SOUTH BAY
Substation-AdjacentSan Diego, California · CAISO
At a glance
SOUTH BAY is a substation-adjacent datacenter candidate site in San Diego, California, scoring 53.8/100 DC Readiness — 33rd of 550 scored sites in the county. Its nearest substation is SOUTH BAY (0 mi, 138 kV). It sits in the CAISO grid region and the SAN DIEGO GAS & ELECTRIC 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 SOUTH BAY compare with other sites in San Diego?
SOUTH BAY ranks 33rd of 550 scored candidate sites in San Diego. Its 53.8/100 is about 13% above the county average of 47.7. It is about 19% above 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 (58 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 SOUTH BAY to power, fiber and other datacenters?
The nearest mapped substation, SOUTH BAY, is about 0 miles away and operates at 138 kV. The nearest located transmission bottleneck is 22773_BAY BLVD_69.0_22352_IMPRLBCH_69.0_BR_1 _1 (CAISO), 2 miles away. For connectivity, the nearest internet exchange facility is MDC San Diego at 1.6 miles. 19 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is MDC San Diego, 1.6 miles away.
What are the flood, water and hazard risks at SOUTH BAY?
At the county level, FEMA's National Risk Index rates San Diego "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 Diego, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MIGUEL | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 60.6 |
| SUNCREST | Substation-Adjacent | 500 kV | 1,000 MW | 7.6 yrs | 58.0 |
| PENASQUITOS | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.7 |
| FRIARS | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.6 |
| MISSION | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.6 |
| OLD TOWN | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.4 |
| STATION F | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.4 |
| CALPEAK PE 7 | Substation-Adjacent | 230 kV | 300 MW | 7.6 yrs | 57.1 |
SOUTH BAY: common questions
What is the DC Readiness score of SOUTH BAY?
SOUTH BAY scores 53.8/100 on the GridCensus DC Readiness scale, rated fair. It ranks 33rd of 550 scored sites in San Diego. The San Diego average is 47.7 and the California average is 45.4.
What is the nearest substation to SOUTH BAY?
The nearest mapped substation is SOUTH BAY, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves SOUTH BAY?
SAN DIEGO GAS & ELECTRIC CO (investor owned) holds the retail service territory that contains the site; its holding company is SEMPRA ENERGY.
What grid region is SOUTH BAY in?
SOUTH BAY is in the CAISO region. Projects interconnecting there have averaged a 7.6-year wait from queue request to operation.
How far is SOUTH BAY from an internet exchange?
The nearest internet exchange facility is MDC San Diego, about 1.6 miles away; 19 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, “SOUTH BAY, San Diego, CA”, https://gridcensus.com/datacenter-sites/california/san-diego/south-bay-808750f0 (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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