Maine Senate Passes Landmark Moratorium on High-Power Data Centers

The Maine Senate took a final vote on April 14, 2026, to pass LD 307, a landmark bill enacting a moratorium on large-scale data center developments requiring 20 megawatts of power or more. This legislation effectively freezes several multi-million dollar projects until November 2027 and now awaits Governor Janet Mills' decision. The primary motivation behind the ban is concern over the strain that energy-intensive data centers place on the regional power grid. The bill's passage, largely along partisan lines, positions Maine as the first state to implement such a ban, with at least 10 other states, including Vermont, New Hampshire, and New York, reportedly considering similar restrictions. Governor Mills faces a complex decision, navigating her current primary race for the United States Senate and recent commitments to regional energy growth, including a six-state bipartisan pact to explore advanced nuclear technology. Opponents of the ban, such as Patrick Woodcock, CEO of the Maine State Chamber of Commerce, argue that data centers are vital customers needed to fund such energy infrastructure projects. Public opinion polls, including a Quinnipiac University survey, indicate significant opposition to AI data centers in communities, largely due to concerns over rising electricity costs. Specific projects will be affected, such as Sentinel Data Centers' 150MW facility in Jay, which would be stymied by the law. However, smaller developers are adapting; LiquidCool Solutions in Limestone announced plans to proceed with its project by capping its electric load at 19.9 megawatts to circumvent the ban. Governor Mills has 10 days to act on the bill, which could signal Maine's stance on the burgeoning AI revolution and its associated environmental and financial costs.