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The West, Reliant on Hydro, May Miss It During Heat Waves

When California suffers a heat wave, it leans heavily on hydropower from the Pacific Northwest to keep the lights on.

But that hydropower may not always be available when it’s most needed, as climate change is shifting the ground on which the West’s dams sit. Higher temperatures means snowmelt occurs earlier in the year and leaves less water available for power generation during the depths of summer.

Grid Monitor Warns of U.S. Blackouts in ‘Sobering Report’

The central and upper Midwest, Texas and Southern California face an increased risk of power outages this summer from extreme heat, wildfires and extended drought, the nation’s grid monitor warned yesterday.

In a dire new assessment, the North American Electric Reliability Corp. (NERC) described regions of the country pushed closer than ever toward energy emergencies by a combination of climate change impacts and a transition from traditional fossil fuel generators to carbon-free renewable power.