New York's power grid will need substantial investment in generation and transmission over the next 20 years as demand grows and older resources retire, according to a draft report from the New York Independent System Operator.
The draft 2025-2044 System and Resource Outlook, dated June 24, says the pace and shape of that investment will depend heavily on how state policy goals are implemented.
The report says electricity demand is expected to rise materially because of building, transportation and industrial electrification, along with large concentrated loads from data centers and manufacturing facilities. Those trends are expected to increase total energy use and peak system needs while shifting demand patterns toward a winter-peaking system.
NYISO said demand growth is outpacing resource additions, making timely generation and infrastructure development more urgent. The draft report also says where large new loads are located will affect infrastructure needs, congestion and system efficiency.
The outlook evaluates multiple demand trajectories and 20 scenarios to reflect uncertainty over demand growth, resource availability and policy. It says recent developments, including delays in offshore wind projects, slower renewable development and emerging reliability needs in New York City and Long Island, have broadened the range of future system conditions.
The report says futures requiring a zero-emissions electric system would drive substantially higher levels of installed capacity than futures allowing limited emissions. Across the scenarios evaluated, new resource development ranges widely and could approach about 105 gigawatts, compared with roughly 30 to 60 gigawatts under less stringent decarbonization policies.
For comparison, the draft says less than 15 gigawatts of new resources have been added to the New York system over the past 25 years.
NYISO said firm, dispatchable capacity remains essential in all futures to serve demand and provide grid services such as operating reserves, ramping, regulation and voltage support. The report says new or repowered dispatchable fossil generation could provide those capabilities while lowering emissions intensity compared with the existing fleet, while nuclear resources could also support energy and capacity needs without associated emissions.
The draft also says coordinating new resource development with generation retirements is increasingly critical. Delays in new resources or misalignment with retirements could tighten system conditions, according to the report.
The outlook is marked as a draft for discussion purposes.
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