Planning Commission recommends stricter Louisville data-center rules 5-3

The draft would govern where data centers could be built and set energy, design, and ratepayer-protection standards.

The Office of Planning wrote the rules after a September 2025 Metro Council resolution.

The regulations were updated in July after thousands of comments.

The July changes increased separation from homes, hospitals, and other sensitive uses.

An Aug. 20 Planning Commission meeting further tightened the draft.

The Sept. 3 draft extends noise and decommissioning rules to data centers of all sizes.

The Sept. 3 vote followed public listening sessions this summer across Jefferson County.

Many of those comments called for stricter rules.

The July changes added firm metrics for green-space requirements.

The projects have drawn local opposition over quality of life, the environment, and health.

Louisville's zoning code does not address modern hyperscale data centers.

The code classifies data centers as telecommunications hotels under older rules.

Hyperscale data centers can use enough energy for hundreds of thousands of homes.

Rising AI use is driving very large, power-intensive data centers.

The projects tout large tax benefits for host communities.

The Kentucky Resources Council and others have called for stricter rules than the Sept. 3 draft.

Those advocates want the rules to apply regardless of size, plus stricter noise limits and more health and environmental information.

Construction is underway on Jefferson County's first hyperscale data center on Camp Ground Road.

Jefferson County's 12 suburban cities with zoning authority can adopt, amend, or decline the rules.

The first Camp Ground Road phase is expected to operate in late 2026.

The project is a joint venture of Poe Companies and PowerHouse Data Centers.

The recommendation also goes to Jefferson County's 12 suburban cities with zoning authority.

Developers would have to show new facilities will not shift costs to existing ratepayers.

The data-center rules have been debated for months.

The city then proposed stricter rules, including a 500-foot buffer from homes, hospitals, nursing homes, child-care centers, and schools.

Developers would have to pay for required infrastructure upgrades.

Data centers that do not meet listed exceptions would need a public hearing and a conditional-use permit.

The draft would set noise standards and buffering for generators and other equipment.

Applicants would have to disclose the company that would own and use the development.

The draft would require environmentally low-impact construction and site design.

Generator testing would be limited to once a week between 8 a.m. and 5 p.m., with regular use only in an emergency.

Construction would have to pay prevailing wages.

Gas turbines and co-located power plants would not be allowed as part of a data-center use.

Before Thursday's vote, the commission added a conditional-use permit for data centers over 50,000 square feet in M-1.

The draft adds accessory-data-center limits meant to block a loophole for larger facilities.

Accessory data centers would be limited to the lesser of 25,000 square feet or 49.9 percent of floor area.

The commission added more detailed noise-study requirements for data-center applications.

Power plants could still be reviewed separately under existing zoning rules.

The draft continues to encourage green-energy generation.

Louisville will not accept or process new data-center proposals for 180 days.

Louisville hosted four public meetings on the proposal since the end of July.

Residents could speak for three minutes at those sessions.

The commission would require nearly all new data centers to go through rezoning, with public comment and a Metro Council vote.

The commission vets Land Development Code changes and recommends them to Metro Council, which has the final say.

The commission is mainly made up of local realtors and business leaders.

A majority of residents in public forums and city surveys said they do not want any data centers in Jefferson County.

Before the vote, Commissioner Jim Mims recounted public hearings and survey responses about data-center concerns.

The commission is recommending stricter rules than Mayor Greenberg's administration proposed.

Louisville officials are using that size cap to define hyperscale facilities.

The commission also wants to keep data centers a quarter-mile from hazardous or nuisance properties.

No Data Center 502 advocates attended Thursday's commission meeting.

No Data Center 502 has repeatedly protested Mayor Greenberg over data centers.

That committee is expected to meet Sept. 15 at 1 p.m. at City Hall.

District 9 Democrat Andrew Owen heads the Planning and Zoning Committee.

Those committee meetings do not include time for residents to speak.

Committee meetings are generally kept to an hour or less.