Hot days ahead — Weeks before the depths of summer, record-setting heat is scorching large swaths of the country, threatening to destabilize the power grid and compromising human health. The human toll is staggering. At least 1,300 people die a year in the U.S. due to extreme heat, according to federal data. And a report published this week in Environmental Research found that climate change-driven deaths, especially from heat, are vastly undercounted. At least 53 people died from extreme heat after being trapped in a tractor-trailer in San Antonio earlier this week. This month is already the hottest June on record for that city, with 17 days so far hitting 100 degrees Fahrenheit or higher. Migrants entering the country through the southwestern border are particularly vulnerable to heat deaths. U.S. Customs and Border Protection counted 557 deaths along the border last year, the highest since the agency began keeping track. Temperatures are reaching near or above 100 degrees in major cities, shattering records, and boosting demand for air conditioning at unanticipated rates, straining an already vulnerable electricity system. A fragile grid The retirement of coal-burning power plants coupled with rising energy demand tied to another hot summer is exacerbating grid instability. And energy regulators are warning that the kinds of rolling blackouts all too familiar to states like Texas and California could spread across the Midwest, Great Plains and Southeast. "Low-income families and, accordingly, communities of color are going to be bearing the brunt of the tsunami of shut-offs and the lack of access to electricity and air conditioning," said Jean Su, senior attorney with the Center for Biological Diversity. "We're unfortunately going to see fatal and severe public health consequences." States are trying to get creative. Texas, which reported record-high electricity demand this month, is weighing a proposal from Tesla that would create a virtual power plant made up of home solar panels and batteries. Earlier this month, the Biden administration used the Defense Production Act to order an acceleration of domestic manufacturing and deployment of rooftop solar and storage, which could insulate low-income customers from blackouts. Still, experts worry that the instability driven by extreme weather could stall efforts to shift more of the electric grid to zero-carbon sources. Worsening the problem is a sluggish regulatory process that has stalled scores of renewable power projects from connecting to the grid. To address this, the nation's top energy regulator has mapped out a plan to overhaul U.S. transmission and open the floodgates to clean power. Who pays for the grid transformation is another story.
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