framework, specifically focusing on whether credits would be provided to RtR customers when avoided costs exceed system fuel costs, and whether any caps or constraints apply to these credits. The questions also ask for references to specific tariff provisions and Board orders.

1.2 Role of Robert Cary & Associates Inc Robert Cary & Associates Inc (RCAI) was engaged by Nova Scotia Power Inc (NS Power or Company) in September, 2014 to assist and make recommendations to the Company with respect to the development in...

AI summary Robert Cary & Associates Inc (RCAI) was engaged by Nova Scotia Power Inc to assist in developing the framework for the Renewable to Retail (RtR) market in Nova Scotia, as outlined in the Electricity Act. Mr. Cary has extensive experience in electricity market design, particularly in Ontario and Nova Scotia, including work on tariff design and renewable energy trading systems.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 5 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Following discussions with NS Power, RCAI prepared a report[1](#page-64-1) and made a related presentation to stakeholders on...

AI summary RCAI collaborated with NS Power to develop the framework and tariff instruments for the Renewable to Retail (RtR) Market, including distribution tariffs, energy balancing service tariffs, and market rule amendments, based on stakeholder feedback and discussions from 2014 to 2015.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 6 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) The RtR supply chain will comprise: - Generators of renewable low impact electricity located in Nova Scotia, as certified by t...

AI summary The document outlines the RtR (Regulated Rate) supply chain, which involves certified renewable generators, licensed retail suppliers (LRSs), and retail customers in Nova Scotia. NS Power will provide services such as physical delivery, backup, and balancing to ensure reliability for RtR customers. The framework assumes all RtR tariffs and cost recovery apply universally, regardless of generator location.

1.4 Executive Summary of the Market Design as Proposed The RtR Market design is embodied in a number of instruments: • Each RtR generator is required to execute a Wholesale Market Participation Agreement by which it is bound by the relevan...

AI summary The proposed Renewable to Retail (RtR) Market design requires each RtR generator to execute a Wholesale Market Participation Agreement and a Generator Interconnection Agreement, which bind them to the relevant provisions of the Wholesale and RtR Market Rules and the Open Access Transmission Tariff (OATT).

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 7 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) technical standards and to communicate with and accept direction from the Nova Scotia Power System Operator (NSPSO) while supp...

AI summary The document outlines the design of generation-related tariffs for 2026, including Standby Service, Energy Balancing Services, and RtR Transition Tariffs. These tariffs are intended to ensure system reliability, manage surplus and deficit generation, and recover costs from Licensed Retail Suppliers (LRS). The charges are based on a Cost of Service analysis model and remain consistent with the OATT charges.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 8 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) from those currently in effect, with the exception of modification of the hourly imbalance service in schedule 4 to avoid doub...

AI summary The document outlines the proposed distribution tariff for 2026, specifying how distribution-connected RtR customers will be billed by NS Power and how LRSs will pass on these charges. It also notes that transmission-connected RtR customers will not be subject to the distribution tariff but will maintain a relationship with NS Power via an operating agreement.

2.1 LRS Participation Agreements Each LRS will be required to execute an LRS Participation Agreement with NS Power. The proposed form of the LRS Participation Agreement is attached as Appendix B to the LRS Terms and Conditions, and will bi...

AI summary This section outlines the requirements for LRS Participation Agreements with NS Power, detailing the terms and conditions that bind LRS to specific tariffed services and market participation rules. It also describes the obligations for both LRS and non-LRS RtR generators to become Market Participants.

2.3 Customer Relationship with NS Power As noted below, customers connected at distribution voltage will become distribution customers. The request to switch to RtR service will trigger a change from being a Bundled Service customer to dis...

AI summary This section discusses the customer relationship with NS Power, distinguishing between distribution and transmission voltage customers. Customers connected at distribution voltage will become distribution customers, while those connected at transmission voltage will maintain a direct relationship with NS Power through an operating agreement.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 12 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) interruptibility would be independent of bundled / RtR status, and would be independent of whether RtR generation was operati...

AI summary The document discusses the complexities of implementing interruptible service for RtR (Real Time Retail) customers, noting that current systems and tariffs are not in place for such service. NS Power would need to address several issues, including contractual arrangements and tariff amendments, if interruptible RtR service is requested.

3.4 Full / partial service Some stakeholders provided design feedback indicating a preference that large customers should have the option to take partial RtR service from NS Power. This was understood by the Company to mean that a portion...

AI summary Stakeholders suggested that large customers should have the option to take partial Real Time Retail (RtR) service from NS Power. The concept of partial service was discussed, with two forms: unrestricted and restricted. Unrestricted partial service was excluded due to potential distortions in load shape and cost transfer to other customers.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 13 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) seasonal variability. Costs of such revision would need to be borne by the applicant for such type of service. And such devel...

AI summary The document discusses considerations for enabling large customers to choose a restricted partial Real Time Retail (RtR) service, but notes that no precedents exist for this at the retail level. NS Power decided not to include partial service provisions in the design framework, citing added complexity and the need to leverage existing tariffs. Full service models apply separately to each customer account.

• In either configuration: - o the amount corresponding to the RtR distribution charge on the B-t-M generation quantity; - o the amount corresponding to the OATT charges on the B-t-M generation quantity; - o the amount corresponding to the...

AI summary The text outlines various components that may be included in either configuration, including distribution charges, OATT charges, generation reserve margins, market transition tariffs, and changes in customer load shapes.

• And in the micro-grid configuration: - o customer monthly charges on all but one customer; and - o an amount that could arise from consolidation of customer load shape (whereby the diversity is lost to NS Power) and possibly from the cus...

AI summary The text discusses the micro-grid configuration and the implications of customer load shape consolidation and customer class differences. It references the Retailers Regulations from 2015, which classify B-t-M as a form of RtR supply, requiring LRS to execute an LRS Participation Agreement and be subject to RtR tariffs rather than Bundled Service tariffs. Two methods to meet the no-harm requirement are outlined: secondary metering and enhanced recovery of embedded costs.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 15 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - Enhanced recovery of embedded costs: - o As noted above, without secondary metering for use in RtR tariff settlement, a B-t...

AI summary The document discusses the need for secondary metering to recover embedded costs associated with a B-t-M arrangement. Without secondary metering, costs could be stranded and passed on to remaining NS Power customers. NS Power has opted for secondary metering as a simpler solution to avoid creating a special B-t-M Transition Tariff.

3.7.2 Aggregated Billings to the LRS The following tariffs will use charge determinants that reflect the aggregate of all RtR customer loads: - Transmission service under the OATT, including: - o Network service under schedule 10; - o Anci...

AI summary This section outlines the tariffs that will use charge determinants based on the aggregate of all RtR customer loads, including transmission service under the OATT and standby service.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 18 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) The financial market option as presented would have left NS Power Bundled Service tariffs in place for all customers. Under t...

AI summary The document discusses the adoption of a disaggregated tariff approach for the Real Time Retail (RtR) market by NS Power, which provides greater transparency compared to other alternatives. The approach involves two categories of tariffs: the Distribution Tariff based on individual customer meter readings, and LRS tariffs based on aggregated data. The existing OATT is generally applicable, except for Schedule 4, which is replaced by Schedule 4A for RtR Market Participants.

5.1 Context The supply-related cost represents the largest component of the existing cost of Bundled Service, as it includes the asset-related cost (including financing and return on equity) of all generating plant, the fixed and variable...

AI summary The supply-related cost is the largest component of the Bundled Service cost, including asset-related costs, O,M & G costs, and fuel costs. To avoid economic disadvantage, NS Power must recover the same amount from RtR customers as would have been recovered from Bundled Service customers, adjusted for avoided costs. Recovery will occur through Energy Balancing Service, Standby Service, and RtR Market Transition Tariff revenue.

5.3 Energy Balancing Services (top-up and spill); Design Principles Top-up and spill services are addressed together under the proposed EBS tariff. As both are energybased charges, the rate determination of each shares common elements, and...

AI summary The document discusses the design principles for Energy Balancing Services (EBS) under a proposed tariff, noting that both top-up and spill services are addressed together due to their shared rate determination and settlement elements.

5.3.1 Purpose The purposes of the top-up and spill services are essentially the time-shifting of the RtR generation supply so that it will match the needs of the RtR load. Each LRS will effectively use the NS Power system as an energy stor...

AI summary The purpose of the top-up and spill services is to time-shift RtR generation supply to match RtR load, using the NS Power system as energy storage. The tariff arrangement compensates NS Power and LRS for incremental costs and savings, and covers fixed generation costs classified as energy-related in the CoS model.

• Consistency - o Except under conditions of transmission constraint (to which OATT section 33 applies), any over-forecasts in one delivery zone and under-forecasts in others would naturally offset each other in system management. The exis...

AI summary The text discusses the inconsistency in the OATT schedule 4 regarding dispersed load and how Option 2 would address this by comparing generation and load forecasts on an aggregate basis per LRS, avoiding net charges that do not recognize offsets.

• Complexity - o Option 1 requires the use of separate supply and delivery point load calculations for OATT schedule 4 settlement, as well as aggregate supply and load forecast calculations for top-up and spill calculations. - o Option 2 u...

