New England power system prepared for summer heat
The ISO projects consumer demand will peak at 25,228 megawatts (MW) under normal weather conditions.
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summer
Summer 2025 recap: Reliability maintained as grid sees highest peak in over a decade
New Englanders consumed about 3% less total electricity in June, July, and August than during the same period in 2024.
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Hot weather updates: Week of July 14, 2025
ISO New England is monitoring conditions as hot, humid weather drives higher consumer demand for electricity across the region.
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ISO Minute: Collaborating for summer grid reliability
Jon Gravelin shares how the ISO’s control room works with local control centers and neighboring grid operators to maintain reliability.
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Grid remains reliable as June heat wave brings highest peak in over a decade
Consumer demand for grid electricity unofficially peaked on June 24 at 26,024 megawatts, the highest level seen in the region since 2013.
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Hot weather updates: Week of June 23, 2025
ISO-NE’s system operators and forecasters are continuously monitoring system conditions.
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New England grid prepared for summer demand
ISO-NE anticipates adequate energy supply to meet demand during a warmer than normal summer.
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Internal Market Monitor releases Summer 2024 quarterly report
Increased demand and emissions costs drove wholesale prices up despite lower natural gas costs.
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Summer 2024 recap: Grid reliability maintained through heat waves
Consumer demand for electricity peaked at 24,816 megawatts on July 16 between 5 and 6 p.m., when the regional average temperature was 91°F.
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ISO-NE reliably manages grid through August 1 capacity deficiency
Sufficient generation was available to meet consumer demand for electricity throughout the event.
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