Ohio
Data centers in Butler County, Ohio
The Census tracks 2 data center projects in Butler County, Ohio, with 250 MW of published capacity: 1 proposed, 1 under construction. 1 moratorium action recorded.
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How many data centers are in Butler County?
The Census tracks 2 major projects here as of Nov 11, 2026: 1 proposed, 1 under construction. They are in Trenton. The largest by published capacity is Project Mila (250 MW).
Projects
| Project | Status | Capacity | Developer |
|---|---|---|---|
| Project Mila Trenton, Butler County, OH | Under construction | 250 MW | Prologis |
| Amazon Web Services data center campus, Madison and St. Clair townships Butler County, OH | Proposed | — | Amazon Web Services |
Community concerns
Topics raised in public sources about projects here. Each links to the sources on the project page; raised, not validated. All community concerns →
- Electricity rates (1 concern): Project Mila
- Tax incentives (1 concern): Project Mila
- Transparency and NDAs (1 concern): Project Mila
Moratoriums
| Jurisdiction | Action | Length | What the source says |
|---|---|---|---|
| Butler County Ohio · county |
Adopted Jun 2026 |
six months | Six-month moratorium on data centers. WVXUSource excerpt“voted unanimously Tuesday to approve a six-month moratorium on data centers.” |
Recent changes
| Date | What changed | Project |
|---|---|---|
| Nov 3, 2026 | Trenton voters pass Issue 17, barring data centers over 25 MW in city limits, with about 80% (unofficial results, not yet certified); WVXU says it blocks plans for Trenton to annex land for a 1,000 MW Amazon data center WVXU | Amazon Web Services data center campus, Madison and St. Clair townships |
| Nov 3, 2026 | Trenton voters pass Issue 17, a charter amendment barring data centers over 25 MW, with about 80% of the vote (unofficial Butler County Board of Elections results, not yet certified). WVXU says it puts the 250 MW Prologis facility into question; Prologis told WCPO the result does not affect its project, and whether the project has vested rights is unsettled. Work so far is site work WVXU | Project Mila |
| Oct 15, 2026 | AWS holds a community meeting at Edgewood Middle School in Trenton; residents ask about water, workforce, power and backup generators FOX19 | Amazon Web Services data center campus, Madison and St. Clair townships |
| Sep 2026 | Trenton's city attorney notifies Butler County that the city is withdrawing the annexation petition, effective immediately WVXU | Amazon Web Services data center campus, Madison and St. Clair townships |
| Sep 2026 | The withdrawal comes one day before a scheduled Butler County Board of Commissioners public hearing on the annexation WCPO | Amazon Web Services data center campus, Madison and St. Clair townships |
| Sep 2026 | Butler County commissioners accept the withdrawal WCPO | Amazon Web Services data center campus, Madison and St. Clair townships |
| Aug 2026 | Madison Township trustees vote unanimously to reject Trenton's annexation petition WYSO (WVXU story) | Amazon Web Services data center campus, Madison and St. Clair townships |
| Aug 2026 | St. Clair Township also rejects the annexation WYSO (WVXU story) | Amazon Web Services data center campus, Madison and St. Clair townships |
| Jul 2026 | Trenton City Council tables a vote on annexing 600 acres from St. Clair and Madison townships WVXU | Amazon Web Services data center campus, Madison and St. Clair townships |
| Jul 2026 | Residents submit a petition to amend Trenton's charter to prohibit construction of data centers over 25 megawatts WVXU | Project Mila |
| Jul 2026 | Trenton City Council approves a 15-year, 75% property tax abatement agreement and a compensation agreement with Prologis WVXU | Project Mila |
| Jun 2026 | Butler County enacts a six-month data center moratorium covering Madison and five other townships WVXU | Amazon Web Services data center campus, Madison and St. Clair townships |
Butler County data centers: common questions
How many data centers are in Butler County, Ohio?
The Census tracks 2 major data center projects in Butler County as of Nov 11, 2026: 1 proposed, 1 under construction. That covers major sourced projects, not every smaller colocation or enterprise facility.
What is the biggest data center project in Butler County?
By published planned capacity, Project Mila in Trenton, at 250 MW. Its status is under construction.
Is there a data center moratorium in Butler County?
Butler County adopted a data center moratorium (Jun 2026), six months. Details and sources are in the moratorium tracker.
This page collects the county-level record: every tracked project, moratorium and local rule we can source for Butler County. See all Ohio projects or look up projects near your ZIP code.
Cite this page
Last updated Nov 11, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). Data centers in Butler County, Ohio. Retrieved from https://datacentercensus.com/us/ohio/butler-county |
|---|---|
| MLA | “Data centers in Butler County, Ohio.” Data Center Census, Nov 11, 2026, https://datacentercensus.com/us/ohio/butler-county. |
| Link | https://datacentercensus.com/us/ohio/butler-county |
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