NYISO Sets Effective Date For Additional Operating Reserve Procurement Requirements

The New York Independent System Operator, Inc. (NYISO) has set an effective date for implementation of additional operating reserve procurement requirements throughout the New York Control Area (NYCA) to account for anticipated forecast uncertainties in both the Day-Ahead Market and Real-Time Market (i.e., “Uncertainty Reserve Requirements”).

The Uncertainty Reserve Requirements were previously adopted by FERC

For the Day-Ahead Market, NYISO's Services Tariff revisions will be incorporated into the execution of the Day-Ahead Market occurring on September 3, 2026 for the September 4, 2026 market day. For the Real-Time Market, the Services Tariff revisions will introduce the real-time Uncertainty Reserve Requirement calculation on September 3, 2026, with Uncertainty Reserve Requirements being incorporated into the entire dispatch day of September 4, 2026, for the first time.

Docket ER25-1998