Union County, Ohio
Union County, Ohio has 652 MW of data centers on record, planned to operating, across 11 records, against 565 MW of generation operating inside the county. The queue adds 496.6 MW of planned generation across 3 projects. That is 2.2% of Ohio's data center MW.
Union County and its neighbors
Counties shaded by data center MW on record, planned to operating. 6 of its 7 neighboring counties have pages of their own. The rest are in the member database.
Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers
more data center MW than operating generation in the county. Union County's own plants cover 86.7% of the load on record, and the planned pipeline adds 496.6 MW.
Data centers by status
11 records, 652 MW
The data center pipeline
11 records list a year online or expected, from 2023 to 2027. The largest expected additions are 192.4 MW listed for 2027.
Data center MW by year online or expected
Records not cancelled, by listed year. 2026 onward is planned or under construction.
View as table
| Year | Records | MW |
|---|---|---|
| 2023 | 1 | 63 |
| 2024 | 3 | 188 |
| 2025 | 4 | 210 |
| 2026 | 0 | 0 |
| 2027 | 3 | 192 |
Who is building in Union
Data center developers by MW on record. Top 1 of 1.
View as table
| Developer | Sites | MW |
|---|---|---|
| Amazon | 11 | 652 |
Power generation in the county
2 plants operate inside Union County, 565 MW of solar. The queue adds 496.6 MW across 3 projects.
Operating and planned generation by technology
MW in Union County
View as table
| Technology | Status | Projects | MW |
|---|---|---|---|
| Solar | Operating | 2 | 565 |
| Solar | Planned | 2 | 446.6 |
| Battery Storage | Planned | 1 | 50 |
Planned generation by listed in-service year
MW. Years before 2026 are past due.
View as table
| Year | Planned projects | MW |
|---|---|---|
| 2026 | 1 | 240 |
| 2027 | 0 | 0 |
| 2028 | 1 | 50 |
| 2029 | 0 | 0 |
| 2030 | 1 | 206.6 |
Union County against its neighbors
Franklin County has the most data center MW among the neighbors, 1.5 GW, more than Union County. 5 of the 6 have more generation operating than data center MW on record.
| County | Data center records | Data center MW | Operating generation MW | Planned generation MW | Data center MW per MW operating |
|---|---|---|---|---|---|
| Franklin County | 35 | 840 | 100x | ||
| Union County this page | 11 | 497 | 1.2x | ||
| Madison County | 0 | 4,510 | 0x | ||
| Hardin County | 0 | 839 | 0x | ||
| Logan County | 0 | 413 | 0x | ||
| Champaign County | 1 | 288 | 0x | ||
| Marion County | 0 | 548 | 0x |
Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.
7 counties shownWhat changed since June 4, 2026
5 projects in Union County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.
Every change in Union County
Project, what changed, technology, MW and the dates that moved, for all 5 changes.
| Project | Change | Technology | MW | Previous date | New date |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.
Every record in Union County
Campus or project name, developer, status, MW, year and the developer’s contacts, for all 16 records. Filter, sort and export to Excel.
| Project or campus | Developer | Status | MW | Year | Contacts |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see every field and can export up to 1,000 rows a month on Solo, unlimited on Unlimited.
Get alerts for Union County
We email you when a data center or power project in Union County is added, changes status, signs an interconnection agreement or slips its date. One email per snapshot, only when something changed.
Open every campus, project and contact in Union County.
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