Maine's legislature passed the first US statewide moratorium on large data centre development on 22 April 2026, with the bill awaiting the signature of Governor Janet Mills. 1 2 Good Jobs First, a Washington-based subsidy-tracking research organisation, counts 12 in-session states with active moratorium bills in the 2026 legislative cycle, including Oklahoma SB 1488 running to November 2029 and Vermont S.205 to July 2030. 3 Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez have introduced a federal proposal covering environmental, energy, labour, and civil-liberties conditions.
Maine's bill is the first state-level data centre moratorium to clear a legislature anywhere in the United States. Prior moratoria have been county-level or executive in nature. Twelve states with active bills in a single session is qualitatively different from the periodic local opposition that has dogged hyperscaler siting since the early 2010s. The pattern points at three converging pressures: residential electricity rates rising faster than wholesale prices, water-stress disclosure under state freedom-of-information frameworks, and zoning friction at the planning-commission level.
Governor Mills now holds a roughly two-week decision window. A signature enacts a freeze on new approvals while the state revisits its grid, water and tax-incentive framework. A veto sends the bill back for an override vote that Maine's split legislature is unlikely to muster. Letting the bill lapse without signature is the third path and historically the governor's preferred tactic when the politics cut both ways. The Sanders-Ocasio-Cortez federal proposal will not pass the current US Congress, but it does establish the template that future legislation can be drafted from when the political climate shifts.
Twelve simultaneous state-level bills make the consent constraint legislatively visible for the first time. The next test is whether Oklahoma SB 1488 or Vermont S.205 clears its respective chamber before the summer recess. The breaks are no longer being applied at zoning hearings alone; they are being drafted as primary legislation in twelve state capitols simultaneously.