AI summary The text outlines two options for handling load and supply calculations under OATT schedule 4 and 4A. Option 1 involves separate calculations for supply and delivery points, while Option 2 uses aggregated metering results for top-up and spill calculations.

5.3.3 Self-supply of Top-up Consideration has been given to the potential for an LRS to self-supply top-up service from a generator other than its normal supplier(s) of renewable low impact electricity, as is permitted under the OATT. Thre...

AI summary The document evaluates three scenarios for self-supply of top-up energy by an LRS under the OATT. All scenarios are deemed impractical, with the third option of importing energy for top-up being unviable in the near term due to increased costs and complexity.

5.5.1 Overview The structure of top-up and spill services is driven largely by the cost allocation process summarised in section 5.2 above. On the basis of that discussion the proposed EBS tariff comprises: - Top-up incremental cost charge...

AI summary The proposed EBS tariff includes top-up incremental cost charges, spill incremental cost credits with annual excess spill discounts, and fixed cost rates for top-up energy allocated, based on the cost allocation process outlined in section 5.2.

5.5.2 Incremental Cost Element of Top-up and Spill Charges The incremental costs of top-up and the avoided costs for spill vary according to the demand-supply balance on the system, and the type of generation that will be capable and most...

AI summary The incremental cost element of top-up and spill charges is discussed in the context of demand-supply balance and generation efficiency. Two modes of variability—load patterns and generation patterns—are considered in the design of the EBS tariff, affecting when top-up and spill occur based on load and generation correlations.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 25 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) systematically when other variable generation production is high and system marginal cost is low. Given the unpredictable nat...

AI summary The document discusses the challenges of incorporating variable generation into rate structures, proposing a mid-point rate with a spread to reflect incremental costs. It suggests avoiding time-based rates due to complexity and instead using a spread between top-up and spill rates to account for variability in generation patterns.

6.1.1 Concepts NS Power has considered two conceptual options for the transmission tariff in the RtR Market Context: - aggregated approach; and - customer-specific approach. These are described below. NS Power has selected the aggregate ap...

AI summary NS Power has evaluated two conceptual options for transmission tariffs in the RtR Market Context: an aggregated approach and a customer-specific approach. NS Power has opted for the aggregated approach, with transmission charges billed to the LRS in both cases.

6.1.2 Aggregated Approach (selected) Under an aggregated approach, each LRS would be a transmission customer subject in general to all provisions and charges in accordance with the OATT. Charges would be determined using a demand

AI summary The aggregated approach requires each Local Resource Supplier (LRS) to be a transmission customer under the Ontario Agreement on Transmission Tariffs (OATT), with charges determined based on demand.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 29 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) determinant that will reflect a virtual delivery point for the aggregated of each LRS's hourly load at customer meters as adj...

AI summary The document discusses the implementation of annually adjusted rates for 2026, including the replacement of Schedule 4 with Schedule 4A for each LRS, and references the application of specific OATT schedules.

6.1.3 Customer-specific Approach (not selected) Under a customer-specific approach, the tariff Network Service terms and conditions would remain broadly applicable, but the service-specific schedules of rates would be replaced by class-spe...

AI summary A customer-specific approach would replace service-specific rate schedules with class-specific ones based on individual metering results. This approach would use the same charge determinants as the new RtR Distribution Access Service rates and include transmission costs plus fixed generation demand amounts under OATT Schedules 2 to 6. Proposed OATT Schedule 4A would be separately billable to the LRS.

6.1.4 Selection Absent a specific need to create a new customer-specific tariff with its associated immediate and ongoing administrative and regulatory burden, NS Power has adopted the aggregated tariff approach. This best leverages the us...

AI summary NS Power has opted for an aggregated tariff approach to avoid creating new customer-specific tariffs, leveraging the existing OATT, ensuring consistency with the Wholesale Market, and reducing administrative burden.

6.2 Treatment of Imbalance, OATT Schedule 4 Under the proposed EBS tariff approach, OATT Schedule 4 will not apply to RtR service. It will be replaced by Schedule 4A which would provide for payments at 10% of marginal cost in respect of ea...

AI summary The proposed EBS tariff approach replaces OATT Schedule 4 with Schedule 4A for RtR service, which provides for payments at 10% of marginal cost for imbalances exceeding 2.0 MWh, excluding curtailment by NS Power. This is discussed in section 5.3.2.

• Embedded Cost Recovery To the extent that an LRS was to be relieved of transmission charges for generation located in the same zone as load, and this loss of NS Power revenue could not be recovered from Bundled Service customers, this wo...

AI summary The text discusses the potential need to add a transmission cost element to the RtR Market Transition Tariff to recover embedded costs from LRS if they are relieved of transmission charges for generation in the same zone as load, which could negate benefits for LRS.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 31 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) For all of these reasons, the OATT charge determinant applicable to each LRS should be derived from the aggregate of all RtR...

AI summary The document discusses the method for determining the OATT charge determinant for LRS, based on the aggregate metered consumption of RtR customers, adjusted for distribution losses, without offsetting generation within the same distribution zone.

7 Tariff Design Specifics: Distribution & Retail Charges The Distribution Access Tariff provides for the recovery of costs classified in the Bundled Service Cost of Service analysis as distribution costs and as retail costs. The Distributi...

AI summary The Distribution Access Tariff is designed to recover distribution and retail costs, using the same charge determinants as the applicable Bundled Service tariff. It incorporates amended NS Power Regulations to account for the RtR market opening.

8.3 Interaction with Other Tariffs and Retailers Regulations In the event that NS Power's recoveries under other proposed tariffs are varied from those proposed, the proposed RTT would need to be revised to reflect any such changes in thos...

AI summary The document discusses the need to revise the proposed Real Time Retail (RtR) tariff if other tariffs are varied, to ensure compliance with the 'no harm' requirements of the Electricity Act. It also mentions the preferred approach using secondary metering for B-t-M settlement and the potential need for a Behind-the-Meter Transition Tariff if this approach is rejected.

Atlantic Provinces / Maritime region (2001 to date) Atlantic Region coordination: reports to the Council of Atlantic Premiers energy committee on the opportunities for greater regional integration and on the lessons to be learned from revi...

AI summary The document outlines coordination efforts in the Atlantic Region for regional energy integration and lessons from electricity governance reviews. It details engagements in New Brunswick and Nova Scotia related to market design, tariff development, and renewable energy trading systems.

Ontario (1999 – date) Member of the IESO (then IMO) Technical Panel, as stakeholder representative for generators from 1999 to 2004, which period encompassed the development of the market rules in preparation for market commencement and th...

AI summary The text outlines involvement in the development of market rules for Ontario's electricity sector, participation in IESO working groups, and consulting on renewable to retail market design for Nova Scotia Power. Key areas include resource adequacy, transmission codes, and tariff hearings.

NON-CONFIDENTIAL Refer to M12551, Exhibit N-1, the Application, page 9 of 45, at lines 26 – 31 and continuing through page 10 of 45, at lines 1 - 22, which states: Following the Board's 2024 AAR Decision, the Company filed (on July 31, 202...

AI summary Following the 2024 AAR Decision, NS Power submitted a TVP Pilot Evaluation Report and reviewed AAR Tariffs for TVP suitability. The Board directed NS Power to develop on-peak and off-peak AARs after the TVP pilot evaluation. A 2025 cybersecurity incident led to a suspension of TVP Tariffs and an extension for the 2024/25 TVP Evaluation Report. NS Power plans to re-initiate stakeholder engagement once systems are restored and evaluations are complete.

Updated RtR Tariffs are needed to Improve Cost Causation REI acknowledges that the AAR process is not necessarily the proper venue for revising tariff structures.[5](#page-3-0) However, NSPI's 2026 AAR filing reveals that the current RtR t...

AI summary REI argues that the current RtR tariffs are misaligned with cost causation principles and require revision to reflect monthly variability of marginal costs, ensure appropriate annual energy cost adjustment methodology, and implement a true-up mechanism to minimize risk and volatility.

lations, the absence of any meaningful historical validation represents a critical evidentiary gap. There is insufficient evidence to conclude that the marginal cost forecasts are reasonably accurate. Additionally, NSPI has explicitly conf...

AI summary The document highlights a critical evidentiary gap in the lack of historical validation for marginal cost forecasts. NSPI argues that base-case assumptions are accurate, but REI challenges this, stating that without sensitivity analysis or historical accuracy, forecasts cannot be relied upon for tariff design.

3. INCORRECT SS TARIFF VALUES AND METHODOLOGY NSPI has applied for approval of a Demand Charge under the SS Tariff of $5.452/kW, representing a variance of $2.055/kW from 2025.[30](#page-8-6) Appendix F3 provides the explanation for this C...

AI summary NSPI has applied for approval of a Demand Charge under the SS Tariff at $5.452/kW, but the calculation is based on incorrect values and a changed methodology involving an additional Interruptible Credit cost. Discrepancies are noted between Appendix F3 and the 2026-2027 GRA Application exhibits.

CONCLUSION REI respectfully requests that the Board direct NSPI to: 1. Recalculate the 2026 AAR rates using the most recently approved COSS methodology rather than the unapproved 2026 COSS, or alternatively, make the 2026 AAR rates interim...

