Topic:"Energy Efficiency Budgets" in M12551

Application for Annually Adjusted Rates for 2026 Redacted 1 2.0 MARGINAL COST ANALYSIS 2 3 The average annual marginal cost forecast for 2026 used in determination of the GRLF, SP, Spill, 4 EBS, and RTT is $67.36/MWh. This represents appro...

AI summary The document discusses the 2026 annually adjusted rates application, highlighting a 24% decrease in the average annual marginal cost forecast from 2025 to 2026, attributed to factors like the sulphur dioxide Certificate of Variance and lower solid fuel pricing.

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.

GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 3 of 5 Company will exercise the automated control of the customer's load to interrupt the customer load. - (4) Following interruption, service may only be restored by the customer with...

AI summary The Generation Replacement and Load Following Tariff outlines procedures for load interruption, penalties for non-compliance, and requirements for metering equipment. The Performance Penalty formula is based on residual demand and average demand during the interruption event, with penalties capped at twice the firm billing cost for the period.

A list of updates for the 2025 Q3 fuel and purchased power model include: Update Update Description number 1. Generation maintenance scheduled (GMS). 2. Fuel and power prices. 3. Coal blends, restrictions, emissions parameters, and volumes...

AI summary The document outlines updates for the 2025 Q3 fuel and purchased power model, including generation maintenance, fuel prices, coal blends, emission limits, and energy schedules. It also notes the removal of a confidential appendix related to 2026 annually adjusted rates.

ENERGY CHARGE NSPI's actual hourly marginal energy costs, plus the following fixed cost adders for on-peak and offpeak usage: On-peak (7:00 am – 11:00 pm, non-holiday weekdays): 10.008 ¢/kWh Off-peak (11:00 pm – 7:00am, non-holiday weekday...

AI summary NSPI's energy charge includes on-peak and off-peak fixed cost adders, with weekend and holiday rates set at the off-peak price. These adders are determined annually and submitted for approval to the Nova Scotia Energy Board. A credit is also applied for customer-owned transformers based on peak demand.

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.

REDACTED 2026 AAR Application Appendix B2 Page 6 of 19 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Approved Year 2025 Proposed Year 2026 KWh Sales EHV HV 3PH Total 100,830,197 93,147,343 325,602,942 519,580,483 117,601,539 95,213,023 309,4...

AI summary The document presents a comparison of electricity sales, line losses, sales split by time-of-use, and customer counts between the approved year 2025 and the proposed year 2026. Key metrics include significant increases in KWh sales, changes in line losses, and shifts in customer distribution across different classes.

2026 AAR Application Appendix C2 Page 1 of 1 REDACTED (CONFIDENTIAL INFORMATION REMOVED) SHORE POWER CALCULATION 2026 MWh Requirement Unit Revenue Unit Production Total non-demand Cost at Total at Generator's related fixed cost Generator's...

AI summary This table outlines the shore power calculation for 2026, including MWh requirements, unit fuel costs, and revenue by voltage class. It details line losses, generation, transmission, and distribution costs, as well as unit fixed costs and rates. A footnote directs readers to the 'Usage Statistics' tab in Appendix D for further information on energy requirements.

FOR THE YEAR ENDING DECEMBER 31, 2026 CLASS : TOTAL COMPANY RATE BASE Variable Fixed COSTS (Source Exh 6) Unit Cost Fuel Operating Capital Return Total Total Cost Units Sold Demand Energy Customer Generation Usage (Energy) $1,537,126 $741,...

AI summary The document presents a detailed cost breakdown for the year ending December 31, 2026, including generation, transmission, distribution, and retail costs. It outlines various cost components such as fuel, operating, capital, return, and total costs, along with unit costs and energy sales data.

SALES, GENERATION AND DEMAND ANALYSIS FOR THE YEAR ENDING DECEMBER 31, 2026 ( 1) DOMESTIC ( 2) SMALL GENERAL ( 3) GENERAL ( 4) GENERAL LARGE (1) MWH SALES 5,286,337,241 376,992,742 2,308,034,614 363,766,784 (2) ENERGY LINE 8.2% 8.2% 7.9% 5...

