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EPA Administrator Michael Regan confirmed earlier this month that his agency plans to focus on gas-fired power in its updated carbon rule for new power plants.
But how to do it raises a barrage of legal and technological questions that will have implications for how — and whether — the United States can decarbonize its power grid.
The forthcoming rule would replace a 2015 standard that’s still on the books and covers carbon from new coal and new gas power plants. While the Obama-era rule effectively mandates that new coal-fired units reduce emissions through partial carbon capture and storage, its requirements for gas are lax enough to be met easily by most new builds.