Maine

Energy/Power is the dominant stressor: the statewide fight centered on large electrical loads, grid reliability, and utility cost allocation, with the bill’s 20-MW threshold and ratepayer protections aimed squarely at power impacts. Maine Public, Maine Legislature PDF Water/Geology is the second-order stressor: opponents repeatedly cited water consumption, and Bangor’s water district supported its local pause to better understand water needs. GovTech

- U.S. Senate: Gov. Janet Mills (D) is a candidate in the June 9 Democratic primary, and her veto of the data-center moratorium became a campaign issue; Maine Public reported that contenders Shenna Bellows (D), Troy Jackson (D), Angus King III (D), Hannah Pingree (D), and Nirav Shah (D) said they would have signed the moratorium, while Mills vetoed it to keep the Jay project alive. Maine Public, Maine Public - No other 2026 federal, statewide, or local race with a clearly documented data-center-specific campaign contrast was identified in the sources reviewed.

LD 307 would have imposed an 18-month moratorium on permits and construction for new data centers using more than 20 MW, but Gov. Janet Mills vetoed it on 2026-04-24 and the veto was sustained on 2026-04-29. Maine Legislature, Maine Public, Politico Bangor adopted a 180-day local moratorium on April 13, 2026, and Scarborough was considering a temporary local pause after a 52-acre proposal as of May 6, 2026. Bangor Daily News, Maine Public After the veto, Mills issued an executive order creating the Maine Data Center Advisory Council to study impacts and make recommendations. Maine Public

LD 307 explicitly directed the state to identify ways to protect ratepayers from rate inflation or other negative financial effects of data centers, including cost-allocation approaches, rate-design changes, impact fees, efficiency standards, energy-supply obligations, and demand-response/load-flexibility tools. Maine Legislature PDF The companion fiscal note says the Data Center Coordination Council would require one-time funding and that PUC implementation costs could flow through utility assessments, but no standalone enacted ratepayer tariff reform was identified in the review. Maine Legislature Fiscal Note LD 713 would exclude data centers from BETE and Dirigo business incentives, adding a tax-incentive/cost-allocation pressure point; GrowSmart Maine supported it. GrowSmart Maine

None identified.

- Jay former Androscoggin mill redevelopment, Jay: proposed roughly $550 million data center redevelopment; governor cited it as a key reason for vetoing the moratorium; status in May 2026 was still a live, host-community-supported project. Politico, Construction Dive - Sanford: proposed approximately 300-MW data center; developers warned the moratorium would kill the plan; still a prominent contested project in March–April 2026. Maine Public, The Maine Monitor - Bangor: not a project itself, but the city enacted a 180-day pause because of sudden development pressure and no pending applications, signaling localized site contestation risk. GovTech, Bangor Daily News

- GrowSmart Maine, which supported LD 307 and LD 713 and publicly argued for community-focused guardrails. GrowSmart Maine - Maine Broadband Coalition, which backed the moratorium in reporting on the bill. Maine Public - Maine Conservation Voters / climate advocates: Maine Public’s coverage of the issue showed climate and ratepayer groups pushing for the pause, though the specific coalition names varied by hearing and article. Maine Public - Bangor water and local planning officials were active in support of the local pause, but not a formal statewide coalition. GovTech

None identified at the state political-surface layer as of May 2026. Talent and workforce dynamics in Maine surface primarily at the sub-state and labor-market level — county and municipal proceedings on named projects, regional building trades council positions, and utility commission workforce testimony — which are out of scope for the tracker's state-political-surface read. Request a full RAIL briefing for sub-state and labor-market analysis.

Emerging / minimal footprint. Maine is not a major hub; as of spring 2026 it had a handful of high-profile proposals and local moratoriums, but no evidence of a large operational cluster comparable to Virginia or Texas. Maine Public

“A moratorium is appropriate given the impacts of massive data centers in other states on the environment and on electricity rates,” Gov. Janet Mills said in her veto statement. Construction Dive

Maine Legislature: LD 307 text and status, Maine Public: veto and override failure, Politico: Mills vetoes data-center moratorium, Maine Public: Bangor local pause, Maine Public: Scarborough considers pause, GrowSmart Maine: LD 713 testimony