Project Mila
Trenton, Butler County, OH
- Rumored
- Proposed
- Approved
- Under construction
- Operating
Prologis is building Project Mila, a planned 250-megawatt data center with four buildings and an electrical substation on 141 acres in the Trenton Industrial Park, land it bought from the City of Trenton in October 2025. Trenton's planning commission unanimously approved the site plan in March 2026, and City Council approved a 15-year, 75% property tax abatement on the buildings in July 2026. WVXU reports the city expects Amazon Web Services to be the end user, and the Journal-News describes it as an AWS data center campus under construction.
Key facts
Size & schedule
| Planned capacity | 250 MW [9] also stated by the Journal-News (June 2026) and WVXU (July 2026) Source excerpt“Construction is underway on a planned 250-megawatt data center.” |
|---|---|
| Site size | 141 acres [1] WVXU describes the site as more than 140 acres / 140 acres Source excerpt“A California-based real estate company has purchased 141 acres of land in the city of Trenton for a proposed 1 million-square-foot data center.” |
| Floor area | 893,034 sq ft [7] WVXU and WCPO (March 2026) reported about 880,000 sq ft; the 2025 purchase agreement described an approximately 1 million sq ft data center (WCPO/Journal-News); DCD reports four 220,000 sq ft buildings; the Journal-News (Sept. 2026) says almost 900,000 sq ft Source excerpt“The project, led by developer Prologis, calls for a 250-megawatt data center spanning 893,034 square feet across 141 acres” |
| Buildings | 4 [10] plus an electrical substation (WVXU); preliminary conceptual plans released by the city Jan. 6 showed six data center buildings (WCPO, Feb. 2026); the CRA agreement expects Prologis to build at least two buildings with an option for more (Journal-News, June 2026) Source excerpt“Construction is progressing on the almost 900,000-square-foot, four-building Amazon Web Services data center campus on 141 acres within the city of Trenton.” |
| Permanent jobs (promised) | 120 [8] Prologis estimate, by Dec. 31, 2035, with a pledged annual payroll of about $9 million; city officials earlier cited 100-150 full-time jobs (WCPO, 2025-10-29) and WVXU (March 2026) reported a projected 140 jobs Source excerpt“Prologis estimates the project will create 120 new full-time jobs by Dec. 31, 2035.” |
| Target completion | First building 2028; all four buildings by 2029 [4] as reported by DCD from a March 2026 public meeting Source excerpt“Construction on the first building could start later this year for a 2028 launch, with all four buildings complete by 2029.” |
How big is that? Data center sizes compared with football fields and Central Park.
Power
| Utility | Duke Energy [1]Source excerpt“increased costs due to water — which is provided by the city — and electricity — provided by Duke Energy.” |
|---|
Water
| Water source | municipal (City of Trenton system) [3] Prologis statement at a March 2026 public forum Source excerpt“they would pull water from the municipal system and all water used to cool the facility would be disposed of in the city's sewer system.” |
|---|---|
| Cooling | direct evaporative free-air cooling [7] expected water use up to 15.8 million gallons a year; the city earlier said approximately 15 million gallons a year (DCD, quoting the city); Prologis said its design requires water cooling for only 3% of the year (WCPO, March 2026) Source excerpt“The project is expected to use up to 15.8 million gallons of water annually, largely due to a direct evaporative free-air cooling system designed to reduce overall water demand.” |
Money & incentives
| Tax incentives | 75% property tax abatement for 15 years on the value of the data center buildings, under a Community Reinvestment Area agreement [8]Source excerpt“City Council voted Thursday to approve an agreement granting developer Prologis a 15-year, 75% property tax abatement on the value of the planned data center buildings.” |
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| Abatement term | 15 years [8]Source excerpt“City Council voted Thursday to approve an agreement granting developer Prologis a 15-year, 75% property tax abatement on the value of the planned data center buildings.” |
| Payments / community benefits | Compensation agreement with up-front payments of $940,200 to Edgewood City Schools and $59,800 to Butler Tech [8] the Journal-News reports an existing TIF arrangement would direct PILOTs to Edgewood City Schools and Butler Tech; Prologis also paid about $2.5 million to Trenton Water Works and $210,400 for sewer capacity (WVXU) Source excerpt“The developer is paying $940,200 to Edgewood City Schools and $59,800 to Butler Tech.” |
Local decisions & site
| Deciding vote | Trenton City Planning Commission unanimously approved Prologis' site plan (March 2026) [5]Source excerpt“Trenton City Planning Commissioners voted unanimously Monday to approve Prologis' site plan for the 880,000-square-foot development.” |
|---|---|
| Zoning | Industrial General (IG) zoning district (City of Trenton statement) [4] WVXU reports that in November 2025 Council voted to establish an I-T zoning district in anticipation of the data center; in March 2025 the planning commission approved zoning code updates to allow data centers (WCPO) Source excerpt“The project site is located within the City's Industrial General (IG) zoning district,” |
| Nearest homes or schools | City says residential areas are 2,300 feet away; a resident says two houses are within 750-800 feet of the construction zone [2]Source excerpt“He disputes the city's claim that residential areas are 2,300 feet away, saying two houses behind him are within 750-800 feet of the construction zone.” |
Figures are as stated by the cited source. Where sources disagree, each figure is shown.
