Datacenter Sites in Ontonagon County, Michigan
Ontonagon County has 15 scored datacenter candidate sites averaging 55.7/100 DC Readiness, with a catalogued aggregate of 400 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
At a glance
Ontonagon County, Michigan has 15 scored datacenter candidate sites averaging 55.7/100 DC Readiness, roughly in line with the Michigan average of 55.3. It ranks 64th of 81 Michigan counties by number of sites and 22nd by average score. The top-scoring site is OZ Ontonagon at 58.7/100.
Site-selection context for Ontonagon County
Incentive detail: Personal property tax exemption for eligible DC equipment; MEGA tax credits.
How does Ontonagon County compare with other counties in Michigan?
By number of scored sites, Ontonagon County ranks 64th of the 81 Michigan counties with a county page, holding 0.3% of the state's 5,157 sites. Its average DC Readiness of 55.7/100 ranks 22nd in the state and is roughly in line with the national average of 53.0. Nationally it has the 2019th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 11 score 55 or higher.
What types of datacenter sites are in Ontonagon County?
Substation-Adjacent sites are the most common (8, 53% of the county's inventory), followed by greenfield (5) and former mine (1). 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 Ontonagon County?
Industrial electricity averages 5.90¢/kWh and commercial 14.64¢/kWh. FEMA's National Risk Index rates the county "Relatively Moderate" (25). WRI water stress is low. 6 fiber providers report service in the county. The climate runs 700 cooling degree days a year with a mean temperature of 45°F. Land is valued around $3,563 an acre.
By site type
Top datacenter sites in Ontonagon County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ Ontonagon | Greenfield | — | — | 2.2 yrs | 58.7 |
| EC Coal Ontonagon County | Greenfield | — | — | 2.2 yrs | 58.5 |
| EC Coal Ontonagon County | Greenfield | — | — | 2.2 yrs | 57.7 |
| ROCKLAND | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.9 |
| ONTONAGON | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.8 |
| MASS | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.8 |
| LAKE MINE | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.7 |
| VICTORIA HY | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.7 |
| WHITE PINE VLG | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.4 |
| TAP161609 | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 56.3 |
| BRUCE CROSSING | Substation-Adjacent | 69 kV | 50 MW | 2.2 yrs | 55.9 |
| Bergland Food Store Site Rehabilitation | Industrial | — | — | 2.2 yrs | 52.9 |
| Mine Site | Former Mine | — | — | 2.2 yrs | 52.8 |
| EC FFE Ontonagon County | Greenfield | — | — | 2.2 yrs | 52.6 |
| EC Coal Ontonagon County | Greenfield | — | — | 2.2 yrs | 49.1 |
Every scored site in Ontonagon County
All 15 sites, best first.
- OZ Ontonagon · 58.7
- EC Coal Ontonagon County · 32a4007f · 58.5
- EC Coal Ontonagon County · 67eccc0b · 57.7
- ROCKLAND · 56.9
- ONTONAGON · 56.8
- MASS · 56.8
- LAKE MINE · 56.7
- VICTORIA HY · 56.7
- WHITE PINE VLG · 56.4
- Substation-Adjacent site · 1c55a967 · 56.3
- BRUCE CROSSING · 55.9
- Bergland Food Store Site Rehabilitation · 52.9
- Mine Site · 2d087d01 · 52.8
- EC FFE Ontonagon County · 52.6
- EC Coal Ontonagon County · 41cabfe3 · 49.1
Ontonagon County datacenter FAQ
How many datacenter sites are in Ontonagon County?
15 scored datacenter candidate sites, averaging 55.7/100 DC Readiness. That is the 64th-most of 81 Michigan counties with five or more sites.
What is the highest-scoring datacenter site in Ontonagon County?
OZ Ontonagon scores 58.7/100 DC Readiness, the highest of the 15 scored sites in Ontonagon County (a greenfield site).
Does Ontonagon County offer datacenter tax incentives?
Personal property tax exemption for eligible DC equipment; MEGA tax credits.
What is the natural-hazard risk in Ontonagon County?
FEMA's National Risk Index rates Ontonagon County as "Relatively Moderate" (score 25).
What are industrial electricity rates in Ontonagon County?
Average industrial electricity is 5.90¢/kWh and commercial is 14.64¢/kWh in Ontonagon County.
More in Michigan
- All datacenter sites in Michigan· 5,157 sites
- Operating datacenters in Michigan
- Electric substations in Michigan
- Wayne County· 569 sites · avg 57.9
- Oakland County· 354 sites · avg 57.2
- Kent County· 242 sites · avg 57.7
- Saginaw County· 199 sites · avg 53.0
- Calhoun County· 174 sites · avg 54.4
- Genesee County· 174 sites · avg 54.6
- Substation-Adjacent sites in Michigan
- Greenfield sites in Michigan
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 Ontonagon County, Michigan”, https://gridcensus.com/datacenter-sites/michigan/ontonagon-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 Ontonagon County, Michigan 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.