Environment

California grid handles four-year demand high without emergency measures

State officials say California’s high-voltage grid met its heaviest electricity demand since 2022 without an emergency declaration or request for extra conservation.

Published October 13, 2026

Electricity use on September 9 peaked at 50,335 megawatts as extreme heat drove air-conditioning demand across California, according to figures released Tuesday by the Governor’s Office. The total was about 3% below the state’s record of 52,061 megawatts, set during the September 2022 heat wave.

The state said grid operators met the 2026 peak without emergency measures. That contrasts with 2022, when California ISO issued a record 10 consecutive days of Flex Alerts while asking customers to reduce electricity use.

Storage and new capacity expand the buffer

The Governor’s Office credits a broader resource mix and closer coordination among California ISO, the California Public Utilities Commission and the California Energy Commission. It said more than 39,000 megawatts of utility-scale clean energy have been added since 2019, including battery resources that grew from fewer than 700 megawatts to more than 23,000 megawatts.

California ISO’s 2026 summer assessment separately found sufficient resources for expected conditions and estimated a 2,547-megawatt reliability surplus under the industry’s one-in-10 planning standard. The grid operator cautioned, however, that widespread extreme heat, wildfires and other overlapping emergencies can still strain supplies.

The new peak is a retrospective measure rather than a guarantee against future outages. California ISO continues to balance supply and demand in real time, and prolonged heat can reduce generator availability while raising demand across the wider West.

Sources: Governor of California — October 13, 2026 → · California ISO 2026 summer assessment →