EAST COUNTY
SubstationCalifornia · SAN DIEGO GAS & ELECTRIC
EAST COUNTY is an electric transmission substation in California, operated by SAN DIEGO GAS & ELECTRIC. It is classified as extra-high-voltage (500 kv) and connects 2 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #85144 | 500 kV | — | IN SERVICE | 31.0 mi |
| #92131 | 500 kV | SAN DIEGO GAS & ELECTRIC | IN SERVICE | 53.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of EAST COUNTY, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| EAST COUNTY | Substation-Adjacent | CA | San Diego County | 500 kV | 1,000 MW | 5.7 yrs | 58.6 |
| Greenfield (SUNCREST - IMPERIAL VALLEY) | Greenfield | CA | Imperial County | 500 kV | 1,000 MW | 5.7 yrs | 54.8 |
| Greenfield (SUNCREST - IMPERIAL VALLEY) | Greenfield | CA | San Diego County | 500 kV | 1,000 MW | 5.7 yrs | 54.5 |
| Greenfield (SUNCREST - IMPERIAL VALLEY) | Greenfield | CA | Imperial County | 500 kV | 1,000 MW | 5.7 yrs | 54.3 |
| Greenfield (IMPERIAL VALLEY - EAST COUNTY) | Greenfield | CA | Imperial County | 500 kV | 1,000 MW | 5.7 yrs | 54.3 |
| Greenfield (SUNCREST - IMPERIAL VALLEY) | Greenfield | CA | San Diego County | 500 kV | 1,000 MW | 5.7 yrs | 53.6 |
| Greenfield (EAST COUNTY - MIGUEL) | Greenfield | CA | San Diego County | 500 kV | 1,000 MW | 5.7 yrs | 53.3 |
| Greenfield (IMPERIAL VALLEY - EAST COUNTY) | Greenfield | CA | Imperial County | 500 kV | 1,000 MW | 5.7 yrs | 53.0 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for EAST COUNTY substation, California. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.