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Datacenter Sites in California

California has 8,490 scored datacenter candidate sites averaging 45.4/100 DC Readiness. Federal Excess parcels lead the inventory (3,212 sites). Most sites interconnect through CAISO. The state's candidate sites carry a catalogued aggregate of 272.4k MW and average a 7.6 yrs interconnection-queue wait.

At a glance

California has 8,490 scored datacenter candidate sites, the 2nd-most of the 50 states, DC and Puerto Rico, averaging 45.4/100 DC Readiness against a national average of 53.0. Its average score ranks 52nd among states. The state also has 158 operating datacenters and 149 internet exchange facilities on record.

8,490
Candidate sites
45.4/100
Avg DC Readiness
272.4k MW
Catalogued capacity
theoretical aggregate
7.6 yrs
Avg queue wait
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≥ 7560–7540–60≤ 40
Top 25 in California

How does California compare with other states for datacenter sites?

By number of scored candidate sites, California ranks 2nd of the 50 states, DC and Puerto Rico (8,490 of 147,272 nationally, 5.8%). Its average DC Readiness of 45.4/100 ranks 52nd and is about 14% below the national average of 53.0. The average interconnection-queue wait at its sites, 7.6-year, is the 52nd-shortest of the group (national 4.2-year).

Across the five headline sub-scores, California is strongest relative to the nation on power availability (35.7 vs 37.4 nationally) and weakest on water (27.2 vs 72.3). Power and speed to power carry 20% of the score each, fiber 12%, water 7% and hazard 6%.

Which counties in California have the most datacenter sites?

Los Angeles County (691 sites, average 49.8), Fresno County (628 sites, average 43.8), and San Diego (550 sites, average 47.7) hold the largest inventories. Together the top 3 account for 22% of the state's scored sites. Marin County has the highest average score among counties with at least 10 sites (52.8/100). 58 counties have five or more scored sites and their own county page.

What kinds of sites and grid regions are in California?

Federal Excess parcels are the largest category (3,212, 38%), followed by industrial (2,201) and substation-adjacent (1,573). Sites span 2 grid regions; CAISO covers 84% of them.

By site type

By grid region

Average sub-score profile

How California's candidate sites score on each DC Readiness dimension (0–100 average).

Power availability
35.7
Speed-to-power
42.6
Fiber
65.7
Water
27.2
Hazard resilience
50.5

Top 25 datacenter sites in California

Ranked by DC Readiness.

Top datacenter sites in California
SiteTypeCountyVoltageCapacityQueue waitScore
TESLA Power ProjectBrownfieldAlameda County500 kV1,322 MW7.6 yrs66.5
Greenfield (WILSON - PIN HOOK)GreenfieldWilson County500 kV1,000 MW7.6 yrs63.5
Greenfield (MONTGOMERY - DAVIDSON)GreenfieldCheatham County500 kV1,000 MW7.6 yrs63.1
Greenfield (MONTGOMERY - WILSON)GreenfieldSumner County500 kV1,000 MW7.6 yrs62.9
STATION L (SCATTERGOOD)Substation-AdjacentLos Angeles County230 kV300 MW7.6 yrs62.9
Greenfield (MONTGOMERY - WILSON)GreenfieldRobertson County500 kV1,000 MW7.6 yrs62.8
STATION E (TOLUCA)Substation-AdjacentLos Angeles County500 kV1,000 MW7.6 yrs62.6
METCALF 1Substation-AdjacentSanta Clara County500 kV1,000 MW7.6 yrs62.4
Broadway (CA)BrownfieldLos Angeles County66 kV167 MW7.6 yrs62.4
Greenfield (JEFFERSON - GREENTOWN)GreenfieldHamilton County765 kV1,000 MW7.6 yrs62.3
MOSS LANDINGSubstation-AdjacentSanta Cruz County500 kV1,000 MW7.6 yrs62.3
INLAND EMPIRESubstation-AdjacentOrange County500 kV1,000 MW7.6 yrs62.3
VALLEYSubstation-AdjacentOrange County500 kV1,000 MW7.6 yrs62.3
Greenfield (MONTGOMERY - DAVIDSON)GreenfieldMontgomery County500 kV1,000 MW7.6 yrs62.1
STATION M(VALLEY)Substation-AdjacentLos Angeles County230 kV300 MW7.6 yrs61.7
Hunters PointBrownfieldSan Mateo County115 kV427 MW7.6 yrs61.3
AIRWAYSubstation-AdjacentLos Angeles County230 kV300 MW7.6 yrs61.3
HUNTINGTON BEACHSubstation-AdjacentOrange County230 kV300 MW7.6 yrs61.0
RINALDISubstation-AdjacentLos Angeles County500 kV1,000 MW7.6 yrs60.9
HAYNESSubstation-AdjacentOrange County230 kV300 MW7.6 yrs60.9
SERRANOSubstation-AdjacentOrange County500 kV1,000 MW7.6 yrs60.8
MIGUELSubstation-AdjacentSan Diego County500 kV1,000 MW7.6 yrs60.6
SAN BERNARDINOSubstation-AdjacentOrange County500 kV1,000 MW7.6 yrs60.2
FUELSubstation-AdjacentOrange County230 kV300 MW7.6 yrs59.8
VINCENTSubstation-AdjacentLos Angeles County500 kV1,000 MW7.6 yrs59.8

Counties in California

58 counties with five or more scored sites.