AI summary REI requests the Board to direct NSPI to recalculate 2026 AAR rates using the approved COSS methodology, initiate a tariff amendment proceeding for RtR tariffs, address errors in SS Tariff Demand Charges, and provide forecast versus actual marginal cost data for 2021–2026.

2.0 EVIDENCE OF THE CONSUMER ADVOCATE - The CA offered "limited comments"[4](#page-4-1) on specific modeling and tariff methodology items and - requested the Company "confirm whether any of the Consumer Advocate's understandings or - assum...

AI summary The Consumer Advocate (CA) raised concerns about inconsistencies in NS Power's modeling of power imports, particularly regarding New Brunswick (NB) imports and ML Surplus energy volumes. The CA noted discrepancies between historical averages and model outputs and advised against resetting NB import limits based on lower current volumes. NS Power is expected to respond to these concerns.

026 Page 15 of 22 At page 4 of its Submissions, REI provided "REI acknowledges that the AAR process is not necessarily the proper venue for revising tariff structures."

AI summary REI acknowledges that the AAR process may not be the appropriate venue for revising tariff structures, as noted in its submissions on page 4.

reflect a framework that aligns marginal cost-based energy pricing with embedded-cost recovery safeguards, including the EBS, SS, and RTT Tariffs. Further, the development of, and participation in, the RtR market remains transitional, as e...

AI summary NS Power argues that initiating a new tariff redesign proceeding at this time would be premature due to ongoing developments in the RtR market and the transition of the IESO-NS. They suggest that structural tariff enhancements should be considered after greater operational experience and regulatory certainty are achieved.

NS Power Response: 1. Treatment of Ancillary Service Costs Calculations in Appendix F3 reflect the correct amount of the "Load Following" cost of $21,166 in cell C23. The cost of $21,166 matches the amount displayed in cell E14 in tab "Anc...

AI summary NS Power has identified and corrected an error in the calculation of ancillary service costs in Appendix F3, adjusting the demand charge for firm service. Additionally, NS Power proposes an amendment to the firm service charge to account for interruptible service costs, ensuring fair cost recovery and preventing bundled service customers from subsidizing the RtR market.

7.0 CONCLUSION NS Power respectfully submits that: 1. With the exception of REI's concerns related specifically to the SS Tariff, which the Company addressed in Section 5.0, no party opposed the Company's proposed annually adjusted tariff...

AI summary NS Power concludes its submission by stating that no party opposed the proposed 2026 annually adjusted tariff rates, except for REI's concerns regarding the SS Tariff, which were addressed. The 2026 AARs assume no RtR market activity in 2026, with recovery beginning in 2027. Remaining issues are administrative and do not hinder the approval of the 2026 AARs.

STANDBY SERVICE Standby Service is a supplemental generation capacity service provided to Licensed Retail Suppliers (LRS). The service is provided in combination with Energy Balancing Service under the Energy Balancing Service Tariff. The...

AI summary Standby Service is a supplemental generation capacity service offered to Licensed Retail Suppliers (LRS) in Nova Scotia. It includes capacity adequacy service to meet system adequacy standards and top-up capacity service to support energy delivery through the Energy Balancing Service Tariff.

AVAILABILITY This Standby Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by Renewable to Retail (RtR) Customers. This Standby Service Tariff is provided under the following t...

AI summary The Standby Service Tariff applies to the LRS to enable Renewable to Retail (RtR) Customers to purchase renewable low-impact electricity, subject to the LRS having a valid Participation Agreement with NS Power and providing service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to firm load and requires service under multiple tariffs, including the Open Access Transmission Tariff (OATT) and the Energy Balancing Service Tariff. The service is complementary to generation ancillary services in the Renewable to Retail market and involves load quantities determined at the delivery point.

SPECIAL CONDITIONS - (1) NS Power reserves the right to have a separate service agreement, if in the opinion of NS Power issues not specifically set out herein, must be addressed for the ongoing benefit of NS Power and its customers. - (2)...

AI summary The document outlines special conditions for service agreements under the Standby Service Tariff, emphasizing NS Power's right to establish separate agreements and ensuring that generators and load replacement service customers maintain power supply integrity. It also notes NS Power's right to apply for rate changes to the Nova Scotia Utility and Review Energy Board.

AVAILABILITY This Standby Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by Renewable to Retail (RtR) Customers. This Standby Service Tariff is provided under the following t...

AI summary The Standby Service Tariff applies to Load Replacement Service (LRS) to enable Renewable to Retail (RtR) Customers to purchase renewable low-impact electricity. The tariff is provided under specific terms, including a valid LRS Participation Agreement with NS Power and service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to firm load and requires compliance with multiple other tariffs, including the Open Access Transmission Tariff (OATT) and the Energy Balancing Service Tariff. It also specifies that load quantities are determined at the delivery point, including distribution losses, and that the service is complementary to generation ancillary services under OATT.

DEMAND CHARGE $5.616 per month, per kilowatt (kW) of monthly standby contract demand.

AI summary The document specifies a demand charge of $5.616 per month, per kilowatt (kW) of monthly standby contract demand.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary The Special Conditions outline specific requirements for high-voltage customers, including adjustments for metering locations, mandatory participation in the Open Access Transmission Tariff, and conditions under which service may be denied. The tariff also includes provisions for maintaining power system integrity and determining the Coincident Capacity Factor (CCF) for billing purposes.

Revised AAR Tariffs and Rates The Company has updated the applicable AAR Tariffs and rates to reflect the M12451 COSS changes. The following AAR Tariffs required revision: - One-Part Transmission Real-Time Pricing Tariff (1P T-RTP); - One-...

AI summary Nova Scotia Power has revised several AAR Tariffs to reflect changes from M12451 COSS. Specific tariffs requiring updates include 1P T-RTP, 1P DV-RTP, Shore Power, BUTU, RTR EBS, RTR SS, and RTR RTT. Some tariffs, such as GRLF and Spill, remained unchanged. Supporting data and confidentiality justifications are consistent with the 2026 AAR Application.

Requested Relief The Company respectfully requests Board approval of the revised 2026 AARs, provided as Appendix A, and as listed herein: - One-Time Transmission Real-Time Pricing Tariff; - One-Time Distribution Voltage Real-Time Pricing T...

AI summary Nova Scotia Power is requesting approval for revised 2026 AARs, including several new tariffs. The company will file the 2027 AAR Application by November 6, 2026, including updates on directives from previous proceedings. The approved rates will be implemented as per the Board's decision.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff is available to customers served at transmission voltage of 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, and requires a written request to take service.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary The special conditions outline requirements for providing hourly energy price forecasts and specify metering arrangements. Hourly price forecasts are to be provided to customers regularly, with major changes communicated promptly. The final price for each hour is determined twenty minutes before the hour begins. Metering is typically at the low voltage side of the transformer, but primary metering may be required based on customer needs.

ONE PART TRANSMISSION REAL TIME PRICING TARIFF Page 2 of 3 will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering. - (3) The cost of any special...

AI summary The One-Part Transmission Real-Time Pricing Tariff outlines requirements for customers, including capital contributions for metering, transformer loss adjustments, service terms, and power factor maintenance. It also addresses eligibility and conditions for transitioning between service types.

2026 AAR Compliance Filing Appendix A Page 4 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 1 of 3

AI summary The document outlines a section of the 2026 AAR Compliance Filing, specifically Appendix A, Page 4 of 25, which has been redacted due to the inclusion of confidential information. The text references a 'One Part Distribution Voltage Real Time Pricing Tariff' on Page 1 of 3.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at voltage less than 69 kV and have loads of 2,000 KVA or 1,800 kW, and over.

AI summary The tariff is available to customers with loads below certain thresholds and served at voltages less than 69 kV, requiring a written request to take service under this tariff.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary The special conditions outline requirements for providing hourly energy price forecasts and specify metering arrangements. Hourly price forecasts are to be provided to customers regularly, with major changes communicated promptly. The final price for each hour is determined twenty minutes before the hour begins. Metering is typically at the low voltage side of the transformer, but primary metering may be required based on customer needs.

2026 AAR Compliance Filing Appendix A Page 5 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 2 of 3 will be required to make a capital contribution equal to the additional capit...

AI summary The document outlines the terms and conditions of the One-Part Distribution Voltage Real-Time Pricing Tariff, including capital contributions for metering, transformer loss adjustments, service duration, and power factor requirements. It also specifies eligibility and transition rules for customers moving from the Interruptible Rider of the Large Industrial Tariff.

AVAILABILITY - (1) This tariff is available to port authorities of Nova Scotia for the sole purpose of providing port electricity to cruise ships docked in ports to meet their own consumption needs in displacement of the on-board self-gene...

AI summary This tariff is available to Nova Scotia port authorities for providing electricity to cruise ships, with specific demand thresholds and supply interruption requirements. It is seasonal, available from April 1 to November 30, and outlines the order in which rate classes will be called upon during supply shortfalls.

ENERGY CHARGE Energy charges will vary by voltage level of the point of delivery and will be made up of two components. - (1) Annually adjusted fuel cost component which shall be the Company's forecast average annual marginal energy cost a...

AI summary Energy charges in Nova Scotia vary by voltage level and consist of two components, including an annually adjusted fuel cost component based on the company's forecast average annual marginal energy cost, approved for use with the GR&LF tariff and adjusted for line losses.

