Maine Governor Vetoes Legislation That Would Have Banned New Data Center Construction

On April 24, 2026, Maine Governor Janet Mills vetoed LD 307, legislation that would have made Maine the first U.S. state to impose a statewide moratorium on large data center construction [1]. The bill, which passed both chambers of the state legislature with bipartisan support, would have frozen permits for any data center drawing 20 megawatts or more until November 2027 [2]. Mills said she supported the moratorium's goals but could not sign a bill that failed to exempt a $550 million redevelopment project in Jay, a western Maine town still recovering from the closure of a paper mill [3].

The veto places Maine at the center of a national debate over whether the AI-fueled data center boom should be slowed, stopped, or better regulated — and who gets to decide.

What the Bill Would Have Done

LD 307, sponsored by Democratic state Representative Melanie Sachs of Freeport, went through multiple iterations in the legislature's Energy, Utilities and Technology Committee before reaching its final form [4]. The bill contained two main components: a temporary moratorium and a study commission.

The moratorium would have prohibited municipalities, state agencies, and quasi-independent entities from issuing approvals for any data center with an electrical load of 20 megawatts or more — roughly enough to power 15,000 homes — until November 1, 2027 [2]. The bill also created the Maine Data Center Coordination Council, charged with evaluating issues related to data centers including ratepayer protection, electric grid reliability, environmental impacts, and responsible economic development. The legislature allocated $95,000 to support the council's work [5].

The Maine House passed the bill 79–62 and the Senate followed 21–13 [6]. Democrats lacked the two-thirds majority needed to override Mills' veto, and Republicans were expected to sustain it — in part because a GOP legislative leader backs a separate data center proposal in Sanford [6].

The Jay Project: A Mill Town's Lifeline or a Convenient Excuse?

The veto hinged on a single project. In the town of Jay (population roughly 4,700), developers have proposed a $550 million data center on the site of the former Androscoggin Mill, an International Paper facility that once employed hundreds [3]. A 2020 boiler explosion preceded the mill's eventual closure in 2023 after Pixelle Specialty Solutions departed, eliminating hundreds of jobs and wiping out an estimated 22 percent of Jay's tax base [7].

The data center proposal would inherit the mill's existing agreement with Central Maine Power for 82 megawatts of capacity [7]. Developers have promised more than 800 construction jobs, at least 100 permanent positions, and substantial property tax revenue [3]. They plan to tear down the gas-fired power generation plant on site and build a solar field, and project that the facility would use far less water than the paper mill did [7].

Mills had asked lawmakers to carve out an exemption for Jay. The House rejected that proposal 115–29 [6]. In her veto message, Mills wrote that the moratorium was "appropriate given the impacts of massive data centers in other states on the environment and on electricity rates," but insisted the Jay project "would not have had a major impact on the electric grid or energy bills" because it reuses existing infrastructure [3][8].

Sachs, the bill's sponsor, called the veto "simply wrong," arguing that "while a veto might protect the proposed data center project in Jay, it poses significant potential consequences for all ratepayers, our electric grid, our environment and our shared energy future" [6].

Maine's Grid: Renewable but Fragile

Maine generates approximately 12,043 gigawatt-hours of electricity annually, with a generation mix tilted toward renewables: roughly 4,200 GWh from hydroelectric, 3,100 GWh from wind, 2,600 GWh from natural gas, and 1,500 GWh from biomass [9].

Source: EIA State Energy Data

Data as of Dec 1, 2025CSV

The state is part of ISO New England, the regional grid operator. As of March 2026, ISO-NE reported "a couple hundred megawatts of large loads in the formal study phase" across New England, with at least one project estimated at approximately 200 megawatts [10]. That represents a modest pipeline compared to the data center rush in Virginia, Texas, or Georgia — but ISO-NE projects that regional electricity consumption will rise roughly 11 percent between 2025 and 2034, driven by heating and transportation electrification even without accounting for major data center additions [10].

