The conversation during a five-hour meeting on changes to NYISO’s transmission planning processes became heated at times, as stakeholders challenged ISO officials on exactly how they will develop the possible scenarios they propose to determine reliability needs.

NYISO is proposing to use a set of multiple scenarios rather than relying on a single base case in its Reliability Planning Process to avoid study-by-study fluctuations in determining reliability needs.

NYISO began what is expected to be a yearlong effort of revising its Reliability Planning Process at a Transmission Planning Advisory Subcommittee meeting.

NYISO stakeholders debated the validity of the ISO's recent finding of a reliability need in New York City by summer 2026.

NYISO released an updated draft of its Comprehensive Reliability Plan for 2025-2034 that calls for the acceleration of new generation development and preservation of “critical, dispatchable capability.”

NYISO released the first draft of its 2024 Reliability Needs Assessment showing a capacity deficiency in New York City beginning in 2033 and proposing to declare a reliability need for its zone.

NYISO made significant updates to its assumptions as part of its final Reliability Needs Assessment, which now shows no concern of a capacity deficiency and a loss-of-load expectation of less than 0.1 in 2034.

New York will be short 1 GW of resources by 2034, driven by increased demand, large load growth and lack of natural gas, according to the preliminary results of NYISO's biennial Reliability Needs Assessment.

NYISO informed the Transmission Planning Advisory Subcommittee and Electric System Planning Working Group it intends to seek a May 2 effective date for Order 2023.