SUPPLY INTERRUPTIONS This is an interruptible service. Before connecting the ship to the shore supply the port authority will request permission from NSPI indicating the expected load and duration for which the power is needed. The custome...

AI summary This section outlines the conditions for interruptible service under the tariff, requiring customers to provide notice, reduce load promptly upon request, and comply with restoration procedures. Non-compliance may result in penalty charges.

SPECIAL CONDITIONS - (1) The Port Authority owns and is responsible for the maintenance and operation of all electrical equipment required for the supply of port electricity to docked ships other than the meters and metering transformers s...

AI summary This section outlines special conditions related to the provision of port electricity by NSPI to the Port Authority. It specifies responsibilities for equipment maintenance, operational requirements, metering arrangements, and power factor maintenance.

AVAILABILITY The tariff is available to wholesale customers as defined in section 2(d) of the Electricity Act , Chapter 25 of the Acts of 2004. (d) "wholesale customer" means Nova Scotia Power Incorporated or a municipal utility.

AI summary The tariff is available to wholesale customers, defined under section 2(d) of the Electricity Act as Nova Scotia Power Incorporated or a municipal utility.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 3 of 6 The tariff is applicable to the scheduled backup/top-up load of participating customers under the following terms and conditions: - (1) The wholesale customer has provided written n...

AI summary The document outlines the terms and conditions for the Wholesale Market Backup/Top-Up Service Tariff, including requirements for customer applications, service duration, and metering equipment installation. Applications must be submitted annually by specific deadlines, and service is renewable on a minimum 12-month basis or three-year forward basis under certain conditions.

2026 AAR Compliance Filing Appendix A Page 17 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ENERGY BALANCING SERVICE TARIFF Page 1 of 3 Renewable to Retail

AI summary The document outlines the 'Energy Balancing Service Tariff' under the 'Renewable to Retail' section, which is part of the 2026 AAR Compliance Filing. This section discusses energy balancing services related to renewable energy integration into the retail market.

AVAILABILITY This Energy Balancing Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by RtR Customers. This Energy Balancing Service Tariff is provided under the following terms...

AI summary The Energy Balancing Service Tariff is applicable to the LRS to facilitate the purchase of renewable low-impact electricity by RtR Customers, subject to the LRS having a valid LRS Participation Agreement with NS Power and providing service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Energy Balancing Service Tariff requires LRS to take service under multiple tariffs, including OATT, Standby Service, and Renewable to Retail Market Transition. The service is based on metered energy and is independent of forecasts. Hourly top-up and spill quantities are calculated based on distribution and transmission losses and renewable electricity supply.

ENERGY BALANCING SERVICE TARIFF Page 2 of 3 Renewable to Retail generation adjusted by the deduction of transmission locational losses, as applicable to the geographic zone in which the generating facility is interconnected, over its aggre...

AI summary The Energy Balancing Service Tariff outlines the conditions for renewable energy generation to be adjusted for transmission and distribution losses, and sets requirements for LRS to manage energy imbalances. NS Power must approve spill capacity limits and may impose production limits if mitigation proposals are unsatisfactory.

2026 AAR Compliance Filing Appendix A Page 19 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ENERGY BALANCING SERVICE TARIFF Page 3 of 3 Renewable to Retail

AI summary The document discusses the 'Renewable to Retail' component of the Energy Balancing Service Tariff, focusing on how renewable energy is integrated into the retail energy market. This section is part of a larger compliance filing related to Annually Adjusted Rates in 2026.

AVAILABILITY This Standby Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by Renewable to Retail (RtR) Customers. This Standby Service Tariff is provided under the following t...

AI summary The Standby Service Tariff applies to Load Serving Retailers (LRS) to enable Renewable to Retail (RtR) Customers to purchase renewable low-impact electricity. The LRS must have a valid Participation Agreement with Nova Scotia Power and must be serving RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to firm load and requires LRS to take service under multiple tariffs, including OATT. The service is complementary to generation ancillary services under OATT, and load quantities are determined at the delivery point, including distribution losses.

2026 AAR Compliance Filing Appendix A Page 24 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Page 1 of 2 Renewable to Retail

AI summary The document discusses the 'Renewable to Retail' component of the Renewables to Retail Market Transition Tariff, indicating a focus on transitioning renewable energy resources into the retail market.

APPLICABILITY - (1) The RTT is applicable to the LRS, and is in addition to (and not in substitution of) any charges owing by the LRS to NS Power under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, or the Energy B...

AI summary The RTT applies to LRS and is in addition to charges under other tariffs. It includes energy and demand charges with annual adjustments based on forecasted avoided costs and system fuel costs. Savings credits are also applied annually for NS Power's forecasted savings from LRS's electricity supply.

2026 AAR Compliance Filing Appendix H Page 1 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART TRANSMISSION REAL TIME PRICING TARIFF Page 1 of 3

AI summary The document is a redacted page from a 2026 AAR Compliance Filing Appendix H, related to the One Part Transmission Real Time Pricing Tariff. It indicates that the content is confidential and has been redacted.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff is available to customers served at transmission voltage of 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, and requires a written request to take service.

ONE PART TRANSMISSION REAL TIME PRICING TARIFF Page 2 of 3 - will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering. - (3) The cost of any speci...

AI summary The document outlines the terms and conditions for the One Part Transmission Real Time Pricing Tariff, including capital contributions for metering, transformer loss adjustments, service duration, and power factor requirements. It also discusses eligibility for firm service and conditions for returning to interruptible service.

2026 AAR Compliance Filing Appendix H Page 4 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 1 of 3

AI summary This document outlines a one-part distribution voltage real-time pricing tariff, which is part of a compliance filing for 2026. The content is redacted, indicating that confidential information has been removed.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at voltage less than 69 kV and have loads of 2,000 KVA or 1,800 kW, and over.

AI summary The tariff is available to customers with loads below certain thresholds and served at voltages less than 69 kV, requiring a written request to take service under this tariff.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary The special conditions outline requirements for providing hourly energy price forecasts and specify metering arrangements. Hourly price forecasts are to be provided to customers regularly, with major changes communicated promptly. The final price for each hour is determined twenty minutes before the hour begins. Metering is typically at the low voltage side of the transformer, but primary metering may be required based on customer needs.

ONE PART DISTRIBUTION VOLTAGE REAL TIME PRICING TARIFF Page 2 of 3 - will be required to make a capital contribution equal to the additional capital cost of primary metering as opposed to the cost of secondary metering. - (3) The cost of a...

AI summary The document outlines the terms and conditions for the One Part Distribution Voltage Real Time Pricing Tariff, including capital contributions for metering, transformer loss adjustments, service duration, and power factor requirements. It also details provisions for transitioning between service types and penalties for non-compliance with power factor standards.

AVAILABILITY - (1) This tariff is available to port authorities of Nova Scotia for the sole purpose of providing port electricity to cruise ships docked in ports to meet their own consumption needs in displacement of the on-board self-gene...

AI summary This tariff is available to Nova Scotia port authorities for providing electricity to cruise ships, with specific demand thresholds and supply interruption requirements. It is seasonal, available from April 1 to November 30, and outlines the order in which rate classes will be called upon during supply shortfalls.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 2 of 6 (b) For dispatchable generation, GC = the supplier's maximum capacity contracted to provide its wholesale customers' demand. CD is the customer's Contract Demand CCF is the capacity...

AI summary The text defines terms related to the Wholesale Market Backup/Top-Up Service Tariff, including GC, CD, and CCF, which are used to determine capacity contributions and customer demand in the context of dispatchable generation.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 3 of 6 The tariff is applicable to the scheduled backup/top-up load of participating customers under the following terms and conditions: - (1) The wholesale customer has provided written n...

AI summary The Wholesale Market Backup/Top-Up Service Tariff outlines the terms and conditions for participation, including requirements for written notice, contract demand, and metering equipment. Applications must be submitted annually to NSPI by specific deadlines, with decisions communicated within defined timeframes.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary This section outlines special conditions for a high-voltage transmission tariff, including requirements for meter readings, mandatory use of the Open Access Transmission Tariff (OATT), service denial criteria, service agreements, load integrity, and conditions for attributing capacity credit factor (CCF) values based on resource availability.

2026 AAR Compliance Filing Appendix H Page 16 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 6 of 6 - - (d) The capacity derived based on the CCF is procured and available to the wholes...

AI summary This section of the Wholesale Market Backup/Top-Up Service Tariff outlines the requirements for capacity procurement based on the Capacity Credit Factor (CCF) and the financial obligations of wholesale customers in the event of a failure to deliver energy or capacity. It also describes the process for adjusting the CCF if discrepancies arise.

2026 AAR Compliance Filing Appendix H Page 17 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ENERGY BALANCING SERVICE TARIFF Page 1 of 3 Renewable to Retail

AI summary This document outlines the Energy Balancing Service Tariff under the Renewable to Retail program, indicating its role in managing energy supply and demand within the Nova Scotia power system.

AVAILABILITY This Energy Balancing Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by RtR Customers. This Energy Balancing Service Tariff is provided under the following terms...

