Grijalva Extension
IndustrialOrange County, California · CAISO
At a glance
Grijalva Extension is an industrial datacenter candidate site in Orange County, California, scoring 46.4/100 DC Readiness — 175th of 190 scored sites in the county. 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.
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 Grijalva Extension compare with other sites in Orange County?
Grijalva Extension ranks 175th of 190 scored candidate sites in Orange County. Its 46.4/100 is about 10% below the county average of 51.6. It is roughly in line with the California average of 45.4 and about 13% below the national average of 53.2.
Against the California average, its strongest sub-score is fiber connectivity (83 vs 66) and its weakest is power availability (30 vs 36). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Grijalva Extension to power, fiber and other datacenters?
The nearest located transmission bottleneck is 22640_PENDLETN_69.0_22708_SANLUSRY_69.0_BR_1 _1 (CAISO), 46 miles away. For connectivity, the nearest internet exchange facility is OCDC Orange County Datacenter Santa Ana at 4.7 miles. 17 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is OCDC Orange County Datacenter Santa Ana, 4.7 miles away.
What are the flood, water and hazard risks at Grijalva Extension?
At the county level, FEMA's National Risk Index rates Orange 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 Orange County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| INLAND EMPIRE | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 62.3 |
| VALLEY | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 62.3 |
| HUNTINGTON BEACH | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 61.0 |
| HAYNES | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 60.9 |
| SERRANO | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 60.8 |
| SAN BERNARDINO | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 60.2 |
| FUEL | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 59.8 |
| MIRA LOMA | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 59.2 |
Grijalva Extension: common questions
What is the DC Readiness score of Grijalva Extension?
Grijalva Extension scores 46.4/100 on the GridCensus DC Readiness scale, rated fair. It ranks 175th of 190 scored sites in Orange County. The Orange County average is 51.6 and the California average is 45.4.
Which electric utility serves Grijalva Extension?
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 Grijalva Extension in?
Grijalva Extension is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is Grijalva Extension from an internet exchange?
The nearest internet exchange facility is OCDC Orange County Datacenter Santa Ana, about 4.7 miles away; 17 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, “Grijalva Extension, Orange County, CA”, https://gridcensus.com/datacenter-sites/california/orange-county/grijalva-extension-aab2403b (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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