Maine data center ban vetoed by governor over Jay exemption proposal

Maine Governor Janet Mills vetoed legislation on April 24, 2026, that would have imposed a temporary statewide moratorium on large data centers, citing the bill’s failure to include a carve-out for a specific project in the town of Jay.

The Legislature had passed a measure to halt permits and approvals for data centers with loads above 20 megawatts until November 1, 2027, and to create a Data Center Coordination Council to study environmental and grid impacts. Supporters of the Jay project — a proposed redevelopment of a former paper mill estimated at roughly $550 million — argued the plan would bring jobs and reuse existing industrial infrastructure, and they pressed for an explicit exemption. Governor Mills said she would have signed the bill if that exemption had been included.

The veto reduces the immediate risk to the Jay proposal but leaves broader regulatory uncertainty intact. Business groups, utilities and developers had warned that a moratorium could make Maine an outlier and hinder investment, while environmental and community advocates argued for time to assess the implications of large data center buildouts on power systems and water resources. The debate has therefore created short-term pauses in planning even where projects remain possible.

In the wider context, Maine’s legislative action was one of the first to clear a full state legislature; similar bills have been introduced in about a dozen states amid growing concerns over energy demand from AI and large-scale cloud facilities. Policymakers face the challenge of balancing economic development in rural communities with grid reliability and environmental protection, and Maine’s case is likely to influence regulatory discussions elsewhere.

Analysts expect continued negotiations between state officials, local leaders in Jay, utilities and developers. Governor Mills indicated willingness to support a coordinated study mechanism and to pursue executive steps to establish a council to guide future permitting, suggesting that while a blanket moratorium failed, tighter, state-level oversight and targeted exemptions may shape how and where data centers are built in Maine going forward. Investors and regional planners will watch for follow-up executive actions and any revised legislation that could set precedent for other states.