Los Angeles County691 · 49.8Fresno County628 · 43.8San Diego550 · 47.7Riverside County376 · 45.5Yolo County363 · 46.7Alameda313 · 49.4Placer County291 · 44.8Kern County284 · 45.7San Bernardino County253 · 45.2El Dorado County250 · 43.6Sacramento County240 · 48.6Merced County234 · 43.1Tulare County228 · 42.1Imperial County225 · 41.5Contra Costa County222 · 47.3Orange County190 · 51.6Madera County168 · 44.2Humboldt County156 · 41.4Shasta County152 · 42.6San Joaquin County129 · 47.3Glenn County113 · 40.1Stanislaus County107 · 47.0Tuolumne County100 · 41.5Calaveras County100 · 42.0Colusa County98 · 42.4Tehama County93 · 41.0Siskiyou County88 · 43.5Sonoma County83 · 47.3Santa Clara County82 · 50.6Butte County79 · 44.2Ventura County76 · 47.2Nevada73 · 42.3Napa72 · 43.5San Mateo County70 · 51.9Solano County63 · 47.1Kings County62 · 45.0San Francisco County52 · 48.1Santa Barbara County50 · 46.1Sierra County50 · 44.2Plumas49 · 44.4Trinity County48 · 41.3Monterey45 · 43.3Inyo County45 · 43.7Modoc County44 · 44.2Del Norte County43 · 45.5San Luis Obispo County36 · 49.3Santa Cruz35 · 47.3Yuba County31 · 45.5Lassen County30 · 44.4Sutter County30 · 49.3Mendocino County29 · 40.6Lake County28 · 43.7Amador County26 · 44.2Mono County20 · 44.3Marin County16 · 52.8San Benito County15 · 46.5Mariposa13 · 42.3Alpine County5 · 43.7

Operating datacenters in California

158 operating datacenter facilities in California are on record, the 4th-most of any state. Santa Clara has the largest cluster (37 facilities). The operators with the most facilities here are Equinix (21), Digital Realty (18), CoreSite (12). Footprints are recorded for 98 of them, totalling about 7.4 million square feet.

Santa Clara (37)

Los Angeles (12)

San Jose (12)

San Diego (8)

Sacramento (6)

El Segundo (5)

San Francisco (5)

Sunnyvale (5)

Fremont (3)

Emeryville (2)

Irvine (2)

Modesto (2)

Rancho Cordova (2)

Santa Ana (2)

Anaheim (1)

Burbank (1)

Concord (1)

Fairfield (1)

Fresno (1)

Hawthorne (1)

Hayward (1)

La Mirada (1)

Milpitas (1)

Mountain View (1)

Newark (1)

Oakland (1)

Palmdale (1)

Palo Alto (1)

Petaluma (1)

Romoland (1)

Roseville (1)

San Luis Obispo (1)

Santa Fe Springs (1)

Santa Paula (1)

Stockton (1)

Torrance (1)

Tustin (1)

City not recorded (31)

Internet exchange and peering facilities in California

149 peering and colocation facilities in California are listed in PeeringDB. Los Angeles has the most (37). The best-connected facility hosts 341 networks; the median facility in the state hosts 3 networks.

Los Angeles (37)

Santa Clara (33)

San Diego (11)

San Francisco (11)

Sacramento (4)

Rancho Cordova (3)

Emeryville (2)

Fremont (2)

Modesto (2)

Anaheim (1)

Burbank (1)

Fresno (1)

Hawthorne (1)

Hayward (1)

La Mirada (1)

Milpitas (1)

Mountain View (1)

Newark (1)

Oakland (1)

Palo Alto (1)

Petaluma (1)

Romoland (1)

Roseville (1)

San Luis Obispo (1)

Santa Ana (1)

Santa Fe Springs (1)

Santa Paula (1)

Stockton (1)

Tustin (1)

California datacenter site selection FAQ

How many datacenter sites are in California?

GridCensus catalogs 8,490 scored datacenter candidate sites in California, with an average DC Readiness score of 45.4/100. That is the 2nd-largest inventory of the 50 states, DC and Puerto Rico.

How many operating datacenters are in California?

158 operating datacenter facilities in California are on record, the 4th-most of any state. Santa Clara has the most (37). Equinix operates the most facilities in the state (21).

What is the average interconnection-queue wait in California?

Candidate sites in California average a 7.6-year interconnection-queue wait, with an average queue depth of 222 projects. The national average across all scored sites is 4.2-year, and California has the 52nd-shortest average wait of the 50 states, DC and Puerto Rico.

Which county in California has the most datacenter sites?

Los Angeles County has the most scored candidate sites in California (691), followed by Fresno County (628) and San Diego (550). Among counties with at least 10 sites, Marin County has the highest average DC Readiness (52.8/100).

What kind of datacenter sites are most common in California?

Federal Excess sites are the most common category in California (3,212 sites, 38% of the inventory), and most sites fall within the CAISO grid region.

How many internet exchange facilities are in California?

149 peering and colocation facilities listed in PeeringDB are in California. Los Angeles has the most (37). The best-connected one hosts 341 networks.

Looking for a specific record? The directory lists every scored datacenter site in California, A to Z.

More California infrastructure

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 California”, https://gridcensus.com/datacenter-sites/california (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 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.

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