AI summary The Energy Balancing Service Tariff is applicable to the LRS to facilitate the purchase of renewable low-impact electricity by RtR Customers, subject to the LRS having a valid LRS Participation Agreement with NS Power and providing service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary This section outlines the applicability of the Energy Balancing Service Tariff, requiring LRS to take service under multiple tariffs including OATT, Standby Service Tariff, and Renewable to Retail Market Transition Tariff. It specifies that service under this tariff is based on metered energy quantities and clarifies the applicability of certain OATT schedules.

ENERGY BALANCING SERVICE TARIFF Page 2 of 3 Renewable to Retail generation adjusted by the deduction of transmission locational losses, as applicable to the geographic zone in which the generating facility is interconnected, over its aggre...

AI summary The Energy Balancing Service Tariff outlines requirements for renewable energy generation to align with customer load, considering transmission and distribution losses. It specifies that the Load Serving Resource (LRS) must conform to regulations and that maximum spill capacity must be approved by NS Power to ensure compliance with annual energy contracts.

2026 AAR Compliance Filing Appendix H Page 19 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) ENERGY BALANCING SERVICE TARIFF Page 3 of 3 Renewable to Retail

AI summary The document discusses the 'Renewable to Retail' component of the Energy Balancing Service Tariff, highlighting its role in the context of the 2026 AAR Compliance Filing. The page is part of a larger appendix and contains redacted confidential information.

2026 AAR Compliance Filing Appendix H Page 20 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) STANDBY SERVICE TARIFF Page 1 of 4 Renewable to Retail

AI summary This document is part of a compliance filing related to the 2026 AAR and includes a section on the Standby Service Tariff. The content is partially redacted, and key details are omitted due to confidentiality.

AVAILABILITY This Standby Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by Renewable to Retail (RtR) Customers. This Standby Service Tariff is provided under the following t...

AI summary The Standby Service Tariff applies to Load Serving Retailers (LRS) to enable Renewable to Retail (RtR) Customers to purchase renewable low-impact electricity. The LRS must have a valid Participation Agreement with Nova Scotia Power and must be serving RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to firm load and requires LRS to take service under multiple tariffs, including OATT. Service is complementary to generation ancillary services under OATT, and load quantities are determined at the delivery point with distribution losses considered.

Where: - o "k" is the number of otherwise applicable bundled service rate classes to RtR customers of an LRS. - o "CMPFDi" is hourly kW Class Monthly Peak Firm Demand of the LRS firm load in each tariff class at the time of system coincide...

AI summary The text defines key terms used in the regulatory proceeding, including 'k', 'CMPFDi', and 'CMDAFi', which are related to bundled service rate classes, peak firm demand, and demand adjustment factors for load serving resources.

2026 AAR Compliance Filing Appendix H Page 24 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Page 1 of 2 Renewable to Retail

AI summary The document discusses the 'Renewable to Retail' component of the Renewable to Retail Market Transition Tariff, which outlines the process for transitioning renewable energy resources to the retail market. This section is part of a compliance filing related to the 2026 AAR (Annual Accounting Report) and includes redacted confidential information.

APPLICABILITY - (1) The RTT is applicable to the LRS, and is in addition to (and not in substitution of) any charges owing by the LRS to NS Power under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, or the Energy B...

AI summary The RTT applies to the LRS in addition to other tariffs, with adjustments for energy and demand charges based on forecasted savings and avoided costs. Credits and adjustments are calculated annually and applied prospectively. The LRS must also take service under the OATT and other related tariffs.

2026 AAR Compliance Filing Appendix H Page 25 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Page 2 of 2 Renewable to Retail

AI summary This document outlines the 'Renewable to Retail' section of the RENEWABLE TO RETAIL MARKET TRANSITION TARIFF, which appears to address the transition of renewable energy resources into the retail market. However, the content is redacted and does not provide specific details.

The Demand Charge is made up of two components: Demand Charge Components dollars per kW Demand Charge from Standby Service Tariff $5.4525.601 Annually Adjusted Demand Savings Credit $0.000 Total $5.4525.601 The Demand Charge is applicable...

AI summary The Demand Charge consists of two components: the Demand Charge from Standby Service Tariff and the Annually Adjusted Demand Savings Credit. The charge is calculated based on the difference between Winter Peak Firm Demand and Monthly Standby Contract Demand, as outlined in the Standby Service Tariff.

ervice by the time the 2027 AAR application is filed, NS Power is directed to provide scenarios for the total amount of energy not realized for periods ranging between one month and 10 months in 2027. The NSUARB directed NS Power to provid...

AI summary NS Power is directed to provide energy not realized scenarios for 2027 and to compare forecasted New Brunswick imports with actual imports from 2021 to 2026. The Board also directed NS Power to update RTP tariffs, with fixed cost adders requiring annual updates and energy charges based on real-time marginal costs.

Renewall Energy Inc. REI's submission was concentrated on the use of the proposed Cost of Service Study methodology, the RtR tariff review and design, RTRSS tariff calculation and the forecasted marginal cost used in the application. Notab...

AI summary Renewall Energy Inc. (REI) raised concerns about the proposed Cost of Service Study methodology, RtR tariff design, and RTRSS tariff calculations, requesting recalculations and a Board order to revise tariffs by March 31, 2026. NS Power responded by suggesting that changes to tariffs may be premature due to ongoing regulatory proceedings and proposed a draft Terms of Reference for an interruptible service pilot with REI.

Conclusion The Board approves the AARs as filed, subject to retaining jurisdiction to make amendments if adjustments are required to them as a result of the GRA decision. The Board approves the ELIADC tariff, on an interim basis effective...

AI summary The Board approves the AARs with an interim effective date and final effective date of April 1, 2026, and issues several directives to NS Power, including revising sensitivity analyses, providing data on inflation adjustments, and initiating stakeholder engagement on tariff amendments.

SERVICE DEFINITION Service under this tariff consists in delivery of supplemental power to partial requirement customers who operate their own dispatchable generation equipment, as approved to be connected to the grid by the Company. The S...

AI summary The Service under this tariff provides supplemental power to customers with dispatchable generation equipment. It includes Generation Replacement, Optional Load Following, and Spill Services, each defined based on specific operational conditions. Customers receiving this service are termed 'customergenerators,' and supplementary power is billed under full requirement tariffs.

GENERATION LOAD FOLLOWING CRITERIA Effective: April 1, 2026 - (1) Two months preceding each tariff year the customer-generator, in conjunction with the Company, shall establish the aggregate net operating capability of its generation equip...

AI summary This document outlines the Generation Load Following Criteria effective April 1, 2026. It specifies that customer-generators must establish their net operating capability with NS Power for billing purposes and that the Company must seek approval from the Nova Scotia Energy Board for its forecasted incremental generation costs, which will influence the load following rate for the next tariff year.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The ELIADC tariff is available to customers with transmission voltage of 69 kV or higher and loads of 2,000 KVA or 1,800 kW and over. Customers must submit a written request to take service under this tariff.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary The special conditions outline requirements for energy pricing forecasts, metering arrangements, service terms, and power factor maintenance under a specific tariff. Customers must provide capital contributions for primary metering, maintain a minimum service term, and adhere to power factor standards to avoid adjustments.

ENERGY CHARGE Energy charges will vary by voltage level of the point of delivery and will be made up of two components. - (1) Annually adjusted fuel cost component which shall be the Company's forecast average annual marginal energy cost a...

AI summary The energy charge consists of two components, with the first being an annually adjusted fuel cost component based on the Company's forecast average annual marginal energy cost, approved for use with the GR&LF tariff and adjusted for line losses at the voltage level of the point of delivery.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary This section outlines special conditions for a high-voltage transmission tariff, including adjustments for metering locations, requirements for transmission service, service denial criteria, load management obligations, and conditions for billing demand calculations involving third-party generation resources.

AVAILABILITY This tariff is available for use by, independent non-dispatchable electric generators serving the Wholesale Market. The tariff is applicable to scheduled "spill energy," under the following terms and conditions: - (1) "Spill e...

AI summary The tariff applies to independent non-dispatchable electric generators in the Wholesale Market, specifically for scheduled 'spill energy.' Spill energy is defined as energy produced above the scheduled hourly energy requirement of wholesale customers. Suppliers must install approved metering equipment, and spill capacity must be approved by NSPI.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary This section outlines the applicability of the Energy Balancing Service Tariff, including required additional services, determination of top-up and spill quantities, qualification requirements, and spill capacity approval by NS Power.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to Load Serving Retailers (LRS) who must also take service under the Open Access Transmission Tariff (OATT), Energy Balancing Service Tariff, and Renewable to Retail Market Transition Tariff. The service is complementary to generation ancillary services under OATT and applies only to firm load.

RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Renewable to Retail

AI summary The document introduces the 'Renewable to Retail' initiative, which aims to facilitate the transition of renewable energy from generation to retail markets. This section provides an overview of the initiative without delving into specific details.

APPLICABILITY - (1) The RTT is applicable to the LRS, and is in addition to (and not in substitution of) any charges owing by the LRS to NS Power under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, or the Energy B...

AI summary The RTT applies to LRS and is in addition to charges under the OATT, Standby Service Tariff, and Energy Balancing Service Tariff. Energy and Demand Charges under the RTT include provisions for mitigation credits and annual adjustments based on forecasted avoided costs and system fuel costs.

