A dozen US states weigh data center curbs; Maine governor vetoes bill

• Maine's proposed moratorium would have halted approvals for data centers requiring more than 20 megawatts of power until October 2027 while a state council analyzed impacts on the grid, electricity bills, air and water
• Twelve other states including Georgia, Maryland, Michigan, New York, Virginia, and Wisconsin have introduced bills targeting data center construction, with moratorium periods ranging from one year to 2030
• The legislative pushback reflects growing local concerns about data centers' strain on power grids, utility rates, water supplies, and environmental impacts as tech companies race to build AI infrastructure

Summary:

Maine Governor Janet Mills vetoed legislation that would have made the state the first in the U.S. to impose a moratorium on large data centers, citing concerns about disrupting jobs from an existing project. The bill, approved by state lawmakers last week, sought to freeze approvals for data centers requiring over 20 megawatts of power until October 2027 while a state council assessed impacts on the electrical grid, utility bills, air, and water.

The veto comes amid a broader trend of growing opposition to data center expansion across the country. Twelve other U.S. states are currently considering similar moratoriums or restrictions on data center development, reflecting local concerns about infrastructure strain and rising costs tied to the AI industry's rapid growth.

Key state actions include:

• Georgia (HB 1012): Moratorium until March 2027
• Maryland (HB 120): Requires co-location with new power generation facilities
• Oklahoma (SB 1488): Freeze until November 2029
• Vermont (S 205): Temporary halt through July 2030
• Virginia (HB 1515): Conditional approval based on grid-interconnection requirements

Most proposals focus on studying environmental impacts, utility rate effects, water supply concerns, and infrastructure capacity before allowing new facilities. Moratorium periods range from one year to nearly four years, with several states establishing regulatory frameworks to govern future development.

Market Implications:

This legislative wave poses significant challenges for tech companies expanding AI infrastructure amid U.S.-China technology competition. Data center developers face increased regulatory uncertainty and potential project delays across multiple states, which could impact deployment timelines for AI capabilities and cloud services. The movement signals rising political resistance to shouldering infrastructure costs associated with the AI boom.