Voters in at least 14 Ohio municipalities passed bans or other restrictions on data centres on Tuesday, 3 November 2026, delivering the biggest local backlash yet to the artificial intelligence buildout in the United States. The Ohio data centre bans came in the state with the most such measures on the ballot anywhere in the country, and in many places they passed by overwhelming margins.

Across Ohio, 18 municipalities voted on data-centre measures. Eleven voted on outright bans and seven on added regulation or oversight, according to the Cincinnati Enquirer. At least 14 approved a ban or a restriction. Results remain unofficial pending certification.

Key Points

• At least 14 Ohio municipalities approved data-centre bans or restrictions on 3 November 2026, out of 18 that voted on such measures.
• Ten towns passed outright bans: Hubbard, Sunbury, Pataskala, Urbana, Defiance, Upper Sandusky, Piqua, Granville, Conneaut and Trenton.
• Trenton passed its ban with almost 80 percent, Pataskala with 74 percent and Granville with 82 percent; Ashville voted almost 82 percent to reverse a deal with EdgeConneX.
• Grove City required voter approval for large developments, and Perry required financial guarantees from developers seeking tax breaks.
• Ohio had more data-centre ballot measures than any other state, making the results a national test of the AI buildout.

What Happened

Ohio voters were asked a direct question: should a data centre be allowed here, and on what terms? In at least 14 places, the answer was no, or not without much tighter controls. The result in Oregon, another place that voted on a ban, was still unreported at midnight on 4 November, so the final tally of bans could yet rise.

In Trenton, almost 80 percent passed Issue 17, banning data centres using more than 25 megawatts of electricity. The vote followed an Ohio Supreme Court ruling ordering the council to certify the petition after it had refused to do so in August. It now clouds an Amazon Web Services data centre planned just outside the town of about 14,000 people.

In Pataskala, the ban passed with more than 5,400 votes, or 74 percent. In Granville, it won with 82 percent, by 2,015 votes to 429. Ashville voted almost 82 percent to reverse its council's agreement and negotiations with EdgeConneX for two data centres. Grove City approved, with 55 percent, a charter amendment requiring voter approval for developments using more than 20 megawatts or 500,000 gallons of water a day. Perry passed, with more than 87 percent, a rule requiring developers seeking tax breaks to offer financial guarantees. Wilmington rejected rezoning for a project by around 80 percent across four referendums.

Background and Context

Data centres, the vast buildings full of servers that power AI tools, cloud services and streaming, use enormous amounts of electricity and, in many designs, large volumes of water for cooling. As AI companies race to build capacity, developers have sought sites across the Midwest, drawn by land, power and tax incentives. Ohio became a focal point: before Election Day it already led the nation in data-centre ballot measures, with 21 proposals in more than a dozen jurisdictions.

Opponents raise three questions: will a centre strain the local grid and push up household bills, will it use water communities need for drinking, farming and industry, and will it deliver enough lasting jobs and tax revenue, given that centres employ relatively few people once built? Supporters argue centres bring investment, construction jobs and tax base, and that modern facilities are far more efficient.

Ohio Data Centre Bans: The Results Town by Town

Trenton's vote is perhaps the most consequential, because a ban on centres using more than 25 megawatts effectively rules out the large facilities AI developers typically build, and it arrived only after a legal fight to get the measure on the ballot. Pataskala and Granville delivered similarly emphatic bans, suggesting opposition crossed the usual political divides.

Ashville's vote reversed a council decision rather than banning future centres outright, a direct rebuke to a council strategy and a warning that deals struck without broad public support may not survive a referendum. Grove City and Perry chose conditions over prohibition: a public vote for large projects in Grove City, and financial guarantees tied to tax breaks in Perry. Wilmington blocked a project at the planning stage by rejecting rezoning. Smaller towns including Hubbard, Sunbury, Urbana, Defiance, Upper Sandusky, Piqua and Conneaut also passed outright bans,.

Reactions and What It Means for Developers

No single statement can capture the reaction across 18 municipalities, and results were still unofficial when reported. But the votes themselves are the reaction: residents who organised petitions and campaigned for bans or controls won, in most cases decisively.

For developers, projects already planned in places that have now banned them face uncertainty. The Amazon Web Services proposal near Trenton, the EdgeConneX negotiations in Ashville, and any future large project in Grove City must all be rethought. Developers may argue bans will cost Ohio investment and jobs. Opponents will argue voters have spoken, and developers must now prove, town by town, that a project will not strain power and water or leave residents paying the bill.

Why It Matters

The results matter beyond Ohio for three reasons. First, they are the clearest electoral evidence yet that the AI buildout has a local politics problem: for many voters, the question was not AI safety or competition with China, but what a building will do to their electricity bill, water supply and town. Second, they give campaigners elsewhere a template of petitions, charter amendments, guarantee rules and rezoning referendums that can be copied. Third, they may change how companies plan, forcing them to factor in referendum risk, seek places that actively want a centre, or offer stronger guarantees. See also: data-centre ballot measures in 10 states and Ohio's record early voting.

What Happens Next

County boards will certify results in the coming days and weeks. That rarely overturns margins as large as 74, 80 or 82 percent, but it will confirm final tallies and settle Oregon's outstanding result. Councils must then write bans into local law and decide how they apply to projects already in the pipeline, where legal challenges are possible. Beyond Ohio, expect copycat measures in other states, while companies watch and community groups share campaign tactics. The AI boom is not slowing, but after 3 November 2026, it must win consent town by town.

Frequently Asked Questions

How many Ohio municipalities passed data-centre bans or restrictions?

At least 14, out of 18 that voted on data-centre measures, according to the Cincinnati Enquirer.

Which towns passed outright bans?

Hubbard, Sunbury, Pataskala, Urbana, Defiance, Upper Sandusky, Piqua, Granville, Conneaut and Trenton.

What happened in Trenton, Pataskala and Granville?

Trenton passed Issue 17, banning centres over 25 megawatts, with almost 80 percent. Pataskala passed its ban with 74 percent; Granville with 82 percent, by 2,015 votes to 429.

Are the results final?

No. They are unofficial pending certification, though the large margins make reversals unlikely.

Why are voters concerned about data centres?

Opponents cite electricity demand, water use and whether centres deliver enough lasting jobs and tax revenue. Supporters cite investment, construction work and tax base.