Transmission lines can carry power long distances, but the U.S. grids aren't all connected.

Extreme weather is posing a growing threat to the power supplies Americans rely on.

In 2021, a fierce winter storm left millions of Texans without electricity and water for days. Hurricane Helene in 2024 knocked out power to about 5 million customers across the U.S. Southeast.

Originally published on theconversation.com, part of the BLOX Digital Content Exchange.

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