AI is exhausting the power grid. Tech firms are seeking a miracle solution.

The mighty Columbia River has helped power the American West with hydroelectricity since the days of FDR’s New Deal. But the artificial intelligence revolution will demand more. Much more.

So near the river’s banks in Central Washington, Microsoft is betting on an effort to generate power from atomic fusion — the collision of atoms that powers the sun — a breakthrough that has eluded scientists for the past century. Physicists predict it will elude Microsoft, too.

The tech giant and its partners say they expect to harness fusion by 2028, an audacious claim that bolsters their promises to transition to green energy but distracts from current reality. In fact, the voracious electricity consumption of artificial intelligence is driving an expansion of fossil fuel use — including delaying the retirement of some coal-fired plants.

In the face of this dilemma, Big Tech is going all in on experimental clean-energy projects that have long odds of success anytime soon. In addition to fusion, they are hoping to generate power through such futuristic schemes as small nuclear reactors hooked to individual computing centers and machinery that taps geothermal energy by boring 10,000 feet into the Earth’s crust.

Tech companies had promised “clean energy would be this magical, infinite resource,” said Tamara Kneese, a project director at the nonprofit Data & Society, which tracks the effect of AI and accuses the tech industry of using “fuzzy math” in its climate claims.

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