AI summary The document provides a detailed analysis of sales, generation, and demand for the year ending December 31, 2026, including metrics such as energy sales, losses, system demand, and contribution percentages across different customer classes.

Monthly Fuel Cost Allocation Jan-26 Feb-26 Mar-26 Apr-26 May-26 Jun-26 Jul-26 Aug-26 Sep-26 Oct-26 Nov-26 Dec-26 Total IPP $1,089,522 $1,308,985 $1,789,401 $1,774,269 $1,644,728 $1,527,824 $1,253,560 $1,142,692 $1,514,565 $1,430,960 $1,813...

AI summary The document presents a detailed breakdown of monthly fuel cost allocations for various energy sources and entities, including IPP and Comfit, across different time periods from January 2026 to December 2026. The data includes total costs for different categories such as Wind NRIS and Wind ERIS, highlighting significant variations in expenses over time.

Annual Peak of ATL 2,356,954 Annual Energy Requirement of ATL 11,303,785,142 System Coincident Load Factor 54.748044% Steam Plant $ 847,049 $ 847,049 $ - $ - $ (463,743) $ 463,743 $ - $ 383,306 $ 463,743 $ - Hydro Plant $ 699,665 $ 699,665...

AI summary The document provides data on the annual peak and energy requirement of ATL, along with financial figures related to various generation plants such as Steam, Hydro, Wind, and Gas Turbine, as well as Batteries and Transmission. It includes costs, adjustments, and total generation plant values.

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 and load balancing, including locational loss adjustments, compliance with regulations, and spill capacity approvals by NS Power. The LRS must ensure renewable generation aligns with consumption over a compliance period.

ENERGY CREDIT 6.736 cents per kilowatt-hour. The Energy Credit for spill service is set annually and is applicable to spilled energy in each hour.

AI summary The Energy Credit for spill service is set at 6.736 cents per kilowatt-hour and is applied annually to spilled energy in each hour.

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.

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.

2026 Energy Balancing Service Annual Avoided Fuel Cost Calculations Source Annual MWh Load at Transmission Level Generation non-fuel related costs Avoided Unit Cost (c/kWh) Before Fixed Cost Deferral Adj. Fixed Cost Deferral Adj. if applic...

AI summary The document outlines the 2026 Energy Balancing Service, focusing on annual avoided fuel cost calculations and the top-up energy rate calculation. It includes detailed cost breakdowns and energy-related fixed cost components, referencing exhibits and data from COSS (Cost of Service Study).

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 1 of 8 The Extra Large Industrial Active Demand Control Tariff (ELIADC) provides a mechanism whereby Port Hawkesbury Paper LP (PHP, the Mill, the Customer) pays the forecast incremen...

AI summary The ELIADC tariff allows Port Hawkesbury Paper LP to pay forecast incremental costs and contribute to utility costs, while granting Nova Scotia Power control over the customer's load to reduce system costs and improve reliability for all customers.

Customer Baseline Energy Charge, Customer Baseline Energy Cost, and Contribution to Utility Costs In advance of each tariff year, PHP shall advise NS Power of its forecast annual and monthly energy requirements for the subsequent calendar...

AI summary PHP is required to provide NS Power with its forecasted energy requirements, and NS Power calculates a Customer Baseline Load (CBL) Cost, which includes incremental non-capital costs. The CBL Adder (CBLA) is calculated based on the CBL Cost and is used to determine the ELIADC Energy Charge. The CBLA increases as the CBL Cost decreases, with specific formulas outlined for different CBL Cost ranges.

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. • When the forecast CBL Cost is at or over $61.75/MWh, the FCR to b...