ACTIVE DEMAND CONTROL AND SCHEDULE VARIANCE NS Power shall be entitled to actively manage PHP's load in accordance with the terms and conditions set out in the Active Demand Control – Energy Supply Protocol attached as Schedule 1 to this T...

AI summary NS Power is allowed to manage PHP's load under the Active Demand Control protocol. NS Power must report system savings and schedule variances annually to the Board, including load shifting benefits and improvements. PHP receives a 25% credit based on cost differentials. The report is due within 60 days of the tariff year's end, as outlined in the Board's decision M12184.

TERM The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approval of a subsequent term for this Tariff, including the appro...

AI summary The third term of the Tariff is set for 2026, subject to potential revision by a decision from the NSEB. NS Power or PHP may seek approval from the Board for a subsequent term, including pricing elements or PHP's transition to an alternative tariff.

Effective: April 1, 2026 Metering will normally be at the low voltage side of the transformer and, for measurement and, where applicable, billing purposes, meter readings will be increased by 1.1%. Should the Mill's requirements make it ne...

AI summary The document outlines metering requirements under the tariff, specifying that metering is typically at the low voltage side of the transformer. If primary metering is required, PHP must cover the additional costs as a capital contribution. Any special metering or communication systems required by PHP must also be funded by PHP.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff is available to customers served at 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, who must make a written request to take service under this tariff.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - O By midnight each business day, hourly price forecasts for each...

AI summary The document outlines special conditions for a tariff, including hourly energy price forecasts, metering requirements, capital contributions for primary metering, transformer loss adjustments, service terms, and power factor requirements. These conditions apply to customers taking service under this tariff.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at voltage less than 69 kV and have loads of 2,000 KVA or 1,800 kW, and over.

AI summary This section outlines the availability of the tariff, requiring customers to make a written request and specifying eligibility based on voltage and load capacity.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - O By midnight each business day, hourly price forecasts for each...

AI summary The document outlines special conditions for a tariff, including hourly energy price projections, metering requirements, capital contributions for primary metering, transformer loss adjustments, service duration, and power factor requirements. These conditions apply to customers taking service under the tariff and include provisions for termination, service renewal, and adjustments based on power factor.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF

AI summary The document introduces the Wholesale Market Backup/Top-Up Service Tariff, which outlines the rates and terms for backup and top-up services in the wholesale electricity market. It includes a visual element, likely a chart or graphic, for reference.

ENERGY BALANCING SERVICE The Energy Balancing Service is a supplemental generation service provided to Licenced Retail Suppliers (LRS) in respect of the Licenced Retail Supplier's Renewable to Retail (RtR) Customers utilizing the productio...

AI summary The Energy Balancing Service is a supplemental generation service provided to Licensed Retail Suppliers (LRS) for their Renewable to Retail (RtR) Customers. It ensures service reliability by delivering complementary energy and receiving surplus generation, and must be used with Standby Service under the Standby Service Tariff.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff(OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff....

AI summary This section outlines the applicability of the Energy Balancing Service Tariff, requiring LRS to take service under multiple tariffs, defining how top-up and spill quantities are calculated, and setting requirements for compliance and spill capacity approval by NS Power.

Where: - o "k" is the number of otherwise applicable bundled service rate classes to RtR customers of an LRS. - o "CMPFDi" is hourly kW Class Monthly Peak Firm Demand of the LRS firm load in each tariff class at the time of system coincide...

AI summary The text defines key terms related to bundled service rate classes and demand metrics for LRS customers. It outlines how CMPFDi and CMDAFi are calculated, with specific attention to unmetered customer classes and the use of research-based load profile data.

RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Renewable to Retail

AI summary The document introduces the Renewable to Retail Market Transition Tariff, outlining the transition process from renewable energy sources to the retail market. It provides context for the tariff and references key entities and acronyms involved in the process.

Request IR-3: Refer to M12551, Exhibit N-1, the Application, page 9 of 45, at lines 26 – 31 and continuing through page 10 of 45, at lines 1 - 22, which states: Following the Board's 2024 AAR Decision, the Company filed (on July 31, 2024)...

AI summary Following the Board's 2024 AAR Decision, NS Power filed and received acceptance of the Year Three (2023/24) TVP Pilot Evaluation Report. The Board directed NS Power to develop on-peak and off-peak AARs after the TVP pilot evaluation is complete. A cybersecurity incident in April 2025 led to an extension for filing the 2024/25 TVP Evaluation Report and a temporary suspension of TVP Tariffs. NS Power plans to re-initiate stakeholder engagement once systems are restored and evaluations are complete.

n addition to the BUTU and Spill Tariffs, has NS Power used this 3.25 percent escalation factor in any other application for approval of revised tariff rates for 2026 or in the proposed GRA in M12451? Refer to M12551, Exhibit N-1, the Appl...

AI summary The text inquires whether NS Power applied a 3.25 percent escalation factor in any other applications for revised tariff rates in 2026 or in the proposed GRA in M12451, referencing a specific increase in the Spill Tariff and an appendix for supporting calculations.

ffering a TVP structure for AARs? Refer to M12551, Exhibit N-1, the Application, Section 7.0 Renewable to Retail Market (RtR) Tariffs and the proposed RtR Tariff Administration Charge , which states: The Company has calculated the RtR Tari...

AI summary The document discusses NS Power's proposed RtR Tariff Administration Charge and associated costs, including deferred costs and future recovery plans. It also references standby service tariff charges for 2025 and 2026 and asks about estimated costs, interest rates, and supporting documentation.

- 30 (d) If a true-up mechanism were implemented to reconcile forecast versus 31 actual marginal costs, please explain how this would affect: 1 2 (i) the risks or benefits to NS Power identified in part (a) above; 3 (ii) the need for or be...

AI summary The document outlines requests related to implementing a true-up mechanism to reconcile forecast versus actual marginal costs, including its impact on risks and benefits to NS Power, the need for frequent updates, and forecast risk allocation. It also requests updated financial data and information on planned filings for a capital work order.

16 Reference: Energy Balancing Service Tariff, pages 31-32 and Appendix F2. - 17 (a) Please compare the forecasted export sales for 2025 and 2026 and provide 18 an explanation. - 19 (b) Please explain how the transmission loss factor is ca...

AI summary The document requests explanations and comparisons related to the Energy Balancing Service Tariff, including forecasted export sales, transmission loss factor calculation, and percentage changes in EBS components compared to 2025 rates.

7 Request IR-15: - 8 Reference: Appendix F3, page 137 Standby Demand Charge Calculation. - 9 (a) Please explain in detail the source and derivation of the Interruptible 10 Service Credit, including the methodology, assumptions, and calcula...

AI summary Request IR-15 asks for detailed information on the Interruptible Service Credit, including its source, derivation, methodology, and assumptions, as well as its relation to the Pilot Interruptible Service in the RtR market and the Board order or tariff provision authorizing it.

34 class, load profile, and timing of transition. - 1 (b) What specific assumptions were made regarding firm capacity 2 contributions from third-party generators serving the RtR market, including 3 the MW amount of firm capacity, the relia...

AI summary The text presents a series of questions related to assumptions about firm capacity from third-party generators in the RtR market, the need for a Market Design White Paper, and the conditions under which savings credits would have value. These questions are part of a regulatory proceeding.

re implemented to reconcile forecast versus actual marginal costs, please explain how this would affect: 1. the risks or benefits to NS Power identified in part (a) above; 2. the need for or benefit of more frequent marginal cost updates;...

AI summary The text requests an explanation of how reconciling forecast versus actual marginal costs would affect NS Power's risks and benefits, the need for frequent updates, and risk allocation. It also asks for steps to implement an annual true-up mechanism and compares it to the ELIADC calculation. References to cost estimates and capital work orders are included.

a capital work order CI C0053699 identified as a subsequent submittal in the 2023 ACE Plan. In what quarter does NS Power plan to file this Capital Work Order? Reference: Appendix F2, F3 and F4. 1. For each cross-referenced document from t...

AI summary The text references a capital work order (CI C0053699) related to the 2023 ACE Plan and requests information about NS Power's filing timeline, exhibit numbers, document access, and explanations for forecasted export sales, transmission loss factors, and tariff changes. It also asks for detailed analysis of percentage changes in EBS and Standby Service Tariff components compared to 2025 rates.

rates. Where the change is greater than 10% for a particular component, please provide a detailed explanation of the driver(s), including the relative contribution of each driver to the total change. Reference: Appendix F3, page 137 Standb...

AI summary The document requests detailed explanations regarding the Interruptible Service Credit and its inclusion in the 2026 Standby Demand Charge calculation. It also highlights the need for closer scrutiny of the Annual Energy Cost Adjustment due to the increasing influence of environmental costs and regulations on marginal costs.

1. Please confirm that NS Power considered REI’s forecasted market uptake in its load forecast and calculation of average and marginal costs for 2026. If not, please explain why REI's forecast was not considered and what load migration ass...

AI summary The text outlines a series of questions directed at NS Power regarding its load forecasting, cost calculations, and tariff provisions related to the RTT Annual Energy Cost Adjustment. It asks whether REI's forecast was considered, how load migration impacts cost calculations, and whether credits are provided under certain conditions.

capacity in the event the RtR customer returns to NS Power’s service. The Company does not project savings in this cost category and proposes that the current value of zero remain in effect in 2026. 1. Please confirm the assumptions in 202...

