COTTONWOOD
SubstationCalifornia · AZUSA LIGHT & POWER
COTTONWOOD is an electric transmission substation in California, operated by AZUSA LIGHT & POWER. It is classified as high-voltage (230 kv) and connects 20 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
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #92641 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 33.5 mi |
| #86580 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 71.7 mi |
| #87632 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 33.5 mi |
| #87796 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 71.8 mi |
| #88661 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 33.9 mi |
| #88875 | 230 kV | — | IN SERVICE | 29.6 mi |
| #90042 | 230 kV | — | IN SERVICE | 136.3 mi |
| #81004 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 59.3 mi |
| #81684 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 60.2 mi |
| #81984 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 9.1 mi |
| #86106 | 230 kV | — | IN SERVICE | 10.2 mi |
| #86507 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 48.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of COTTONWOOD, 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 |
|---|---|---|---|---|---|---|---|
| Greenfield (TESLA - TABLE MT.) | Greenfield | CA | Sutter County | 500 kV | 1,000 MW | 5.7 yrs | 57.2 |
| Greenfield (TABLE MT. - VACA-DIXON) | Greenfield | CA | Sutter County | 500 kV | 1,000 MW | 5.7 yrs | 57.2 |
| Greenfield (TESLA - TABLE MT.) | Greenfield | CA | Sutter County | 500 kV | 1,000 MW | 5.7 yrs | 56.9 |
| Greenfield (TABLE MT. - VACA-DIXON) | Greenfield | CA | Sutter County | 500 kV | 1,000 MW | 5.7 yrs | 56.7 |
| TABLE MT. | Substation-Adjacent | CA | Butte County | 500 kV | 1,000 MW | 5.7 yrs | 56.4 |
| Greenfield (TESLA - TABLE MT.) | Greenfield | CA | Sutter County | 500 kV | 1,000 MW | 5.7 yrs | 55.6 |
| HYATT | Substation-Adjacent | CA | Butte County | 230 kV | 300 MW | 5.7 yrs | 55.6 |
| Greenfield (TABLE MT. - VACA-DIXON) | Greenfield | CA | Butte County | 500 kV | 1,000 MW | 5.7 yrs | 55.5 |
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 COTTONWOOD 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.