AI summary The ELIADC Tariff outlines how the Energy Load Incentive and Demand Control Tariff energy charge is calculated, including the Fixed Cost Recovery (FCR) transfer from the Customer Baseline (CBL) Cost to the CBL Adder (CBLA), and the addition of a Variable Capital Charge (VCC) to determine the final energy charge per MWh.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 1 of 8 The Extra Large Industrial Active Demand Control Tariff (ELIADC) provides a mechanism whereby Port Hawkesbury Paper LP (PHP, the Mill, the Customer) pays the forecast incremen...

AI summary The ELIADC tariff allows Port Hawkesbury Paper LP to pay forecasted incremental costs and contribute to utility costs while granting NS Power control over the customer's load to reduce system costs and improve reliability for all customers.

Customer Baseline Energy Charge, Customer Baseline Energy Cost, and Contribution to Utility Costs In advance of each tariff year, PHP shall advise NS Power of its forecast annual and monthly energy requirements for the subsequent calendar...

AI summary PHP is required to provide NS Power with its forecast energy requirements and maintenance schedules to calculate the Customer Baseline Load (CBL) Cost, which includes fuel, purchased power, line losses, and variable operating costs. The CBL Adder (CBLA) is calculated based on the CBL Cost and includes the Fixed Cost Recovery (FCR) when the CBL Cost is below a certain threshold.

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. When the forecast CBL Cost is at or over $61.75/MWh, the FCR to be...

AI summary The ELIADC tariff structure includes a CBL Energy Charge, CBLA, and VCC. When the forecast CBL Cost is over $61.75/MWh, the FCR transferred is capped at $3.75/MWh, and the CBLA is set to $5/MWh. These charges are submitted annually for Board approval as part of NS Power's rate adjustments.

ELIADC ENERGY CHARGE Information on the CBL Energy Charge and VCC for 2026 will be provided to the Board by November 7, 2025.The ELIADC Energy Charge is $75.87 per Megawatt- hour

AI summary The ELIADC Energy Charge is set at $75.87 per Megawatt-hour for 2026. Information on the CBL Energy Charge and VCC will be submitted to the Board by November 7, 2025.

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.

ENERGY CREDIT 8.9196.736 cents per kilowatt-hour. The Energy Credit for spill service is set annually and is applicable to spilled energy in each hour.

AI summary The Energy Credit for spill service is set annually and applies to spilled energy in each hour, with a rate of 8.9196.736 cents per kilowatt-hour.

ENERGY CREDIT The Energy Credit is equal to the average incremental cost of generation as defined under Optional Generation Load Following.

AI summary The Energy Credit is defined as the average incremental cost of generation under the Optional Generation Load Following framework, which is a key consideration in the regulatory process for energy pricing and cost allocation.

GENERATION REPLACEMENT AND LOAD FOLLOWING TARIFF Page 2 of 5 This tariff is available to: - (a) Customers who have their own qualifying generating facility of not less than 2,000 kW of aggregate capacity, as defined under Special Condition...

AI summary This tariff outlines the Generation Replacement and Load Following Service available to customers with qualifying generating facilities or those supplying energy to Non-Utility Owned Generation sites. It details how energy will be supplied, pricing mechanisms, and customer responsibilities in cases of supply interruptions, including the requirement for customers to reduce load promptly when notified.

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.

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 and is in addition to charges under other tariffs. It includes energy and demand charges with provisions for savings credits and annual adjustments based on forecasted costs. The LRS must also take service under the OATT and other tariffs.

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 The document outlines special conditions for electricity supply to ships at the port, including responsibilities for equipment maintenance, metering arrangements, and power factor requirements. The Port Authority and NSPI have defined roles, and customers may be required to contribute to capital costs for special metering.

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. It includes capacity adequacy service and top-up capacity service, both related to meeting energy balancing obligations and system adequacy standards.

NON-CONFIDENTIAL 1 (iii) The assertion is that fewer new renewable resources may have been selected in the 2 hypothetical load case; however, these are not dispatchable units, with their energy 3 being integrated on the system when availab...