Summer peak demand across New England is projected to climb from about 24,800 MW to nearly 26,900 MW, while winter peaks may rise from roughly 20,000 MW to about 26,000 MW [10]. A single large data center — drawing 100 to 200 megawatts continuously, 24 hours a day — represents a fundamentally different kind of load than seasonal residential demand. Nationally, data centers could account for roughly 55 percent of projected U.S. electricity demand growth over the next five years, according to a 2025 Grid Strategies analysis [10].

ISO-NE has not issued formal warnings specific to Maine data center growth. The operator has said that New England "has not seen the level of interest in large data centers that other parts of the country have" [10]. But supporters of the moratorium argued this was precisely the point: Maine should establish a regulatory framework before demand arrives, not after.

The Economic Calculus: Promised Jobs vs. Delivered Reality

Proponents of data center development in Maine point to the Jay project's job and tax revenue promises as evidence that such facilities can rescue struggling communities. Patrick Woodcock of the Maine State Chamber of Commerce characterized the moratorium as "creating a moratorium against a bit of a boogeyman that we have not seen proposed," arguing Maine was preemptively blocking economic opportunity [11].

The town of Jay, Franklin County commissioners, and the regional Chamber of Commerce all lobbied Mills to veto the bill [7]. Dan Diorio of the Data Center Coalition, a national industry group, warned that moratorium legislation "says that the state is willing to essentially put a blanket ban on you" — a message he said would deter investment [12].

But research on data center economic impacts counsels skepticism toward developer promises. A Brookings Institution analysis found that employment benefits of data centers "are variable and often overstated," with a critical gap between temporary construction surges and durable jobs [13]. A review of more than 1,200 U.S. data centers found that even the largest employ fewer than 150 permanent workers, and sometimes as few as 25 [14]. The economic benefits of a typical large data center decline substantially after the construction phase ends [14].

Meanwhile, 67 percent of the roughly 1,500 data centers currently in various stages of development nationwide are planned for rural locations, compared to just 13 percent of existing ones [15]. This shift toward rural siting raises questions about whether communities with limited planning resources and political representation are equipped to negotiate deals that protect their long-term interests.

Who Lobbied and Why

The bill survived significant industry lobbying before reaching Mills' desk. Several lobby firms attempted to write amendments or influence the committee process as LD 307 moved through committee [4]. The Data Center Coalition, which represents major operators including Amazon, Google, and Microsoft, opposed the measure [12].

On the other side, community groups like Slingshot pushed for the moratorium. Dana Colihan of Slingshot framed the argument: "Let's put a pause on unregulated development before communities get wrecked" [11]. Environmental organizations noted that proposed data centers in other Maine communities had met intense local opposition. "Every time a community has tried to get [a data center], the town has rebelled and it has failed," one advocate reported [7].

Labor unions occupied an ambiguous position. Some union leaders expressed concern that a moratorium would prevent Maine's building trades from developing the specialized skills needed to construct data centers, leaving the state behind competitors [4]. Others within the labor movement worried about the temporary nature of construction employment and the modest permanent workforce such facilities typically require.

Montana Towers of the Maine Policy Institute, a free-market think tank, dismissed the moratorium's concerns as "luddite in nature" [12].

The National Wave of Data Center Pushback

Maine's moratorium did not emerge in isolation. In the first six weeks of 2026 alone, more than 300 data center-related bills were introduced across 30 states, up from roughly 200 in all of 2025 [16]. Moratorium bills specifically have appeared in at least 11 states [16].

Source: Good Jobs First / MultiState

Data as of Apr 1, 2026CSV

Georgia's HB 1012 would bar counties and cities from issuing data center permits until March 2027. New York's S9144/A10141 proposes a three-year moratorium on facilities exceeding 20 MW. Vermont's S.205 targets AI data centers above 100 MW with a freeze through July 2030 [16]. At the federal level, Senators Bernie Sanders and Alexandria Ocasio-Cortez introduced S.4214, the AI Data Center Moratorium Act, which would halt new construction nationally until AI safety legislation is enacted [17].

