Datacenter Sites in Mendocino County, California
Mendocino County has 29 scored datacenter candidate sites averaging 40.6/100 DC Readiness, with a catalogued aggregate of 200 MW. FEMA rates local natural-hazard risk as "Relatively High".
At a glance
Mendocino County, California has 29 scored datacenter candidate sites averaging 40.6/100 DC Readiness, about 11% below the California average of 45.4. It ranks 51st of 58 California counties by number of sites and 57th by average score. The top-scoring site is UKIAH at 46.1/100.
Site-selection context for Mendocino County
How does Mendocino County compare with other counties in California?
By number of scored sites, Mendocino County ranks 51st of the 58 California counties with a county page, holding 0.3% of the state's 8,490 sites. Its average DC Readiness of 40.6/100 ranks 57th in the state and is about 23% below the national average of 53.0. Nationally it has the 1305th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 0 score 55 or higher.
What types of datacenter sites are in Mendocino County?
Former Mine sites are the most common (14, 48% of the county's inventory), followed by industrial (9) and substation-adjacent (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 Mendocino County?
Industrial electricity averages 22.93¢/kWh and commercial 29.96¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (48). WRI water stress is high. 4 fiber providers report service in the county. The climate runs 1,000 cooling degree days a year with a mean temperature of 59°F. Land is valued around $6,511 an acre.
By site type
Top datacenter sites in Mendocino County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UKIAH | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.1 |
| CALPELLA | Substation-Adjacent | 115 kV | 100 MW | 7.6 yrs | 46.0 |
| OZ Mendocino | Greenfield | — | — | 7.6 yrs | 43.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.9 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.9 |
| Hopland Pomo Rancheria | Industrial | — | — | 7.6 yrs | 40.8 |
| 2001 Tribal Well | Industrial | — | — | 7.6 yrs | 40.8 |
| Old Stage Road Burn Dump | Industrial | — | — | 7.6 yrs | 40.8 |
| Hopland Rancheria Well 2001 | Industrial | — | — | 7.6 yrs | 40.8 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.2 |
| Ukiah, City Of | Industrial | — | — | 7.6 yrs | 40.2 |
| Ukiah - Leslie St. | Industrial | — | — | 7.6 yrs | 40.2 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.2 |
| Covelo, CA - 26300 Mendocino Pass Rd. | Industrial | — | — | 7.6 yrs | 40.2 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 40.1 |
| Point Arena Air Force Station | Military BRAC | — | — | 7.6 yrs | 40.1 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 39.8 |
| Town Creek Sump Sites | Industrial | — | — | 7.6 yrs | 39.8 |
| UKIAH/MENDOCINO | Federal Excess | — | — | 7.6 yrs | 39.8 |
| Mine Site | Former Mine | — | — | 7.6 yrs | 39.7 |
Every scored site in Mendocino County
All 29 sites, best first.
- UKIAH · 46.1
- CALPELLA · 46.0
- OZ Mendocino · c7597c9c · 43.1
- Mine Site · d4a5354f · 40.9
- Mine Site · 2747966e · 40.9
- Hopland Pomo Rancheria · 40.8
- 2001 Tribal Well · 40.8
- Old Stage Road Burn Dump · 40.8
- Hopland Rancheria Well 2001 · 40.8
- Mine Site · 434f858f · 40.2
- Ukiah, City Of · 40.2
- Ukiah - Leslie St. · 40.2
- Mine Site · bdbb0b4c · 40.2
- Covelo, CA - 26300 Mendocino Pass Rd. · 40.2
- Mine Site · df729bb4 · 40.1
- Mine Site · 64fcb036 · 40.1
- Mine Site · ec51fda8 · 40.1
- Mine Site · f0a7e56f · 40.1
- Mine Site · a130e8bb · 40.1
- Mine Site · 853d3315 · 40.1
- Point Arena Air Force Station · 40.1
- Mine Site · 8c84871e · 39.8
- Town Creek Sump Sites · 39.8
- UKIAH/MENDOCINO · 43b73280 · 39.8
- Mine Site · cc7e3319 · 39.7
- Mine Site · c405e98e · 39.7
- Mine Site · a1a55a2f · 39.6
- Pinoleville Rancheria site · 39.2
- OZ Mendocino · d4b34e60 · 36.7
Mendocino County datacenter FAQ
How many datacenter sites are in Mendocino County?
29 scored datacenter candidate sites, averaging 40.6/100 DC Readiness. That is the 51st-most of 58 California counties with five or more sites.
What is the highest-scoring datacenter site in Mendocino County?
UKIAH scores 46.1/100 DC Readiness, the highest of the 29 scored sites in Mendocino County (a substation-adjacent site).
Does Mendocino County offer datacenter tax incentives?
No datacenter-specific tax incentive is on record for Mendocino County in the GridCensus county dataset.
What is the natural-hazard risk in Mendocino County?
FEMA's National Risk Index rates Mendocino County as "Relatively High" (score 48).
What are industrial electricity rates in Mendocino County?
Average industrial electricity is 22.93¢/kWh and commercial is 29.96¢/kWh in Mendocino County.
More in California
- All datacenter sites in California· 8,490 sites
- Operating datacenters in California
- Electric substations in California
- Los Angeles County· 691 sites · avg 49.8
- Fresno County· 628 sites · avg 43.8
- San Diego· 550 sites · avg 47.7
- Riverside County· 376 sites · avg 45.5
- Yolo County· 363 sites · avg 46.7
- Alameda· 313 sites · avg 49.4
- Former Mine sites in California
- Industrial sites in California
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 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Datacenter candidate sites in Mendocino County, California”, https://gridcensus.com/datacenter-sites/california/mendocino-county (data as of November 13, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for Mendocino County, California 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.