AI summary The text discusses the impact of load decrement methodology on renewable resource selection and generation cost distribution, highlighting concerns about GHG OBPS costs and challenges in reconfiguring the generation mix with non-dispatchable renewables. It also notes the complexity of modeling decremental costs with increasing renewable penetration.

REDACTED 1 Request IR-7: 2 3 Re: Application, p.14 and Confidential Appendix A7, identifying factors that cause actual 4 import volumes to vary from forecast. 5 6 (a) Please provide a list of the factors, including but not limited to those...

AI summary The text outlines a request (IR-7) for NS Power to identify factors causing discrepancies between forecasted and actual import volumes during 2021-2025, and to explain if these factors will affect 2026 imports from the NB/ISONE market. It also requests information on how forecasts were developed and whether historical averages are sufficient to account for changes.

18 (b) The Company has not performed this analysis. Until such time as the Board renders a 19 Decision on an application for an ATL tariff applicable to PHP, uncertainty regarding the 20 final form of the tariff and PHP's participation rem...

AI summary The Company has not performed a specific analysis regarding the ATL tariff for PHP, creating uncertainty until the Board makes a decision. There is also a note about an overestimated Energy Sales forecast in NS Power's Q3 2025 Load forecast, which slightly affects the marginal cost forecast.

Customer Baseline Energy Charge, Customer Baseline Energy Cost, and Contribution to Utility Costs In advance of each tariff year, PHP shall advise NS Power of its forecast annual and monthly energy requirements for the subsequent calendar...

AI summary The document outlines the process by which NS Power calculates the Customer Baseline Load (CBL) Cost and Energy Charge for PHP, including how the CBL Adder (CBLA) is determined based on forecast CBL Cost. The CBL Energy Charge forms the basis of the ELIADC Energy Charge and includes costs such as fuel, purchased power, line losses, and variable operating costs.

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 as the sum of the CBL Energy Charge, CBLA, and VCC. When the forecast CBL Cost is at or over $61.75/MWh, the FCR transferred is $3.75/MWh, with the difference assigned a value of zero. The CBL Energy Charge and CBLA are submitted annually for Board approval as part of NS Power's Annually Adjusted Rates.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 8 of 8 Under normal operating conditions, an average power factor over the entire billing period, calculated for kWh consumed and lagging kVAR-h, as recorded, of not less than 90% la...

AI summary The document outlines a requirement for maintaining a power factor of at least 90% lagging for the total Mill load under the Extra Large Industrial Active Demand Control Tariff. If this requirement is not met, adjustment factors will be applied to the CBL Energy Charge.

Date Filed: December 19, 2025 Sensitivity - Sensitivity 4: No New Wind System Marginal Cost ($/M Wh) 2026 Peak Off-peak All periods Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year 70.77 18

AI summary The text presents a table under Sensitivity 4: No New Wind, showing system marginal costs for different periods in 2026, with an annual average of 70.77 \/MWh. The table is incomplete, with only the year row filled in.

10 2025 2026 Variance Var (%) MWh Energy Requirement at Generator 10,100,338 11,303,785 1,203,448 11.9 Transmission Line Losses (%) 3.0 2.4 -6.0 -20.0 MWh Load at Transmission Level 9,806,153 11,038,853 1,232,700 12.6 Total Fuel Cost of FA...

AI summary The table presents energy and cost data for 2025 and 2026, showing an increase in MWh energy requirements, a decrease in transmission line losses, and rising fuel costs. These figures highlight changes in energy demand, efficiency, and expenses over the two-year period.

5 (d) Confirmed, OBPS is included in the PLEXOS costs used for calculating hourly marginal 6 costs. All variable operating costs for the marginal unit are included in the output marginal 7 cost.

AI summary The OBPS is incorporated into the PLEXOS costs for calculating hourly marginal costs, including all variable operating costs for the marginal unit in the output marginal cost calculation.

