HARTLEY
SubstationCalifornia
HARTLEY is an electric transmission substation in California. It is classified as distribution (<69 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
Ownership & operation
Operator not catalogued for this substation.
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HARTLEY, 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 |
|---|---|---|---|---|---|---|---|
| SOCRATES 19 | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 53.3 |
| WEST FORD FLAT | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 52.9 |
| BEAR CANYON | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 52.6 |
| QUICKSILVER | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 51.9 |
| BIG GEYSERS | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 51.9 |
| CALISTOGA 199 | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 51.9 |
| NCPA 3&4 | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 51.8 |
| GEYSERS TAP 3 | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 7.6 yrs | 51.8 |
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
Every site and score for HARTLEY substation, California is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.