FEDERAL ENERGY REGULATORY COMMISSION

WASHINGTON, DC 20426

OFFICE OF ENERGY MARKET REGULATION

New York Independent System Operator, Inc.

Docket Nos.  ER21-2460-006

  ER21-2460-007

  ER21-2460-008

  ER21-2460-009

  ER21-2460-010

Issued: October 31, 2025

On October 20, 2023, April 22, 2024, October 21, 2024, December 19, 2024, and August 13, 2025, New York Independent System Operator, Inc. (NYISO) submitted, respectively, informational filings and compliance filings with proposed revisions to NYISO’s Market Administration and Control Area Services Tariff (Tariff),[1] in compliance with the directives in an April 2023 Commission order[2] and the requirements of Order No. 2222.[3]  Pursuant to authority delegated to the Director, Division of Electric Power Regulation – East under 18 C.F.R. § 375.307, the submittals are accepted for filing, effective 12/31/9998, as requested.  No less than seven days prior to the date NYISO implements the proposed Tariff revisions with a 12/31/9998 effective date, NYISO is required to make a compliance filing in this docket through the Commission’s eTariff system with the accepted tariff record text that establishes the actual effective date of the Tariff records and designates the records accepted in this order as OBE (overtaken by events).[4]

The filings were publicly noticed.  No protests or adverse comments were filed.  Pursuant to Rule 214 of the Commission’s regulations (18 C.F.R. § 385.214), notices of intervention, timely-filed motions to intervene, and any unopposed motions to intervene out-of-time filed before the issuance date of this order are granted.

This action does not constitute approval of any service, rate, charge, classification, or any rule, regulation, contract, or practice affecting such rate or service provided for in the filed document(s); nor shall such action be deemed as recognition of any claimed contractual right or obligation affecting or relating to such service or rate; and such action is without prejudice to any findings or orders which have been or may hereafter be made by the Commission in any proceeding now pending or hereafter instituted by or against the applicant(s).

This order constitutes final agency action.  Requests for rehearing by the Commission may be filed within 30 days of the date of issuance of this order, pursuant to 18 C.F.R. § 385.713.

Issued by: Leanne Khammal, Acting Director, Division of Electric Power Regulation – East

Appendix – eTariff Records

New York Independent System Operator, Inc.

NYISO Tariffs

• NYISO MST, 2.12 MST Definitions - L (17.0.0)
• NYISO MST, 2.14 MST Definitions - N (26.0.0)
• NYISO MST, 2.15 MST Definitions - O (19.0.0)
• NYISO MST, 4.2 MST Day-Ahead Markets and Schedules (36.0.0)
• NYISO MST, 4.4 MST Real-Time Markets and Schedules (52.0.0)
• NYISO MST, 15.3 MST Rate Schedule 3 - Payments for Regulation Service (20.0.0)
• NYISO MST, 15.4 MST Rate Schedule 4 - Payments for Supplying Operating (36.0.0)
• NYISO MST, 23.3 MST Att H Criteria for Imposing Mitigation Measures (2) (35.0.0)
• NYISO MST, 23.4-23.4.4 MST Att H Mitigation Measures (56.0.0)
• NYISO MST, 30.6 MST Att O Data Collection and Disclosure (11.0.0)

[1] See Appendix for eTariff records.

[2] N.Y. Indep. Sys. Operator, Inc., 183 FERC ¶ 61,035 (2023).

[3] Participation of Distributed Energy Res. Aggregations in Mkts. Operated
by Reg’l Transmission Orgs. & Indep. Sys. Operators, Order No. 2222, 172 FERC
¶ 61,247 (2020), order on reh’g, Order No. 2222-A, 174 FERC ¶ 61,197, order on reh’g, Order No. 2222-B, 175 FERC ¶ 61,227 (2021).

[4] NYISO must make a compliance filing using Type of Filing Code 80 in this docket by including the associated filing identifier (associated_filing_id) for this filing at the filing level.  The filing must include tariff records with the effective date for the previously-accepted tariff records and also include, at the tariff record level, the associated filing identifier (associated filing_id), associated record id (associated_record_id), and associated option code (associated_option_code) of the original tariff records accepted with a 12/31/9998 date.