Annually Adjusted Rates for 2026 (M12551) NSPI Responses to REI Information Requests 1 Request IR-2: 2 3 Preamble: Based on the principles of economic dispatch, and recognizing the influence of 4 environmental legislation, REI expects that...

AI summary The document outlines NSPI's response to REI's information request regarding the identification of the highest variable cost generators in Nova Scotia's electricity system, including diesel combustion turbines, natural gas generation from Tufts Cove, and imports, as well as the accuracy of marginal cost forecasting using the PLEXOS model.

6 (f) Muskrat Falls, Labrador Island Link, and Maritime Link have been operating reliably in 7 steady state for some time. NS Power believes that the probability of Maritime Link energy 8 import deviation from forecast is now similar to th...

AI summary NS Power discusses the reliability of energy imports from Muskrat Falls, Labrador Island Link, and Maritime Link, noting that deviations are now comparable to New Brunswick. They use a combination of forecasts and historical data for surplus energy predictions. Increased fleet flexibility from SO2 CoV reduces the cost impact of deviations, allowing reliance on coal-based generation instead of higher-cost imports. PHP load exclusion is noted in marginal cost forecasts.

Annually Adjusted Rates for 2026 (M12551) NSPI Responses to REI Information Requests 1 Request IR-18: 2 3 Reference: Annually Adjusted Energy Savings Credit, page 35, lines 12-17. 4 5 The Annually Adjusted Energy Savings Credit is designed...

AI summary The document discusses the Annually Adjusted Energy Savings Credit and the Annually Adjusted Demand Savings Credit, both of which are designed to pass non-fuel cost savings to Licensed Retail Suppliers (LRS) when customers leave NS Power's bundled service for the Renewable to Retail (RtR) market. The company does not expect savings in these categories and proposes keeping their values at zero for 2026.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 17 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - Energy Balancing Service, comprising: - o Top-up service; - o Spill, including at a discounted rate for the annual excess o...

AI summary The document outlines the Energy Balancing Service, including top-up and spill services, and the RtR Market Transition Tariff for embedded cost recovery. NS Power will bill LRS for these services monthly after implementing remote polled interval metering for all RtR customers.

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.

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.

Annually Adjusted Rates for 2026 REI IR-18 Attachment 1 Page 32 of 41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - The foregone amounts under the energy-based charge for fixed generation costs under the Bundled Service tariffs, less that...

AI summary The text discusses the calculation of stranded amounts related to energy-based charges and fuel cost recovery, focusing on the impact of load supplied by LRS and the nature of generation resources. It also explains how differences in fuel costs between bundled service tariffs and RtR supply affect the RTT energy charge.

11 Variance Energy Charge by Components (cents per kWh) 2025 2026 Amount Percent Fixed Cost Adder from Energy Balancing Service Tariff 3.264 2.166 (1.099) (33.7) Annually Adjusted Energy Savings Credit 0.000 0.000 0.000 Annual Energy Cost...

AI summary The document presents a table showing variations in energy and demand charges between 2025 and 2026, highlighting changes in fixed cost adders, energy savings credits, and demand charges. These figures indicate significant fluctuations in costs, particularly in the Annual Energy Cost Adjustment and Demand Charge from Standby Service Tariff.

NON-CONFIDENTIAL 1 Request IR-6: 2 3 Refer to M12551, Exhibit N-1, the Application, Section 7.3.1.2 Annually Adjusted Energy 4 Savings Credit, page 35 of 45, at lines 10-18, which states: 5 6 7.3.1.2 Annually Adjusted Energy Savings Credit...

AI summary The document discusses NS Power's rationale for not projecting savings in the Annually Adjusted Energy Savings Credit category for 2026. It explains that NS Power must maintain firm capacity to serve all customers, even if some load departs to the RtR market, and that wind generation is intermittent, requiring top-up services.

4. IMPROVED MINIMUM REPORTING FOR AAR APPLICATIONS The ability to review NSPI's forecasting accuracy year over year is essential to promote transparency, accountability and improve forecasting. 4138-8807-8436 [ 31 ](#page-9-1) See : N-1(i)...

