Maine set to become the first state to ban data center projects for over a year

Maine is on the verge of enacting a temporary ban on new data center construction, potentially becoming the first U.S. state to do so. The proposed legislation, which passed the state's House of Representatives with bipartisan support and is backed by Governor Janet Mills, would halt new data center projects requiring at least 20 megawatts until November 2027. This pause aims to give the state time to evaluate the environmental and electricity grid impacts of data centers, especially in light of the rapid growth of artificial intelligence. The initiative stems from increasing concerns over data centers' high power demands contributing to some of the nation's highest residential electricity rates in Maine. Experts like Anirban Basu, chief economist for the Associated Builders and Contractors, view Maine's action as a bellwether for other states facing similar challenges. Tony Buxton, an attorney specializing in climate and energy, noted the strong public fear of data centers and AI as a political reality driving such measures. The prospect of such a moratorium is already influencing data center developers, who are becoming more cautious, with a significant number of cancellations reported in late 2025. Site selection consultant Tracey Hyatt Bosman highlighted that proposed local regulations serve as critical warning signs for developers. Although amendments are possible, political insiders anticipate the bill will ultimately pass into law due to widespread support.