Datacenter Sites in Putnam County, Ohio
Putnam County has 6 scored datacenter candidate sites averaging 55.4/100 DC Readiness, with a catalogued aggregate of 600 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
At a glance
Putnam County, Ohio has 6 scored datacenter candidate sites averaging 55.4/100 DC Readiness, roughly in line with the Ohio average of 53.2. It ranks 82nd of 85 Ohio counties by number of sites and 20th by average score. The top-scoring site is NORTH DELPHOS at 59.9/100.
Site-selection context for Putnam County
Incentive detail: DC sales tax exemption on equipment and electricity (2022 law); JobsOhio grants.
How does Putnam County compare with other counties in Ohio?
By number of scored sites, Putnam County ranks 82nd of the 85 Ohio counties with a county page, holding 0.2% of the state's 3,933 sites. Its average DC Readiness of 55.4/100 ranks 20th in the state and is roughly in line with the national average of 53.0. Nationally it has the 2781st-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 4 score 55 or higher.
What types of datacenter sites are in Putnam County?
Substation-Adjacent sites are the most common (4, 67% of the county's inventory), followed by greenfield (2). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.
What are power cost, hazard, water and fiber conditions in Putnam County?
Industrial electricity averages 8.76¢/kWh and commercial 11.94¢/kWh. FEMA's National Risk Index rates the county "Relatively Moderate" (30). WRI water stress is low. 14 fiber providers report service in the county. The climate runs 900 cooling degree days a year with a mean temperature of 51°F. Land is valued around $8,403 an acre.
By site type
Top datacenter sites in Putnam County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| NORTH DELPHOS | Substation-Adjacent | 138 kV | 100 MW | 5.2 yrs | 59.9 |
| UNKNOWN171445 | Substation-Adjacent | 138 kV | 100 MW | 5.2 yrs | 57.3 |
| TAP171444 | Substation-Adjacent | 138 kV | 100 MW | 5.2 yrs | 57.1 |
| UNKNOWN148486 | Substation-Adjacent | 138 kV | 100 MW | 5.2 yrs | 56.6 |
| Greenfield (UNKNOWN114784 - EAST LEIPSIC S) | Greenfield | 138 kV | 100 MW | 5.2 yrs | 50.8 |
| Greenfield (YELLOW CREEK SUBSTATION - TAP1) | Greenfield | 138 kV | 100 MW | 5.2 yrs | 50.6 |
Every scored site in Putnam County
All 6 sites, best first.
Putnam County datacenter FAQ
How many datacenter sites are in Putnam County?
6 scored datacenter candidate sites, averaging 55.4/100 DC Readiness. That is the 82nd-most of 85 Ohio counties with five or more sites.
What is the highest-scoring datacenter site in Putnam County?
NORTH DELPHOS scores 59.9/100 DC Readiness, the highest of the 6 scored sites in Putnam County (a substation-adjacent site).
Does Putnam County offer datacenter tax incentives?
DC sales tax exemption on equipment and electricity (2022 law); JobsOhio grants.
What is the natural-hazard risk in Putnam County?
FEMA's National Risk Index rates Putnam County as "Relatively Moderate" (score 30).
What are industrial electricity rates in Putnam County?
Average industrial electricity is 8.76¢/kWh and commercial is 11.94¢/kWh in Putnam County.
More in Ohio
- All datacenter sites in Ohio· 3,933 sites
- Operating datacenters in Ohio
- Electric substations in Ohio
- Cuyahoga County· 348 sites · avg 55.2
- Lucas County· 221 sites · avg 53.8
- Hamilton County· 177 sites · avg 56.7
- Lorain· 139 sites · avg 53.5
- Summit County· 129 sites · avg 55.5
- Jefferson County· 125 sites · avg 49.2
- Substation-Adjacent sites in Ohio
- Greenfield sites in Ohio
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, “Datacenter candidate sites in Putnam County, Ohio”, https://gridcensus.com/datacenter-sites/ohio/putnam-county (data as of November 12, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for Putnam County, 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.