AI summary The document discusses the need for improved minimum reporting in Annually Adjusted Rates (AAR) applications, emphasizing the importance of transparency and accuracy in NSPI's forecasting. REI requests that NSPI report on forecasted versus actual monthly and hourly marginal costs and provide explanations for variances. NSPI currently tracks hourly marginal units by generator but lacks detailed fuel-type data due to a cybersecurity incident.

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.

6.0 EVIDENCE OF PORT HAWKESBURY PAPER LP PHP's evidence and submissions indicated "support of the proposed 2026 ELIADC Energy Charge - of $75.87/MWh as filed, with a requested effective date of January 1, 2026."[29](#page-19-1) PHP also pr...

AI summary Port Hawkesbury Paper LP (PHP) supports the proposed 2026 ELIADC Energy Charge of $75.87/MWh with an effective date of January 1, 2026, and provided general responses to comments on the interim approval of this charge.

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.

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.

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.

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.

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 governed by LRS Terms and Conditions.

The Energy Charge is made up of the following components: Energy Charge Components cents per kWh Fixed Cost Adder from Energy Balancing Service Tariff 2.155 Annually Adjusted Energy Savings Credit 0.000 Annual Energy Cost Adjustment 2.171...

AI summary The Energy Charge comprises several components, including a Fixed Cost Adder from the Energy Balancing Service Tariff, an Annually Adjusted Energy Savings Credit, and an Annual Energy Cost Adjustment, totaling 4.326 cents per kWh. It applies to the Load Serving Retailer's monthly displaced energy on NS Power's generation system, calculated as the total monthly load minus the top-up quantity under the Energy Balancing Service Tariff.

Summarized Rate base from Schedule 2a in 2026 COSS INITIAL CLASSIFICATION AS PER 2026 GRA Application Filing OM&G - Other CTs 2,999 2,999 - 0% - DSM Amortization - - - 0% - FCR Deferral - - - 0% - Reg. Affairs -Advocay Expenses 1,364 617 7...

AI summary The document presents a summarized rate base from Schedule 2a in the 2026 COSS, detailing various classifications such as OM&G, DSM amortization, FCR deferral, and expenses related to generation, transmission, and distribution. It includes figures for different asset categories, depreciation, and revenue components.

(2) Removed Exports as this is a variable cost (3) This investment, deemed as made for environmental reasons, was identified as energy-related under the previous COS methodology. EXHIBIT 9A

AI summary The document removes exports as a variable cost and references an investment made for environmental reasons, identified as energy-related under the previous COS methodology. Exhibit 9A is included but no further details are provided.

FOR THE YEAR ENDING DECEMBER 31, 2026 (1) MWH (2) ENERGY LINE (3) ENERGY (4) CLASS NON- (5) SYSTEM (6) SYSTEM COINCIDENT COINCIDENT COINCIDENT (7) LINE (8) DEMAND SYSTEM (9) SYSTEM COIN. PEAK COINCIDENT (10) 3CP (11) 3CP SALES LOSSES REQUI...

AI summary The document presents a detailed breakdown of energy sales, losses, and demand factors across various customer classes for the year ending December 31, 2026. It includes data on energy losses, system requirements, and demand factors for different sectors such as domestic, small general, general, large general, small industrial, medium industrial, large industrial, municipal, and unmetered.

Annual Peak of ATL 2,356,954 Annual Energy Requirement of ATL 11,303,785,142 O- 4 0-! 4 1 1 F4 Category Plant Fuel Costs Jan-26 $67,441,935 Feb-26 $54,358,722 Mar-26 $49,574,650 Apr-26 $30,087,598 May-26 $22,231,785 Jun-26 $23,382,648 Jul-...

AI summary The text presents financial data related to plant fuel costs, Maritime Link surpluses, and non-wind purchases for a given period. It includes monthly figures and annual totals for these categories, indicating the financial operations and energy procurement activities of the entity.

