JAMES BLACK TAP
SubstationCalifornia · PACIFIC GAS & ELECTRIC COMPANY
JAMES BLACK TAP is an electric transmission substation in California, operated by PACIFIC GAS & ELECTRIC COMPANY. It is classified as high-voltage (230 kv) and connects 3 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 |
|---|---|---|---|---|
| #84969 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 6.9 mi |
| #85776 | 230 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 8.1 mi |
| #86889 | 230 kV | — | IN SERVICE | 5.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of JAMES BLACK TAP, 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 |
|---|---|---|---|---|---|---|---|
| ROUND MOUNTAIN | Substation-Adjacent | CA | Shasta County | 500 kV | 1,000 MW | 5.7 yrs | 61.4 |
| Greenfield (TABLE MT. - ROUND MOUNTAIN) | Greenfield | CA | Shasta County | 500 kV | 1,000 MW | 5.7 yrs | 55.1 |
| Greenfield (TABLE MT. - ROUND MOUNTAIN) | Greenfield | CA | Shasta County | 500 kV | 1,000 MW | 5.7 yrs | 53.9 |
| Greenfield (MALIN - ROUND MOUNTAIN) | Greenfield | CA | Shasta County | 500 kV | 1,000 MW | 5.7 yrs | 53.4 |
| PIT 7 TAP | Substation-Adjacent | CA | Shasta County | 230 kV | 300 MW | 5.7 yrs | 53.3 |
| HATCHET RIDGE WIND | Substation-Adjacent | CA | Shasta County | 230 kV | 300 MW | 5.7 yrs | 52.8 |
| PIT 7 | Substation-Adjacent | CA | Shasta County | 230 kV | 300 MW | 5.7 yrs | 52.8 |
| PIT 5 TAP | Substation-Adjacent | CA | Shasta County | 230 kV | 300 MW | 5.7 yrs | 52.4 |
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 JAMES BLACK TAP 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.