During Winter Storm Fern in January 2026, which caused severe ice, snow, and freezing temperatures across the U.S. Southeast and left over a million people without power, data centers played a crucial role in power support. Amid high electricity demand, federal energy authorities authorized grid operators and power suppliers to activate backup diesel generators at data centers and other large facilities. These industrial generators can produce up to 35 gigawatts—enough electricity for millions of homes. This emergency measure helped alleviate strain on the grid but raised concerns about pollution and sustainability. Experts highlight the growing energy demands of data centers, especially with AI computing needs driving significant increases. Future strategies emphasize flexible power use, demand response programs, distributed renewable energy, and virtual power plants as sustainable solutions to support the grid and reduce environmental impacts during extreme weather events.
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