Timeline
Prologis and the City of Trenton sign a purchase agreement for the land, listed at $55,000 per acre (about $7.7 million for 141 acres) [1]
Trenton's planning commission approves updates to three zoning code ordinances to allow data centers, at the request of a Prologis representative [1]
Prologis's purchase of the city-owned industrial park land closes [1]
Trenton City Council votes to create an I-T zoning district, which the city manager says anticipated the data center [9]
A nearby resident says heavy machinery began breaking ground on the site just before Christmas [2]
Trenton City Planning Commission unanimously approves Prologis' site plan [5]
Residents submit a petition to amend Trenton's charter to prohibit construction of data centers over 25 megawatts [8]
Trenton City Council approves a 15-year, 75% property tax abatement agreement and a compensation agreement with Prologis [8]
Issues raised
- WVXU: "The city expects the data center's end user to be Amazon Web Services." WVXU also describes the site as being prepared for a data center for Amazon Web Services by Prologis [9]
- Trenton voters decide Nov. 3 on a charter amendment banning data centers with more than 25 megawatts of demand; the Journal-News says: "The amendment would not affect the Amazon Web Services data center already under construction in Trenton." Residents' lawsuit led the Ohio Supreme Court to order the measure onto the ballot [10]
- Residents, organized as Woodsdale and Trenton Environmental Resistance (W.A.T.E.R.), have raised concerns about transparency, noise, light, utility bills and environmental impacts [2][5][9]
- A city official signed a non-disclosure agreement for the project; a resident says she had to file a Court of Claims complaint to obtain it [9]
- The site is south of Kennel Road and east of Woodsdale Road in the Trenton Industrial Park, east of Molson Coors' Trenton brewery and near Duke Energy's Woodsdale Substation, which Duke is looking to expand [1][3][4][9]
- Prologis says it will pay for its water use, electricity costs and power system upgrades [3][9]
- The mayor said Trenton's water treatment plant can handle up to 6 million gallons per day with minor improvements, against current city usage of 1.5 million gallons daily; the city has frozen residential water rate increases through 2032, citing revenue from the development [2][9]
- Butler County's June 2026 six-month data center moratorium applies only to six townships under county zoning; Trenton manages its own zoning [6]
Issues are concerns and claims raised by the parties, officials or residents named in the cited sources. They are reported as attributed, not as findings by the Census.
Sources
- 1 million-square-foot data center proposed across 141 acres in TrentonWCPO (Journal-News story by Bryn Dippold) · Oct 29, 2025 · news
- Trenton residents demand transparency as data center construction beginsWCPO · Feb 5, 2026 · news
- Prologis reveals tentative plans for major Trenton data center projectWCPO · Mar 3, 2026 · news
- Prologis details plans for data center campus outside Cincinnati, OhioDatacenterDynamics · Mar 5, 2026 · news
- Trenton commission approves plan for data center, moving project closer to constructionWVXU · Mar 30, 2026 · news
- Butler County Commissioners approve short-term data center moratoriumWVXU · Jun 17, 2026 · news
- What to know about Trenton's proposed data center tax incentivesJournal-News · Jun 22, 2026 · news
- Trenton approves 15-year tax abatement for data centerWVXU · Jul 9, 2026 · news
- Data center in Trenton spurs transparency concernsWVXU · Aug 11, 2026 · news
- Trenton voters will decide on a data center ban: Election 2026Journal-News · Sep 18, 2026 · news
Cite this page
Last updated Sep 24, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). Project Mila. Retrieved from https://datacentercensus.com/dc/prologis-project-mila-trenton-oh |
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| MLA | “Project Mila.” Data Center Census, Sep 24, 2026, https://datacentercensus.com/dc/prologis-project-mila-trenton-oh. |
| Link | https://datacentercensus.com/dc/prologis-project-mila-trenton-oh |
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