The rolling blackouts affected upwards of 2 million Californians. Many of the outages took place in the afternoon, when power demand peaked as people starting turning up their air conditioning at the same time that solar power supplies started slowing down as the sun set.
The state’s three biggest utilities – Southern California Edison, Pacific Gas & Electric, and San Diego Gas & Electric – cut off power to homes and businesses for roughly an hour at a time until the close of an emergency declaration, and this was followed by a second outage.
On top of that, erratic output from the state’s wind farms failed to make up the gap. Around a third of the state’s electricity comes from renewable sources thanks to state law mandates, and these alternatives proved incapable of keeping up during peak power usage. In the past, utilities and grid operators in the state bought extra electricity from other states when it fell short, but the vast size of the heat wave meant that other states were also reaching their limits and had none to spare.
Governor Gavin Newsom ordered an investigation into the outages seen in the state over the weekend, vowing to uncover the cause. However, Republican Assemblyman Jim Patterson of Fresno, who serves as the Committee on Utilities and Energy’s Vice Chair, said that the problem can be traced to California’s reduced dependence on natural gas.
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