TAP305230
SubstationCalifornia · PACIFIC GAS & ELECTRIC COMPANY
At a glance
TAP305230 is an electric transmission substation in California, on PACIFIC GAS & ELECTRIC COMPANY's transmission network. It is classified as distribution (69–115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #303302 | 70 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 6.8 mi |
| #304141 | 70 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 1.1 mi |
| #310646 | 70 kV | PACIFIC GAS & ELECTRIC COMPANY | IN SERVICE | 7.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP305230, 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 |
|---|---|---|---|---|---|---|---|
| COURSEGOLD | Substation-Adjacent | CA | Madera County | 115 kV | 100 MW | 7.6 yrs | 48.4 |
| UNKNOWN302149 | Substation-Adjacent | CA | Tuolumne County | 115 kV | 100 MW | 7.6 yrs | 47.6 |
| OAKHURST | Substation-Adjacent | CA | Madera County | 115 kV | 100 MW | 7.6 yrs | 47.5 |
| SIERRA PACIFIC INDUSTRIES | Substation-Adjacent | CA | Tuolumne County | 115 kV | 100 MW | 7.6 yrs | 47.0 |
| NEW MOCCASIN CR | Substation-Adjacent | CA | Tuolumne County | 115 kV | 100 MW | 7.6 yrs | 46.9 |
| EARLY INTAKE | Substation-Adjacent | CA | Tuolumne County | 115 kV | 100 MW | 7.6 yrs | 46.7 |
| EXCHEQUER | Substation-Adjacent | CA | Mariposa County | 115 kV | 100 MW | 7.6 yrs | 45.5 |
| MARIPOSA | Substation-Adjacent | CA | Mariposa County | 70 kV | 50 MW | 7.6 yrs | 45.0 |
Who owns the transmission lines at TAP305230?
The 3 connected lines listed above are owned by PACIFIC GAS & ELECTRIC COMPANY. Line voltages range from 70 kV to 70 kV. Their combined recorded length is about 15.5 miles.
How do candidate sites near TAP305230 score?
The 8 highest-scoring candidate sites within about 25 miles range from 45 to 48 on the 0–100 DC Readiness scale. They fall in Madera County, Tuolumne County, Mariposa County. The California average across 8,490 scored sites is 45.4. 1,573 of those California sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP305230 substation?
TAP305230 has a maximum voltage of 70 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP305230 is below the national midpoint.
How many transmission lines connect to TAP305230 substation?
3 transmission lines terminate at or pass through TAP305230 in the HIFLD line data. The connected lines listed here run at 70 kV. Together the listed lines cover about 15.5 miles.
Who owns TAP305230 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP305230 belong to PACIFIC GAS & ELECTRIC COMPANY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP305230 substation located?
TAP305230 is in California at 37.5855, -120.0024. The datacenter candidate sites closest to it are in Madera County, Tuolumne County, Mariposa County.
Are there datacenter candidate sites near TAP305230 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP305230. The highest-scoring is COURSEGOLD at 48/100. Across California, the average DC Readiness score is 45.4.
More in California
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TAP305230 substation, California”, https://gridcensus.com/substations/california/tap305230-7bcb12d9 (data as of June 29, 2026).
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 TAP305230 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.