COTTONWOOD
Substation-AdjacentSan Bernardino County, California · CAISO
At a glance
COTTONWOOD is a substation-adjacent datacenter candidate site in San Bernardino County, California, scoring 48.9/100 DC Readiness — 44th of 253 scored sites in the county. Its nearest substation is COTTONWOOD (0 mi, 115 kV). It sits in the CAISO grid region and the SOUTHERN CALIFORNIA EDISON CO service territory, where interconnection has averaged 7.6 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Site location
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How does COTTONWOOD compare with other sites in San Bernardino County?
COTTONWOOD ranks 44th of 253 scored candidate sites in San Bernardino County. Its 48.9/100 is roughly in line with the county average of 45.2. It is roughly in line with the California average of 45.4 and roughly in line with the national average of 53.2.
Against the California average, its strongest sub-score is power availability (56 vs 36) and its weakest is water (24 vs 27). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is COTTONWOOD to power, fiber and other datacenters?
The nearest mapped substation, COTTONWOOD, is about 0 miles away and operates at 115 kV. The nearest located transmission bottleneck is 24601_VICTOR _230_24085_LUGO _230_BR_4 _1 (CAISO), 30 miles away. For connectivity, the nearest internet exchange facility is AISO Data Center at 46.2 miles. 15 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is AISO Data Center, 46.2 miles away.
What are the flood, water and hazard risks at COTTONWOOD?
At the county level, FEMA's National Risk Index rates San Bernardino County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in San Bernardino County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ San Bernardino | Greenfield | — | — | 7.6 yrs | 54.1 |
| Newmark Ground Water Contamination (Hallmark Industrial Park) | Brownfield | 33 kV | 2 MW | 7.6 yrs | 53.4 |
| GOLDHILL | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 53.3 |
| CIMA | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 53.3 |
| OZ San Bernardino | Greenfield | — | — | 7.6 yrs | 52.6 |
| PISGAH | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 52.5 |
| COOL WATER | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 52.5 |
| EC Coal San Bernardino County | Greenfield | — | — | 7.6 yrs | 52.5 |
COTTONWOOD: common questions
What is the DC Readiness score of COTTONWOOD?
COTTONWOOD scores 48.9/100 on the GridCensus DC Readiness scale, rated fair. It ranks 44th of 253 scored sites in San Bernardino County. The San Bernardino County average is 45.2 and the California average is 45.4.
What is the nearest substation to COTTONWOOD?
The nearest mapped substation is COTTONWOOD, about 0 miles away, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves COTTONWOOD?
SOUTHERN CALIFORNIA EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is SOUTHERN CALIFORNIA EDISON.
What grid region is COTTONWOOD in?
COTTONWOOD is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is COTTONWOOD from an internet exchange?
The nearest internet exchange facility is AISO Data Center, about 46.2 miles away; 15 fiber providers report service at the location.
Related pages
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 October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “COTTONWOOD, San Bernardino County, CA”, https://gridcensus.com/datacenter-sites/california/san-bernardino-county/cottonwood-63f38d4e (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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