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.

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 governed by LRS Terms and Conditions.

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 directs NS Power to adjust AARs if the Cost of Service Study is not approved, update the 2027 AAR with information on wind resources and Maritime Link sensitivity, compare forecasted and actual New Brunswick imports, and engage stakeholders on tariff amendments by April 30, 2026. The 2027 AAR must be filed by November 6, 2026.

ENERGY CREDIT The Energy Credit is equal to the average incremental cost of generation as defined under Optional Generation Load Following.

AI summary The Energy Credit is defined as the average incremental cost of generation under the Optional Generation Load Following framework. This definition is illustrated in an accompanying image.

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.

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 The Port Authority and NSPI have defined roles and responsibilities regarding electrical equipment, metering, and operational procedures for port electricity supply. Special conditions include metering responsibilities, staff availability, scheduling, metering costs, transformer losses, and power factor requirements.

ENERGY CREDIT 6.736 cents per kilowatt-hour. The Energy Credit for spill service is set annually and is applicable to spilled energy in each hour.

AI summary The Energy Credit for spill service is set at 6.736 cents per kilowatt-hour and is applied annually to spilled energy in each hour.

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. It includes capacity adequacy and top-up capacity services, both tied to the Energy Balancing Service Tariff. The service ensures LRS meet adequacy standards during generation outages and supports energy delivery during imbalances.

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.

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 comprises fixed cost adders, energy savings credits, and annual adjustments, totaling 4.363 cents per kWh. It applies to the Load Serving Retailer's monthly displaced energy on NS Power's generation system, calculated after accounting for distribution losses and top-up quantities.

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 the special conditions for port electricity supply, including ownership responsibilities, operational requirements, metering arrangements, and power factor maintenance. The Port Authority and NSPI have defined roles, and customers are required to cover additional costs for specialized metering and communication systems.

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 Load Serving Retailers (LRS) in addition to other tariffs. It includes energy and demand charges with adjustments based on forecasted savings and avoided costs. The LRS must also take service under the OATT and other tariffs. The RTT includes annual adjustments and credits based on forecasted performance.

The Energy Charge is made up ofthe following components: Energy Charge Components cents per kWh Adder Tariff Fixed Cost from Energy Balancing Service 2.155 Annually Adjusted Energy Savings Credit 0.000 Annual Energy Cost Adjustment 2.171 T...

AI summary The Energy Charge comprises several components, including an Adder Tariff, Annually Adjusted Energy Savings Credit, and Annual Energy Cost Adjustment, totaling 4.326 cents per kWh. It applies to the LRS' monthly displaced energy on NS Power's generation system, calculated as the total monthly LRS load, including distribution losses, minus the total monthly LRS top-up quantity.

2 Reference: Assumptions, page 11, Appendix A3 PCON; and Board-Directed Sensitivity 3 Analyses, pages 12-13 and Appendix A6 PCON. - 4 (a) NS Power has stated that higher SO2 emission limits have resulted in lower 5 marginal costs. Please c...

AI summary The document contains a series of questions directed to NS Power regarding SO2 emissions, marginal cost impacts, surplus energy delivery, and sensitivity analyses related to commodity price volatility, wind generation delays, and tariff assumptions. The questions seek clarification on assumptions, risk factors, and forecasting methodologies used in cost modeling.

- 31 (d) If NS Power believes a cap exists: 1 (i) Please identify the specific tariff provision, Board order, or 2 Board approval that establishes such cap, and provide the 3 history of how this cap was determined; 4 (ii) Quantify the maxi...

AI summary The text outlines a request for NS Power to identify any cap on payments to RtR customers and explain its calculation. It also discusses the Annually Adjusted Energy Savings Credit and Demand Savings Credit, noting that NS Power does not project savings in these categories and proposes maintaining a zero value in 2026.

l and Purchased Power Model.17 17 - 2025 PLEXOS AAR F&PP model is based on the 2024 Q3 forecast F&PP model, with updated system assumptions, including commodity pricing update as of 2024-08-16. 1. In stating the above, is NS Power saying i...

