The rush to power data centers is weakening the Clean Air Act

The push to build data centers for AI is running into a familiar complaint: that regular electric customers will end up paying for the massive power those facilities need. In response, some states have pushed data centers to bring their own power plants instead of connecting to the shared grid. Pennsylvania's governor recently ordered that new AI data centers must provide and pay for their own electricity, and Texas has blocked new data centers from connecting to its grid.

That shift comes with a catch. New federal guidance says the Clean Air Act's Acid Rain Program, which requires continuous monitoring and reporting of pollution from power plants, does not apply to "islanded" plants built to serve a single facility rather than the public grid. That means plants built just for data centers can skip a permit and the pollution tracking that comes with it. Federal regulators are also considering a rule that would let more new power plants skip public notice and comment before getting permits. None of this changes pollution limits directly, but it does remove some of the tools states and local agencies use to see what these plants are emitting.

This mostly plays out far from any single house, since these are large gas plants serving big data centers, some as large as 9 gigawatts. But it matters for anyone near a proposed site, and it signals a broader loosening of oversight as utilities scramble to meet AI-driven power demand with fossil fuels rather than cleaner sources.