AI summary The text requests clarification on assumptions related to load transitioning from NS Power’s service to RtR, firm capacity contributions, and the purpose of certain tariff components. It also asks for a Market Design White Paper and a revised figure showing percentage changes in RTT components compared to 2025 rates.

MEU Information Requests to NS Power 1 2 IR-1 3 4 Reference: Application, page 23, footnote 27. "As of the time of this application, the portion of 5 MEUs' demand and energy to be served under the Municipal Tariff in 2026 has not been fina...

AI summary The MEUs are seeking information from NS Power regarding the forecast billing demand and energy requirements for 2026 under different billing arrangements (reciprocal and non-reciprocal) for BUTU service, as well as the forecast amount of overall Spill Tariff energy in each scenario.

n application of a CD of 22.4 MWs. Please refer to IG IR-1 (NSUARB M11989) for explanation of how CDs are determined based on MEUs’ choice of billing arrangements under the BUTU Tariff.)” Question: 1. If the MEUs’ choose BUTU service under...

AI summary The text presents two questions regarding the billing arrangements and energy forecasts under the BUTU Tariff and Municipal Tariff for four MEUs in 2026, contingent on different contract demand levels. The first question involves a reciprocal billing arrangement with a 7.5 MW CD, while the second involves a non-reciprocal arrangement with a 22.4 MW CD. Both scenarios require forecasts of billing demand, energy requirements, and Spill Tariff energy.

that provide the most benefits and why, ways to improve the tariff or tariff administration, and a comparison of current year outcomes to prior years to help to evaluate ELIADC performance over time." On October 31, 2025, NS Power filed it...

AI summary NS Power filed its Compliance Filing on October 31, 2025, which was approved by the Board on December 10, 2025. The approved Tariff includes a provision requiring information on the CBL Energy Charge and VCC for 2026 to be provided to the Board by November 7, 2025.

tory Boards Act , S.N.S. 2024, c. 2, Sch. A, the Nova Scotia Utility and Review Board (NSUARB) was succeeded by the Nova Scotia Energy Board (Board) for all applications related to electric utilities. NS Power filed its 2026 AAR applicatio...

AI summary NS Power submitted its 2026 AAR application with proposed updates to tariff methodologies and rates. The application includes changes to transmission rate structures and fixed cost adders for specific tariffs. The NSUARB was replaced by the Board, and NS Power faced delays due to a cyber attack affecting the TVP pilot evaluation. The Board directs NS Power to provide an update in its 2027 AAR.

mate is $5.616 per kW. NS Power requested that the revised RTRSS tariff and BUTU in Attachments 5 and 7 replace those proposed in the application. The Board accepts NS Power's evidence on this point. In its Reply, NS Power explained the ch...

AI summary NS Power requested revisions to the RTRSS tariff and BUTU, which the Board accepted. The Board acknowledged the change in the RTRSS tariff calculation due to the COSS but emphasized the need for transparency in future applications. NS Power argued against providing historical forecast data, a position the Board agreed with, stating such analysis is better suited for a review of AAR tariff structures. The Board approved the AARs effective April 1, 2026, with adjustments to be made following the COSS outcome.

Conclusion The Board approves the AARs as filed, subject to retaining jurisdiction to make amendments if adjustments are required to them as a result of the GRA decision. The Board approves the ELIADC tariff, on an interim basis effective...

AI summary The Board approves the AARs with conditions, including interim approval of the ELIADC tariff. It issues several directives to NS Power, including revising sensitivity analyses, providing data on administration charges, and initiating stakeholder engagement. The final approval of AAR rates is pending the outcome of the COSS review.

2. NS Power is directed as follows: - 1. If the updated Cost of Service Study is not approved as filed, currently before the Board in the NS Power GRA matter M12451, NS Power is directed to make any required adjustments to the 2026 AARs in...

AI summary The Board has directed NS Power to make various adjustments to its AARs, including updates on wind resource deployment, sensitivity analysis of the Maritime Link, and stakeholder engagement on tariff amendments. NS Power must also submit data on administration charge inflation adjustments and file the 2027 AAR application by a specific deadline.

SERVICE DEFINITION Service under this tariff consists in delivery of supplemental power to partial requirement customers who operate their own dispatchable generation equipment, as approved to be connected to the grid by the Company. The S...

AI summary The service definition outlines three components: Generation Replacement Service, Optional Load Following Service, and Spill Service. It specifies how power is delivered to partial requirement customers with their own generation equipment. Customers taking this service are referred to as 'customergenerators.'

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff outlined in the document is available to customers served at transmission voltage of 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, and requires a written request to take service.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - o By midnight each business day, hourly price forecasts for each...

AI summary This section outlines special conditions for a tariff, including hourly energy price forecasts, metering requirements, transformer loss adjustments, service duration, and power factor maintenance. Customers may be required to make capital contributions for primary metering and must maintain a minimum power factor to avoid adjustments.

ENERGY CHARGE Energy charges will vary by voltage level of the point of delivery and will be made up of two components. - (1) Annually adjusted fuel cost component which shall be the Company's forecast average annual marginal energy cost a...

AI summary The energy charge consists of two components, with the first being an annually adjusted fuel cost component based on the Company's forecast average annual marginal energy cost, approved for use with the GR&LF tariff and adjusted for line losses at the voltage level of the point of delivery.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 1 of 6 CUSTOMER CHARGE The monthly customer charge under this tariff is calculated according to the following formula: Monthly customer charge = forecast annual administration costs foreca...

AI summary The monthly customer charge under the Wholesale Market Backup/Top-Up Service Tariff is calculated using forecasted annual administration costs and the number of subscribed customers, resulting in a fixed charge of $414.63 per month.

SPECIAL CONDITIONS - (1) This tariff is designed for customers supplied and metered at the high side of the transformer at transmission voltage of 69 kV or higher. For customers metered at the low side of the transformer, or at a distribut...

AI summary This section outlines special conditions for a high-voltage transmission tariff, including adjustments for metering locations, mandatory use of the Open Access Transmission Tariff, service denial criteria, service agreements, load integrity requirements, and conditions for attributing capacity credit factors (CCF) to wholesale customers.

ENERGY BALANCING SERVICE The Energy Balancing Service is a supplemental generation service provided to Licenced Retail Suppliers (LRS) in respect of the Licenced Retail Supplier's Renewable to Retail (RtR) Customers utilizing the productio...

AI summary The Energy Balancing Service provides supplemental generation to Licensed Retail Suppliers (LRS) for their Renewable to Retail (RtR) Customers, ensuring service reliability equivalent to Bundled Service. It involves delivering complementary energy and receiving surplus generation, and must be used with Standby Service under the Standby Service Tariff.

AVAILABILITY This Energy Balancing Service Tariff is applicable to the LRS in order to facilitate the purchase of renewable low-impact electricity by RtR Customers. This Energy Balancing Service Tariff is provided under the following terms...

AI summary The Energy Balancing Service Tariff applies to the LRS to enable the purchase of renewable low-impact electricity by RtR Customers, subject to a valid LRS Participation Agreement with NS Power and the provision of service to RtR Customers.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Energy Balancing Service Tariff requires LRS to take service under multiple tariffs, including OATT, and outlines how hourly top-up and spill quantities are calculated based on load and generation adjustments. NS Power must approve maximum spill capacity, and compliance with the Board Electricity Retailers Regulations is required.

APPLICABILITY - (1) An LRS taking service under this Standby Service Tariff shall also take service under the Open Access Transmission Tariff (OATT), the Energy Balancing Service Tariff, and the Renewable to Retail Market Transition Tariff...

AI summary The Standby Service Tariff applies to Load Replacement Services (LRS) taking service under this tariff, requiring them to also take service under the Open Access Transmission Tariff (OATT), Energy Balancing Service Tariff, and Renewable to Retail Market Transition Tariff. The service is applicable only to firm load and is determined at the delivery point from the transmission system.

RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Renewable to Retail

AI summary The document introduces the 'Renewable to Retail' initiative, focusing on transitioning renewable energy resources into the retail market. This section outlines the context and objectives of the initiative, highlighting its significance in the energy sector.

APPLICABILITY - (1) The RTT is applicable to the LRS, and is in addition to (and not in substitution of) any charges owing by the LRS to NS Power under the Open Access Transmission Tariff (OATT), the Standby Service Tariff, or the Energy B...

AI summary The RTT applies to the LRS in addition to other tariffs, with energy and demand charges adjusted annually based on forecasted savings and cost differences. The LRS must also take service under the OATT and other tariffs.

The Demand Charge is made up of two components: Demand Charge Components dollars per kW Demand Charge from Standby Service Tariff $5.452 Annually Adjusted Demand Savings Credit $0.000 Total $5.452 The Demand Charge is applicable to the LRS...

AI summary The Demand Charge consists of two components: the Demand Charge from Standby Service Tariff and the Annually Adjusted Demand Savings Credit. The charge applies to the LRS' monthly displaced demand on NS Power's system, calculated as the difference between Winter Peak Firm Demand and Monthly Standby Contract Demand under the Standby Service Tariff.

