First Statewide Data Center Ban Passed by Maine Legislature

The Maine legislature has passed the nation's first statewide ban on large data centers, setting a significant precedent in the ongoing debate over AI infrastructure and energy consumption. The bill, which passed along party lines (79-62 in the House, 21-13 in the Senate), establishes a 20-megawatt threshold that effectively blocks construction of modern AI data centers, which typically consume around 40 megawatts. The moratorium lasts until November 2027 and awaits Governor Janet Mills' signature, who has indicated interest in signing such legislation under certain conditions.

This legislative move is particularly notable given Maine's limited data center footprint—Business Insider tracking shows only two potential projects—and its status as having the fourth-highest electricity prices in the U.S. according to Electric Choice. The ban creates a council specifically tasked with evaluating the economic and social costs of data centers on Maine residents, addressing concerns that such facilities drive up home energy costs. Maine's action stands in stark contrast to similar legislative efforts that have stalled or failed in 11 other states including Virginia, Georgia, and New York, where data center industries are more established.

The 20-megawatt threshold represents a strategic barrier rather than a complete prohibition, as it's well below the 40-megawatt average for contemporary data centers while allowing smaller operations. This approach reflects growing regulatory scrutiny of energy-intensive AI infrastructure amid national concerns about grid capacity and electricity costs. The legislation positions Maine as a test case for how states might balance technological development with energy sustainability and consumer protection.