Topic:"Wholesale Market Operation" in M12551

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 key terms related to the Wholesale Market Backup/Top-Up Service Tariff, including GC, CD, and CCF, which are used to determine capacity contributions and contract demand in the context of dispatchable generation and NSPI's system planning.

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 subscription periods, and metering equipment installation. Applications with a CCF value greater than zero must be submitted by January 31st, while those with a CCF value of zero must be submitted by September 1st. The service is renewable annually or on a three-year forward basis under certain conditions.

2026 AAR Application Appendix E1 Page 4 of 8 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 4 of 6

AI summary The document outlines the Wholesale Market Backup/Top-Up Service Tariff, focusing on the structure and terms of the service. It is part of a larger application and includes redacted confidential information.

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.

2026 AAR Application Appendix E1 Page 7 of 8 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET NON-DISPATCHABLE SUPPLIER SPILL TARIFF Page 1 of 2

AI summary The document outlines a Wholesale Market Non-Dispatchable Supplier Spill Tariff, which is part of the 2026 AAR Application Appendix E1. This section is redacted and contains confidential information.

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 excess hourly energy production over customer requirements, with compensation limited to the supplier's Maximum Spill Capacity, which must be approved by NSPI. Metering equipment installation is required, with costs borne by the supplier.

2026 AAR Application Appendix E1 Page 8 of 8 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET NON-DISPATCHABLE SUPPLIER SPILL TARIFF Page 2 of 2 - (2) The Company reserves the right to have a separate service agreement, if in t...

AI summary The document outlines the conditions under which a separate service agreement may be required for a non-dispatchable supplier to ensure the integrity of the power supply system. It emphasizes that the supplier must make arrangements to prevent deterioration of system reliability, including considerations such as harmonic voltage, voltage flicker, and stability.

WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 1 of 6

AI summary The document outlines the Wholesale Market Backup/Top-Up Service Tariff, which is part of the regulatory framework governing energy services in Nova Scotia. It provides the structure for backup and top-up services in the wholesale market, ensuring reliable power supply and proper cost allocation.

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 customer on a minimum three-year forward basis, unless this requirement is waived by NSPI. - (...

AI summary This section outlines the procurement and availability of capacity based on the capacity cost factor (CCF) and the financial obligations of the wholesale customer in the event of failure by the Internal or External Resource to deliver scheduled energy or capacity. It also describes the process for adjusting the CCF and submitting disputes to the Board for adjudication.

WHOLESALE MARKET NON-DISPATCHABLE SUPPLIER SPILL TARIFF Page 1 of 2

AI summary The document introduces the Wholesale Market Non-Dispatchable Supplier Spill Tariff, outlining a framework for managing energy spillage in the wholesale market by non-dispatchable suppliers.

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 is available for independent non-dispatchable electric generators in the Wholesale Market, specifically for scheduled 'spill energy.' Spill energy compensation is limited to the supplier's Maximum Spill Capacity, which must be approved by NSPI. Suppliers are required to install metering equipment, with associated costs borne by the supplier.

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).

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.

2.2.2 Rejected Option; Modified WMP Agreement and Market Rules Consideration was given to an alternative option based on the Market Rules. Under this option, the Wholesale Market Participation (WMP) Agreement and the Wholesale Market Rules...

AI summary An alternative option based on Market Rules was considered, which would have modified and expanded the Wholesale Market Participation (WMP) Agreement and Market Rules to define terms and conditions between NS Power and the Local Resource Supplier (LRS). This option was ultimately rejected.

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.

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. The tariff...

AI summary The tariff is available to wholesale customers, including Nova Scotia Power Incorporated and municipal utilities. It outlines the conditions for backup/top-up service, including application timelines, requirements for metering equipment, and approval processes by the Company. Applications are required annually or by September 1st depending on the CCF value.

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. The tarif...

AI summary The tariff is available to wholesale customers, defined as Nova Scotia Power Incorporated or municipal utilities. Applications for service must be submitted annually by specific deadlines, and backup/top-up service is subscribed on a minimum 12-month or three-year forward basis depending on the CCF value. Metering equipment must be installed and approved by the Company.

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 Special conditions outline requirements for wholesale customers regarding import capacity support, transmission assurance, reliability performance, and financial obligations in case of failure. These include documentation requirements, capacity procurement timelines, and procedures for cost recovery and CCF adjustments.

Billing demand is determined based upon the following formula: Billing demand = $$(PR/(1+PR) min(CD, CCF GC)) + (CD - min(CD, CCF GC))$$ Where: PR is Planning Reserve (based on NPCC planning criteria, i.e. 20% or as updated) GC is the thir...

AI summary The document outlines the formula for calculating billing demand, which incorporates planning reserve (PR), customer capacity (CD), and generating capacity (GC). For non-dispatchable generation, GC is defined as the Maximum Spill Capacity (MSC) under the Wholesale Market Non-Dispatchable Supplier Spill Tariff.

2026 AAR Compliance Filing Appendix A 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 wholesal...

AI summary This section outlines the terms of the Wholesale Market Backup/Top-Up Service Tariff, specifying that capacity based on the Capacity Credit Factor (CCF) is available for three years unless waived. It also details the financial obligations of the wholesale customer in case of service failures and the process for adjusting the CCF if discrepancies arise.

2026 AAR Compliance Filing Appendix H Page 11 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 1 of 6

AI summary The document outlines the Wholesale Market Backup/Top-Up Service Tariff, which is part of the 2026 AAR Compliance Filing. It includes a page reference and mentions that the content has been redacted due to confidentiality.

2026 AAR Compliance Filing Appendix H Page 15 of 25 REDACTED (CONFIDENTIAL INFORMATION REMOVED) WHOLESALE MARKET BACKUP/TOP-UP SERVICE TARIFF Page 5 of 6 - (iv.) Any export transactions utilizing energy from the Internal Resource will be r...

AI summary The document outlines the recallability of energy from internal and external resources in the event of resource adequacy needs. It specifies conditions for scheduling and delivering energy from external resources to NSPI, including documentation requirements for capacity and control.

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.

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 wholesale customer must provide documentation ensuring import capacity is supported by the external control area and has firm transmission to NSPI. If an internal or external resource fails to deliver energy or capacity, the wholesale customer must reimburse NSPI for incurred costs. Disputes over adjustments to the CCF may be submitted to the Board for expedited adjudication.

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.

he 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. Docume...

AI summary The wholesale customer must provide documentation to ensure import capacity is supported and has curtailment priority, and that firm transmission is in place. If an Internal or External Resource fails to deliver energy or capacity as directed, the wholesale customer must reimburse NSPI for costs incurred, with potential adjustment of the CCF or adjudication by the Board.

nthly on-peak / off-peak pricing for imports, which may be reasonable in aggregate but may not reflect actual market pricing during periods of high system demand across interconnected power systems .

AI summary The text discusses the potential reasonableness of monthly on-peak and off-peak pricing for imports, noting that while it may be reasonable in aggregate, it may not accurately reflect actual market pricing during periods of high system demand across interconnected power systems.

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 This tariff applies to independent non-dispatchable electric generators in the Wholesale Market, specifically for scheduled 'spill energy.' Spill energy is defined as surplus energy produced above the scheduled hourly requirement, with compensation capped at the supplier's Maximum Spill Capacity, which must be approved by NSPI. Metering equipment is required, and installation costs are the supplier's responsibility.