Substation-Adjacent Datacenter Sites in Ohio
At a glance
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Top substation-adjacent sites in Ohio
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| PIERCE | Substation-Adjacent | Campbell County | 345 kV | 600 MW | 5.2 yrs | 70.2 |
| UNKNOWN113613 | Substation-Adjacent | Lucas County | 345 kV | 600 MW | 5.2 yrs | 69.3 |
| CORRIDOR | Substation-Adjacent | Delaware County | 765 kV | 1,000 MW | 5.2 yrs | 68.3 |
| MIAMI | Substation-Adjacent | Dearborn County | 345 kV | 600 MW | 5.2 yrs | 68.3 |
| UNKNOWN113763 | Substation-Adjacent | Hamilton County | 345 kV | 600 MW | 5.2 yrs | 67.3 |
| SOUTH CANTON 765KV | Substation-Adjacent | Stark County | 765 kV | 1,000 MW | 5.2 yrs | 67.1 |
| FOX | Substation-Adjacent | Cuyahoga County | 345 kV | 600 MW | 5.2 yrs | 66.6 |
| UNKNOWN113660 | Substation-Adjacent | Cuyahoga County | 345 kV | 600 MW | 5.2 yrs | 66.5 |
| UNKNOWN113596 | Substation-Adjacent | Wood County | 345 kV | 600 MW | 5.2 yrs | 66.4 |
| UNKNOWN113618 | Substation-Adjacent | Hamilton County | 345 kV | 600 MW | 5.2 yrs | 66.4 |
| UNKNOWN113672 | Substation-Adjacent | Hamilton County | 345 kV | 600 MW | 5.2 yrs | 66.3 |
| PORT UNION SUBSTATION | Substation-Adjacent | Butler County | 345 kV | 600 MW | 5.2 yrs | 66.0 |
| SOUTH EAST CANTON | Substation-Adjacent | Stark County | 345 kV | 600 MW | 5.2 yrs | 65.9 |
| TAP137572 | Substation-Adjacent | Warren County | 345 kV | 600 MW | 5.2 yrs | 65.9 |
| FOSTER | Substation-Adjacent | Warren County | 345 kV | 600 MW | 5.2 yrs | 65.9 |
| UNKNOWN151647 | Substation-Adjacent | Delaware County | 765 kV | 1,000 MW | 5.2 yrs | 65.9 |
| UNKNOWN113020 | Substation-Adjacent | Warren County | 345 kV | 600 MW | 5.2 yrs | 65.8 |
| UNKNOWN112844 | Substation-Adjacent | Warren County | 345 kV | 600 MW | 5.2 yrs | 65.7 |
| UNKNOWN156850 | Substation-Adjacent | Wood County | 345 kV | 600 MW | 5.2 yrs | 65.7 |
| UNKNOWN113607 | Substation-Adjacent | Cuyahoga County | 345 kV | 600 MW | 5.2 yrs | 65.6 |
| UNKNOWN113629 | Substation-Adjacent | Franklin County | 345 kV | 600 MW | 5.2 yrs | 65.6 |
| HAYDEN | Substation-Adjacent | Franklin County | 345 kV | 600 MW | 5.2 yrs | 65.6 |
| JUNIPER | Substation-Adjacent | Cuyahoga County | 345 kV | 600 MW | 5.2 yrs | 65.5 |
| UNKNOWN113595 | Substation-Adjacent | Butler County | 345 kV | 600 MW | 5.2 yrs | 65.5 |
| TODHUNTER SUBSTATION | Substation-Adjacent | Butler County | 345 kV | 600 MW | 5.2 yrs | 65.3 |
How does Ohio compare with other states for substation-adjacent sites?
With 835 sites, Ohio ranks 20th of the 52 states that have any substation-adjacent candidate sites. Texas leads with 3,635. Nationally, substation-adjacent sites average 57.4/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Ohio averages 53.2, the 31st-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 5.2 years.
Where are the highest-scoring substation-adjacent sites in Ohio?
The top 25 range from 70.2 to 65.3 on the 0–100 DC Readiness Score. They are concentrated in Cuyahoga County (4), Warren County (4), Hamilton County (3) and Butler County (3). By grid region, 25 are in PJM.
County pages: Cuyahoga County · Warren County · Hamilton County · Butler County
What power, fiber and flood exposure do these substation-adjacent sites have?
Of the top 25 substation-adjacent sites in Ohio, 25 have a recorded nearest-substation voltage, with a median of 345 kV; for 25 that substation is rated 230 kV or higher. Their counties have a median of 10 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 6 km. The median interconnection-queue wait in their markets is 5.2 years. 1 of the 4 with a mapped FEMA flood zone sits in a high-risk (A or V) zone. 5 lie within 25 km of a binding transmission constraint.
Frequently asked questions
How many substation-adjacent datacenter sites are in Ohio?
GridCensus catalogs 835 substation-adjacent datacenter candidate sites in Ohio, 2% of the national total for this type (20th of 52 states).
What is a substation-adjacent datacenter site?
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
What is the best substation-adjacent datacenter site in Ohio?
By DC Readiness Score, PIERCE in Campbell County ranks first at 70.2/100, followed by UNKNOWN113613 in Lucas County at 69.3.
Which Ohio counties have the best substation-adjacent sites?
The top 25 substation-adjacent sites in Ohio are concentrated in Cuyahoga County (4), Warren County (4), Hamilton County (3) and Butler County (3).
How does Ohio score for datacenters overall?
All 3,933 scored sites in Ohio average 53.2/100 DC Readiness, the 31st-highest of 52 states, against a national average of 53.0.
More on substation-adjacent sites and Ohio
Substation-Adjacent sites in other states
- Substation-Adjacent sites in Texas· 3,635 sites
- Substation-Adjacent sites in California· 1,573 sites
- Substation-Adjacent sites in Florida· 1,539 sites
- Substation-Adjacent sites in Georgia· 1,530 sites
- Substation-Adjacent sites in Oklahoma· 1,344 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Substation-Adjacent sites in Minnesota· 1,270 sites
- Substation-Adjacent sites in Kentucky· 1,261 sites
Dataset updated . Screening estimates derived from public data sources.
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent datacenter sites in Ohio”, https://gridcensus.com/site-types/substation/ohio (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for Substation-Adjacent sites in Ohio is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.