Decades After the U.S. Government Conducted Research Beneath This City, a Promising Clean Energy Technology Returns to Its Roots - Inside Climate News
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Researchers drilling under a college campus in the 1980s paved the way for an ambitious new project in the Twin Cities.

Researchers drilling under a college campus in the 1980s paved the way for an ambitious new project in the Twin Cities.

By Phil McKenna

ST. PAUL, Minn.—Nearly half a century ago, the U.S. Department of Energy launched a clean energy experiment beneath the University of Minnesota with a simple goal: storing hot water for months at a time in an aquifer several hundred feet below ground.

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