Grid operators voiced confidence before the most recent heat wave struck. PJM load demand peaked this weekend at 150,452 megawatts, which would not qualify for PJM’s top 10 most summer demand days.

U.S. heat wave: Utilities and the power grid are keeping up for now Earlier this year, there had been warnings that supply during peak summer hours might not meet demand.

Operators of California's power grid issued a statewide Flex Alert Wednesday to call for voluntary electricity conservation because of the high energy demand as a heat wave settles over the Bay ...

Earlier research by the multi-university 3HEAT Study that modeled the effect of a heat wave plus grid failure on Phoenix (and also Atlanta and Detroit) has found that the risk of urban blackouts ...

As the heat wave slogged on for a fifth day, grid operators across the country were reporting that supply was keeping up with demand. That includes the operators that serve the Mid-Atlantic States ...

The dangerously hot weather strained the power grid to failure throughout Los Angeles County on Friday, the peak of the record-setting heat wave. "Extreme heat has caused power outages in some ...