AI summary The text discusses the 2025 PLEXOS AAR F&PP model used by NS Power, with assumptions based on August 2024 data. It raises questions about model accuracy, data timeliness, and the identification of highest variable cost generators. The preamble also references economic dispatch and environmental legislation, as well as forecast accuracy assessments via FAM reporting.

Preamble: In response to the Board’s Directive comparing monthly Forecast-to-Actual NB imports, in Section 2.3, page 14, NS Power indicated that forecast accuracy can be assessed via FAM reporting. 1. Please identify specifically where (wh...

AI summary The document requests clarification on where forecast accuracy data can be found in FAM filings, whether actuals should be compared to forecasts or budgets, and confirms the accuracy of data in a table. It also raises concerns about the PLEXOS model's reliance on monthly on-peak/off-peak pricing for imports.

ysis showing the impact on marginal and average costs if PHP continues to receive service under the ELIADC through 2026 versus taking service under a to-be-filed successor tariff which may be above-the-line. Please quantify the potential r...

AI summary The text consists of a series of questions directed at NS Power regarding the financial and operational implications of various scenarios, including the impact of ELIADC, accuracy of wind generation data, forecasting methods, risk management, and the potential for more frequent marginal cost updates in the RtR market.

ing the “adjustment for the projected imbalance” is the SO2 emissions limit issue. 2. Please explain any other reasons that NS Power has for eliminating the “adjustment for the projected imbalance.” In its 2018 AAR application, NS Power st...

AI summary The text discusses NS Power's reasons for eliminating the 'adjustment for the projected imbalance' and the treatment of unit commitment costs under different AAR tariff designs. It also references the Board's requirement for sensitivity analyses regarding potential delays in wind resource in-service dates in the 2026 AAR application.

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.

ENERGY CHARGE NSPI's actual hourly marginal energy costs, plus the following fixed cost adders for on-peak and offpeak usage: On-peak (7:00 am – 11:00 pm, non-holiday weekdays): 5.308 ¢/kWh Off-peak (11:00 pm – 7:00am, non-holiday weekdays...

AI summary NSPI's energy charge includes hourly marginal costs and fixed cost adders for on-peak and off-peak usage. On-peak adders are significantly higher than off-peak, with weekend and holiday rates aligned to off-peak. Annual approval from the Nova Scotia Energy Board is required, and a credit is applied for customer-owned transformers based on peak demand.

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 The Port Authority and NSPI have defined responsibilities for electrical equipment maintenance, metering, and operational procedures. Special conditions include metering responsibilities, capital contributions for primary metering, transformer loss adjustments, and power factor requirements.

ENERGY CREDIT 6.736 cents per kilowatt-hour. The Energy Credit for spill service is set annually and is applicable to spilled energy in each hour.

AI summary The Energy Credit for spill service is set at 6.736 cents per kilowatt-hour and is applied annually to spilled energy in each hour.

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.

Customer Baseline Energy Charge, Customer Baseline Energy Cost, and Contribution to Utility Costs In advance of each tariff year, PHP shall advise NS Power of its forecast annual and monthly energy requirements for the subsequent calendar...

AI summary The document outlines the calculation method for the Customer Baseline Energy Charge (CBL Energy Charge) and related components, including the CBL Adder (CBLA) and Variable Capital Charge (VCC), which are used to determine the ELIADC Energy Charge. The process involves forecasting energy requirements, calculating incremental costs, and applying specific formulas based on forecasted CBL Cost levels.

ENERGY CHARGE Energy charge for top-up service is made up of the following two components: - (1) Annually adjusted fuel cost component based on NS Power's incremental cost of serving the LRS' forecasted incremental top-up load.

AI summary The energy charge for top-up service includes an annually adjusted fuel cost component based on NS Power's incremental cost of serving the LRS' forecasted incremental top-up load.