LAKE CITY
SubstationCalifornia · SURPRISE VALLEY ELECTRIFICATION CORPORATION
At a glance
LAKE CITY is an electric transmission substation in California, on SURPRISE VALLEY ELECTRIFICATION CORPORATION'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 |
|---|---|---|---|---|
| #303210 | 69 kV | SURPRISE VALLEY ELECTRIFICATION CORPORATION | IN SERVICE | 17.7 mi |
| #303245 | 69 kV | SURPRISE VALLEY ELECTRIFICATION CORPORATION | IN SERVICE | 13.1 mi |
| #306032 | 69 kV | SURPRISE VALLEY ELECTRIFICATION CORPORATION | IN SERVICE | 19.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LAKE CITY, 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 |
|---|---|---|---|---|---|---|---|
| WARNER | Substation-Adjacent | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 51.1 |
| East Side Grange # 583 | Industrial | OR | Lake County | — | — | 3.5 yrs | 47.3 |
| TAP203364 | Substation-Adjacent | CA | Modoc County | 115 kV | 100 MW | 7.6 yrs | 46.1 |
| Greenfield (ALTRUS - None) | Greenfield | CA | Modoc County | 230 kV | 300 MW | 7.6 yrs | 44.7 |
| UNKNOWN304321 | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.6 |
| LIKELY | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.6 |
| CEDARVILLE JUNCTION | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.6 |
| CEDARVILLE | Substation-Adjacent | CA | Modoc County | 69 kV | 50 MW | 7.6 yrs | 44.3 |
How does LAKE CITY compare with other substations in California?
California has 4,260 substation records in HIFLD, of which 3,003 carry a station name; the rest are unnamed tap points, risers and line ends. 379 named substations in the state are in LAKE CITY's 69–114 kV band (13% of named stations). 1,125 sit in a higher band. 44 named substations in California operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 69 kV.
Who owns the transmission lines at LAKE CITY?
The 3 connected lines listed above are owned by SURPRISE VALLEY ELECTRIFICATION CORPORATION. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 49.7 miles.
How do candidate sites near LAKE CITY score?
The 8 highest-scoring candidate sites within about 25 miles range from 44 to 51 on the 0–100 DC Readiness scale. They fall in Modoc County, Lake 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 LAKE CITY substation?
LAKE CITY has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so LAKE CITY is below the national midpoint.
How many transmission lines connect to LAKE CITY substation?
3 transmission lines terminate at or pass through LAKE CITY in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 49.7 miles.
Who owns LAKE CITY substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at LAKE CITY belong to SURPRISE VALLEY ELECTRIFICATION CORPORATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is LAKE CITY substation located?
LAKE CITY is in California at 41.6135, -120.1820. The datacenter candidate sites closest to it are in Modoc County, Lake County.
Are there datacenter candidate sites near LAKE CITY substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of LAKE CITY. The highest-scoring is WARNER at 51/100. Across California, the average DC Readiness score is 45.4.
Other 69 kV substations in California
- SMARTSVILLE· 8 lines
- EL CAJON· 6 lines
- RIVERSIDE· 6 lines
- ROSE CANYON· 6 lines
- BERNARDO· 5 lines
- DEL MAR· 5 lines
- BORDER· 4 lines
- CENTERVILLE· 4 lines
- All named substations in California· 3,003 stations
- Datacenter candidate sites in California· 8,490 sites
- Brownfield and retired plant sites in California
- Substations by state
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, “LAKE CITY substation, California”, https://gridcensus.com/substations/california/lake-city-44d375b7 (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 LAKE CITY 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.