American tech companies have pledged over $600 billion in AI data center spending this year [6]. That wave of capital is colliding with communities that lack the regulatory infrastructure to evaluate what these facilities will mean for their electricity bills, water supplies, and quality of life.

Alternatives That Were Considered — and Rejected

The debate over LD 307 was never simply "moratorium or nothing." During the committee process, lawmakers and stakeholders discussed several alternative regulatory approaches [4][12]:

Tiered permitting tied to renewable energy procurement, which would have allowed data centers that committed to powering their operations with new renewable generation to proceed under expedited review. Water-use caps were discussed in light of the enormous cooling demands of large data centers, though Maine's colder climate makes some facilities viable with air cooling rather than water cooling — the Jay project's developers, for instance, have said their facility would use no water for cooling [7]. Power purchase agreement requirements would have forced data center operators to contract for new electricity generation rather than drawing from the existing grid.

Sachs and other moratorium supporters argued these alternatives were insufficient because Maine lacked the baseline data and regulatory capacity to implement them effectively. The moratorium's purpose, they contended, was to create the space for that analysis to happen. "The tradeoffs have not been shown to be of benefit to our ratepayers, water usage or community benefit in terms of economic activity," Sachs said [12].

Other states have taken different approaches. Washington State secured voluntary pledges from tech companies to bear the costs of new electricity generation needed for their facilities [6]. Whether voluntary commitments prove more durable than statutory requirements remains an open question.

What Mills Did Instead

While vetoing the moratorium, Mills took two related actions. She signed LD 713, a separate bill that prohibits data center projects from accessing Maine's business development tax incentive programs [3]. This measure blocks data centers from receiving the kinds of tax abatements and credits that have drawn criticism in states like Virginia, where data center tax incentives have cost billions in forgone revenue.

Mills also announced she would issue an executive order establishing a council to examine data center impacts in Maine, saying the work "should commence without delay" given the rapid spread of AI technology [8]. Critics noted that an executive-order commission lacks the statutory authority and funding that LD 307's Data Center Coordination Council would have carried, and can be dissolved by any future governor.

Community Siting and Environmental Justice

The pattern of data center siting raises distributional concerns. Nationally, the shift toward rural locations means that communities with smaller populations, lower incomes, and less political representation are increasingly the ones absorbing the environmental and infrastructure costs of facilities whose economic benefits flow primarily to technology companies headquartered in major metropolitan areas [15].

In Maine, the communities that have faced data center proposals — Jay, Sanford, and others — are predominantly rural and have experienced economic decline. Jay's median household income and tax base were already under stress before the mill closure. Sanford, where a separate data center project is reportedly in the 100-to-200 megawatt range, is a former mill town in York County [7].

Supporters of the Jay project argue this is exactly why data centers should be welcomed: these communities have few other options for large-scale economic development. But the Brookings research suggests that communities should focus on "job quality, duration, and what is necessary to make positions attainable for residents" — not just headline investment figures [13].

What Comes Next

Mills' veto does not end the debate. The legislature cannot override her, but the political pressure is unlikely to dissipate. The executive-order commission will operate under a narrower mandate than the statutory council LD 307 would have created. Meanwhile, data center developers now know that Maine's regulatory framework for large facilities remains undefined — which may accelerate proposals rather than slow them.

The Jay project will move forward, subject to existing federal and state environmental permitting requirements [8]. Whether it delivers on its promises of 800 construction jobs and 100 permanent positions — or follows the pattern documented by Brookings of declining benefits after the construction phase — will be watched closely by other Maine communities weighing similar proposals.

Across the country, the fundamental tension remains unresolved: an industry spending hundreds of billions of dollars on infrastructure that demands enormous amounts of electricity, water, and land, arriving in communities that want economic development but lack the tools to ensure they benefit from it. Maine came closer than any state to pressing pause. Whether the veto proves to be a reprieve or a missed opportunity depends on what happens next — in Augusta, in Jay, and in the dozens of statehouses now grappling with the same question.