TERM The third term of this Tariff is 2026, unless revised per a Decision of the NSEB (Term). Prior to the end of the third term, NS Power or PHP may apply to the Board for approval of a subsequent term for this Tariff, including the appro...

AI summary The third term of the Tariff is set for 2026, subject to revision by the NSEB. NS Power or PHP may request approval for a subsequent term, including pricing elements or a transition to an alternative tariff.

May 5, 2026 [[email protected]](mailto:[email protected]) Jennifer Power Senior Regulatory Counsel Nova Scotia Power Inc. PO Box 910 1223 Lower Water Street Halifax, NS B3J 3S8 Dear Ms. Power: M12551 – 2026 Annually Adjuste...

AI summary NS Power has initiated stakeholder engagement to comply with the Board's directive on the 2026 Annually Adjusted Rates (AARs) matter M12551. This includes addressing issues raised by Renewall Energy Inc., such as cost allocation, monthly marginal cost pricing, and a true-up mechanism. The Board has acknowledged progress and expects an update by June 15, 2026.

May 13, 2026 Crystal Henwood Clerk of the Board Nova Scotia Energy Board 1601 Lower Water Street, 3rd Floor Halifax, NS B3J 3S3 Re: M12551 – 2026 Annually Adjusted Rates (AARs) – Reply to Board Letter on AAR Compliance Filing Dear Ms. Henw...

AI summary NS Power filed its 2026 AAR compliance filing on May 11, 2026, following the NSEB's approval of the 2026 AARs. The Board requested clarification on the demand charge in the RTT tariff, which NS Power confirmed will be consistent with the SS and BUTU tariffs going forward. The correct demand charge of $5.601 per kW was included in the AAR Compliance Filing.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at transmission voltage of 69 kV or higher and have loads of 2,000 KVA or 1,800 kW, and...

AI summary The tariff is available to customers served at transmission voltage of 69 kV or higher with loads of 2,000 KVA or 1,800 kW and over, requiring a written request to take service under this tariff.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - O By midnight each business day, hourly price forecasts for each...

AI summary The document outlines special conditions for a tariff, including hourly energy price projections, metering requirements, capital contributions for primary metering, transformer loss adjustments, service duration, firm service eligibility, and power factor requirements.

AVAILABILITY - (1) Customers must make a written request to take service under this tariff. - (2) This tariff is available to customers who are served at voltage less than 69 kV and have loads of 2,000 KVA or 1,800 kW, and over.

AI summary The tariff is available to customers with loads under specific voltage and power thresholds, requiring a written request to take service.

SPECIAL CONDITIONS - (1) Projections of the anticipated hourly energy price (week ahead and day ahead) will be provided to the customer according to the following schedule: - O By midnight each business day, hourly price forecasts for each...

AI summary The document outlines special conditions for a tariff, including hourly energy price projections, metering requirements, capital contributions, service terms, and power factor adjustments. Customers must meet specific conditions, such as maintaining a minimum power factor and making capital contributions for primary metering.

ENERGY CHARGE Energy charges will vary by voltage level of the point of delivery and will be made up of two components. - (1) Annually adjusted fuel cost component which shall be the Company's forecast average annual marginal energy cost a...

AI summary The energy charge is composed of two components, with the first being an annually adjusted fuel cost component based on the Company's forecast average annual marginal energy cost, approved for use with the GR&LF tariff and adjusted for line losses at the voltage level of the point of delivery.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF

AI summary The document introduces the Wholesale Market Backup/Top-Up Service Tariff, which outlines the rates and terms for backup and top-up services in the wholesale market. It includes a reference to a visual element, likely a chart or table, for further details.

ENERGY BALANCING SERVICE The Energy Balancing Service is a supplemental generation service provided to Licenced Retail Suppliers (LRS) in respect of the Licenced Retail Supplier's Renewable to Retail (RtR) Customers utilizing the productio...

AI summary The Energy Balancing Service is a supplemental generation service provided to Licensed Retail Suppliers (LRS) for their Renewable to Retail (RtR) Customers. It ensures service reliability by delivering complementary energy and receiving surplus generation, and must be used with Standby Service under the Standby Service Tariff.

APPLICABILITY - (1) An LRS taking service under this Energy Balancing Service Tariff shall also take service under the Open Access Transmission Tariff(OATT), the Standby Service Tariff, and the Renewable to Retail Market Transition Tariff....

AI summary The Energy Balancing Service Tariff requires LRS to take service under the OATT, Standby Service Tariff, and Renewable to Retail Market Transition Tariff. It outlines how hourly top-up and spill quantities are determined based on load and generation adjustments, and requires NS Power approval for maximum spill capacity.

Where: - o "k" is the number of otherwise applicable bundled service rate classes to RtR customers of an LRS. - o "CMPFDi" is hourly kW Class Monthly Peak Firm Demand of the LRS firm load in each tariff class at the time of system coincide...

AI summary The text defines technical terms related to rate classes and demand calculations for LRS customers, including CMPFDi and CMDAFi, which are used in determining peak firm demand and adjustment factors for different customer classes.

RENEWABLE TO RETAIL MARKET TRANSITION TARIFF Renewable to Retail

AI summary The document introduces the Renewable to Retail Market Transition Tariff, a mechanism aimed at facilitating the transition of renewable energy into the retail market. It outlines the structure and purpose of the tariff in the context of Nova Scotia's energy regulatory framework.

The Demand Charge is made up oftwo components: Demand Charge Components dollars per kW Tariff Demand Charge from Standby Service $5,601 Annually Adjusted Demand Savings Credit $0,000 Total $5,601 The Demand Charge is applicable to the LRS'...

AI summary The Demand Charge consists of two components: the Tariff Demand Charge from Standby Service and an Annually Adjusted Demand Savings Credit. The charge applies to the LRS' monthly displaced demand on NS Power's system, calculated as the difference between Winter Peak Firm Demand and Monthly Standby Contract Demand, as outlined in the Standby Service Tariff.

ANTICIPATED COMMENCEMENT OF RETAIL OPERATIONS REI anticipates commencing retail operations as approved under its license, before December 31, 2026. While REI will require the updates to the RtR tariff framework to be in place before it beg...

AI summary REI plans to start retail operations by December 31, 2026, pending updates to the RtR tariff framework. REI expects these updates, including those for distributed generation and net billing, to be implemented before entering the market in Q4 2026. REI is willing to engage with NS Power and the Board on these matters.

M12551 - 2026 Annually Adjusted Rates – Stakeholder Engagement Update The Board has reviewed correspondence from counsel for Renewall Energy inc. (REI) dated July 6, 2026. This letter responded to the Board's request for comments concernin...

AI summary The Board has received a response from Renewall Energy inc. (REI) regarding NS Power's stakeholder engagement on the implementation of monthly marginal cost pricing and a potential true-up mechanism for Renewable to Retail (RtR) tariffs. The Board directed NS Power to initiate stakeholder engagement by April 30, 2026, and noted that REI may apply for relief if a timeline for an application cannot be agreed upon.

advisable. At this stage, these comments are simply raised for guidance. If a determination on this point becomes necessary, it would be a matter for a future proceeding. [2026 NSEB 13, at para.106] As the Board has indicated, and as both...

AI summary The Board encourages NS Power and REI to agree on a framework and timing for any proposed RTR tariff amendments, ideally by August 31, 2026. If they cannot agree, REI should file an application by that date or as soon as possible. The Board emphasizes the importance of timely filing to ensure final amended RtR tariffs are in place by the end of 2026.

August 31, 2026 Crystal Henwood Clerk of the Board Nova Scotia Energy Board 1601 Lower Water Street, 3rd Floor Halifax, NS B3J 3S3 Re: M12551 – 2026 Annually Adjusted Rates – Stakeholder Engagement Update (RtR Tariffs) Dear Ms. Henwood: No...

AI summary NS Power responded to the Board's July 15, 2026 letter regarding the 2026 Annually Adjusted Rates (AAR) and Renewable to Retail (RtR) tariff amendments. NS Power provided additional marginal cost data and explained its position that introducing time-variable pricing (TVP) for AARs is premature due to limited data availability. A review of RtR market elements is planned for 2028.

(b) Large Industrial Interruptible Service Enablement in the RtR Market The Company has been working with REI to advance the development of the RtR tariff and process provisions required to extend interruptible service to large industrial...

AI summary Nova Scotia Power and Renewall Energy Inc. are collaborating to develop the RtR tariff and process provisions to extend interruptible service to large industrial customers in the RtR market. They propose addressing LIIR-related tariff revisions within the ongoing M13008 proceeding to ensure regulatory efficiency and avoid redundant reviews.

(c) RtR Market Element Updates Application (M12339/M13008) On July 31, 2026, NS Power filed its RtR Market Element Updates Application (M13008), in accordance with the Board's November 19, 2025 directive in M12339.[1](#page-2-0) That appli...

AI summary NS Power filed an application (M13008) on July 31, 2026, proposing revisions to several tariffs and the establishment of a new DAS Tariff, in accordance with a prior directive (M12339). The application was developed with REI and Power Advisory LLC, and no changes were proposed for certain other regulations. The DAS Tariff administration fee will be determined in the 2027 AAR Application.