Why the Maine data center moratorium was vetoed
Mills said in her veto letter to the Maine Legislature that LD 307 would have created a council to study data center siting and placed a moratorium on state and municipal permitting for data centers with loads of 20 megawatts or more until Nov. 1, 2027.
The governor said she agreed with the bill’s goals of protecting ratepayers, maintaining grid reliability, minimizing environmental impacts and supporting responsible economic development. Her objection was the lack of a carveout for Jay, where developers have proposed a $550 million data center redevelopment at the former Androscoggin Mill.
“A moratorium is appropriate,” Mills wrote, citing data centers’ impacts elsewhere on the environment and electricity rates. But she said the final bill failed to allow a Jay project that has local and regional support. Mills said the redevelopment is expected to create more than 800 construction jobs, at least 100 permanent jobs and substantial property tax revenue for Jay.
What LD 307 would have done
LD 307 was not a permanent ban. The amended bill language would have barred municipalities, quasi-independent state entities and state agencies from accepting applications or issuing permits for qualifying data centers before Nov. 1, 2027. It also would have directed the Department of Energy Resources to convene the Maine Data Center Coordination Council to examine electric load growth, infrastructure needs, ratepayer protections, water use, emissions, land use and host-community impacts.
The Associated Press described the veto as blocking what would have been the nation’s first statewide moratorium on data center construction, a distinction that had turned Maine into a national test case as artificial intelligence drives new demand for computing infrastructure and electricity-hungry facilities, according to national coverage of the veto.
Jay project became the breaking point
The fight over Jay had been building before the veto. In March, the Lewiston Sun Journal reported that the developer behind the former mill site was seeking an exemption from the proposed law, warning that the moratorium could derail redevelopment in a region still recovering from the loss of paper industry jobs, according to an older report on the Jay mill exemption request.
That history shaped Mills’ argument. She said the Androscoggin Mill’s 2023 closure dealt a severe blow to Jay and surrounding Franklin County, and that the proposed project would reuse existing industrial buildings, water systems and electrical infrastructure. Supporters of the veto framed the decision as an economic lifeline for a community that had already lost one of its defining employers.
Opponents saw the veto differently. The bill’s sponsor, Rep. Melanie Sachs, D-Freeport, said the decision could expose ratepayers, the grid and the environment to consequences that the proposed council was meant to study before large projects moved forward. Local coverage noted that an override remains possible, but the bill’s final enactment votes — 79-62 in the House and 21-13 in the Senate — fell short of the two-thirds margins needed to override a veto, according to coverage of the final votes and reaction.
Local pressure was already spreading
The statewide debate did not emerge in isolation. Bangor officials were already considering a six-month pause on data center development as state lawmakers debated LD 307, with city staff citing concerns that local ordinances did not adequately address infrastructure demands, environmental impacts and operational issues tied to data centers, according to an older Government Technology report on Bangor’s proposed local pause.
Engineering News-Record also reported before the veto that Maine lawmakers were moving to pause large data centers even though New England had not yet seen the same level of large-load data center demand as other regions. That older industry analysis said the proposal reflected concern over grid capacity, ratepayer exposure and infrastructure risk before a larger wave of projects arrived, according to Engineering News-Record’s April 16 report.
National stakes after the Maine data center moratorium veto
Mills’ veto comes as states and municipalities around the country are weighing how to regulate data centers tied to artificial intelligence, cloud computing and large-scale digital services. Reuters reported that Maine was among more than a dozen states considering data center curbs and that Mills also planned an executive order to create a council to study the industry’s impact while signing separate legislation to keep data centers out of certain state business development tax incentive programs, according to Reuters’ report on state-level data center curbs.
The veto does not end the policy fight. It shifts the immediate battleground from a binding statewide freeze to an executive-order process, potential veto override attempts and local land-use decisions. For data center developers, the decision keeps Maine open for projects such as Jay. For critics, it leaves unanswered the central question behind LD 307: whether Maine should set statewide rules before large data centers begin reshaping electricity demand, water use and community planning.
