Topic:"Energy Efficiency" 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.

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.

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.

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 presents 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 various customer classes and industrial sectors.

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.

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.

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.

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.

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.

Annually Adjusted Rates for 2026 (NSEB M12551) NSPI Responses to NSEB Information Requests Request IR-1: Appendix A2 presents the annual marginal generation costs by month. (a) Please explain why for February and March. (b) Please provide...

AI summary The document discusses NSPI's response to NSEB's information request regarding annual marginal generation costs, explaining variations in February and March, and the exclusion of Output Based Pricing System costs. It also addresses the forecast of marginal costs for Peak in June and July, citing the integration of renewable energy and GHG emission regulations.

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

AI summary The document provides a detailed breakdown of energy sales, losses, and demand across various customer classes for the year ending December 31, 2026, highlighting metrics such as MWH sales, line losses, and demand factors.

3.5 Behind-the-Meter RtR supply During the stakeholder consultations, it was suggested by a stakeholder that the RtR framework should accommodate a model which would permit a LRS to connect a renewable low impact generator directly to a nu...

AI summary The document discusses a proposed model for Behind-the-Meter (B-t-M) Real Time Retail (RtR) supply, where a Local Resource Supplier (LRS) connects renewable generators to multiple customers behind a single NS Power meter. This could shift cost burdens to NS Power and its remaining customers, conflicting with the 'no-harm' provisions of the Electricity Act.

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.

ergy requirements (MWh) under each of the BUTU Tariff and the Municipal Tariff under the reciprocal and non-reciprocal billing approaches, as well as the forecast Spill Tariff energy in each scenario. NS Power provided its response in NSPI...

AI summary The text discusses the impact of reciprocal and non-reciprocal billing arrangements on energy spill from the Ellershouse Wind Farm. Under a non-reciprocal arrangement, the MEUs spill significantly less energy to NS Power, which is more beneficial when BUTU energy is more expensive. The MEUs requested legislative changes to eliminate the need for reciprocal arrangements, which were addressed in the More Access to Energy Act. The Board directed NS Power to further review the issue in the 2026 AAR application.

2026 COSS Methodology Disproportionately impacts RtR Customers The RtR tariffs were developed and approved under a different cost allocation model and therefore do not reflect the substantial shifts in demand-related allocations now propos...

AI summary The 2026 COSS methodology disproportionately impacts RtR customers by shifting costs from energy to demand, increasing demand charges and misaligning cost allocation with the current framework. This could undermine competition in the RtR market and contradict legislative objectives, requiring a tariff review before Q4 2026.

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.

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 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 Licenced 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.

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 (11) SUB-TOTAL 9,8...

AI summary The table presents data for the year ending December 31, 2026, including various energy metrics such as MWH, energy line, system coincidence, and demand system. It includes subtotals and breakdowns for different classes and voltage-based service levels, such as EHV and HV.

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 and operation at the port. Metering responsibilities, capital contributions for special metering, and transformer loss adjustments are outlined. The Port Authority must also provide a schedule of vessel demand and ensure power factor compliance.

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 Licenced 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.

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.

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

AI summary The document outlines special conditions for service agreements, including the company's right to establish separate agreements, customer responsibilities for maintaining power system integrity, and specific requirements related to metering, transformer losses, and power factor adjustments.

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.

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.

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.

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.

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

AI summary The text references a specific section of an application (M12551, Exhibit N-1, Section 7.3.1.2) related to the Annually Adjusted Energy Savings Credit, indicating a focus on energy savings mechanisms and their adjustment processes.

1 Request IR-3: - 2 Preamble: Based on the principles of economic dispatch, and recognizing the influence 3 of environmental legislation, REI expects that the highest variable cost generators would 4 generally be: diesel combustion turbine...

AI summary The document requests NS Power to confirm or refute REI's assertion that diesel combustion turbines, natural gas generation from Tufts Cove, and imports are the highest variable cost generators. It also asks for a comparison between PLEXOS model forecasts and actual data on marginal generator hours for 2024 and 2025.

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.

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 Optional Generation Load Following, as outlined in the document.

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

AI summary The document outlines special conditions for service agreements, specifying that customers must ensure their load does not negatively impact the power supply system. It also addresses transformer losses, power factor requirements, and the financial responsibility for special metering and communication systems.

the wholesale customer must provide: - 1. Documentation demonstrating that the import capacity will be supported by the external control area and afforded the same curtailment priority as the external control area's native load. - 2. Docum...

AI summary The text outlines conditions for wholesale customers importing capacity, requiring documentation of support from external control areas and firm transmission. It also specifies that failure to deliver energy or capacity may result in financial penalties and potential adjustments to the Capacity Credit Factor (CCF) or adjudication by the Board.

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.

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.

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 special conditions outline responsibilities between the Port Authority and NSPI regarding electrical equipment maintenance, metering, and operational procedures. Key points include the Port Authority's responsibility for infrastructure, metering arrangements, 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.