PJM Says Enough Power for Winter Demand Peak

The grid operator expects sufficient resources to meet a forecasted winter peak demand of about 147,500 MW, which would set a new record.

Updated on Nov. 5, 2026 in Utilities

Isometric editorial illustration of a single steel transmission tower with power lines over a snowy field, evoking the strain on the regional grid. — PJM Interconnection said Tuesday it expects enough generating resources to meet a forecast winter peak of about 147,500 MW, which would top its all-time winter record set in January 2025. AI Illustration. Upload story photo >

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PJM Interconnection said it expects sufficient resources to meet winter demand, even as it forecasts a peak of about 147,500 MW that would surpass its all-time winter record of 143,700 MW set on Jan. 22, 2025. The grid operator expects 182,426 MW of operational capacity to cover the load.

Why it matters

Rising demand from data centers and other Large Load customers, along with generator retirements and slow new generation projects, is narrowing PJM's reserve margins. Reliable winter operations across the PJM footprint are central to keeping electricity flowing for U.S. households and businesses.

PJM forecasts winter peak demand of about 147,500 MW, a roughly 5% rise since 2022, with 182,426 MW of expected operational capacity. Stress scenarios were modeled up to 152,200 MW, and the outcome depends on how much winter weather drives demand.

The players

PJM Interconnection

PJM Interconnection is the regional transmission organization that coordinates the movement of wholesale electricity across 13 states and the District of Columbia, including Maryland, Virginia, and the District of Columbia.

U.S. Department of Energy

The U.S. Department of Energy is the federal agency that oversees national energy policy and grants emergency authorities to grid operators during periods of stress.

The details

PJM coordinates generation and transmission owners and tests generators that have not run for weeks before extreme weather. The operator has activated Demand Response 15 times in 2025 and 2026, compared with eight times in the previous eight years, and has requested emergency authority from the Department of Energy to direct data centers and Large Load customers to use backup generators.

Jan. 22, 2025: PJM reached its all-time winter peak of 143,700 MW.
Dec. 2022: Winter Storm Elliott generator outages occurred.
Jan. 26 to Feb. 2, 2026: Hourly winter peak loads exceeded 130,000 MW for eight straight days.
Winter 2026-27: PJM expects sufficient resources for forecasted peak demand.

Season Trajectory

The forecast builds on the generator outages seen during Winter Storm Elliott in December 2022, when cold weather exposed reliability gaps. Demand is now climbing from data centers and other large loads even as generator retirements continue, tightening the margin for error.

Households and businesses in the PJM footprint could feel the strain if demand peaks near the forecast and reserves run thin during a cold snap. Demand response calls and emergency backup generator orders are tools PJM has already used, which can affect large commercial customers first.

The takeaway

Grid reliability in the winter depends on matching generation to rising demand, not just on normal conditions. Watching reserve margins and weather forecasts offers a clear signal of how tight supply may become.