![]() Solar energy levels off in the evening, when temperatures subside, but Californians are continuing to crank their air conditioning. The drought has diminished hydropower, a low-cost resource used to quickly ramp up electricity. The unprecedented demand and oppressive temperatures across huge swaths of the state have imposed continuous stress on the power grid. ![]() But a few cities - including Alameda, Palo Alto and Healdsburg - reported temporary losses of power in some areas, at the direction of the grid operator. There really isn’t going to be substantial relief in that part of the state until at least Friday or Saturday.”Īccording to the ISO, the grid Tuesday evening hit a peak demand of 52,061 megawatts, “a new all-time record.” ISO officials said that despite the strain, they did not order “load sheds” that would have cut power, thanks to conservation efforts. “It might be one of the worst heat waves on record period in any month, given its duration and its extreme magnitude. “This will be essentially the worst September heat wave on record, certainly in Northern California, and arguably for the state overall,” said Daniel Swain, a UCLA climatologist. ![]() It all offers a disturbing preview of the state’s future battles with extreme heat amid a warming climate. And coastal areas - often a refuge from heat - were also hit with scorching temperatures. ![]() Even at night, record-high low temperatures are offering little relief to residents or power suppliers. A heat wave that has shattered temperature records nearly broke California’s overtaxed electric grid Tuesday evening, pushing it to the brink of rolling blackouts but narrowly averting widespread power loss.īut those extremes don’t do justice to what is shaping up to be the most brutal September heat wave in California history, expected to last nine days. ![]()
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