HOLIDAY
SubstationCalifornia · SOUTHERN CALIFORNIA EDISON
At a glance
HOLIDAY is an electric transmission substation in California, on SOUTHERN CALIFORNIA EDISON's transmission network. It is classified as distribution (<69 kv) and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #313905 | 33 kV | SOUTHERN CALIFORNIA EDISON | IN SERVICE | 1.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HOLIDAY, 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 |
|---|---|---|---|---|---|---|---|
| DEVERS | Substation-Adjacent | CA | Riverside County | 500 kV | 1,000 MW | 7.6 yrs | 57.7 |
| UNKNOWN307724 | Substation-Adjacent | CA | Riverside County | 230 kV | 300 MW | 7.6 yrs | 53.2 |
| MIRAGE | Substation-Adjacent | CA | Riverside County | 230 kV | 300 MW | 7.6 yrs | 53.2 |
| San Gorgonio 1 | Brownfield | CA | Riverside County | 66 kV | 2 MW | 7.6 yrs | 52.1 |
| OZ Riverside | Greenfield | CA | Riverside | — | — | 7.6 yrs | 51.5 |
| OZ Riverside | Greenfield | CA | Riverside | — | — | 7.6 yrs | 51.5 |
| MAYBERRY | Substation-Adjacent | CA | Orange County | 115 kV | 100 MW | 7.6 yrs | 51.5 |
| OZ Riverside | Greenfield | CA | Riverside | — | — | 7.6 yrs | 51.2 |
How does HOLIDAY 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. 1,439 named substations in the state are in HOLIDAY's below 69 kV band (48% of named stations). 1,504 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 HOLIDAY?
The 1 connected line listed above is owned by SOUTHERN CALIFORNIA EDISON. Line voltages range from 33 kV to 33 kV. Their combined recorded length is about 1.4 miles.
How do candidate sites near HOLIDAY score?
The 8 highest-scoring candidate sites within about 25 miles range from 51 to 58 on the 0–100 DC Readiness scale. They fall in Riverside County, Riverside, Orange 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 HOLIDAY substation?
HOLIDAY has a maximum voltage of 33 kV. That places it in the below 69 kV band. The median named US substation in this dataset is 115 kV, so HOLIDAY is below the national midpoint.
How many transmission lines connect to HOLIDAY substation?
1 transmission line terminate at or pass through HOLIDAY in the HIFLD line data. The connected lines listed here run at 33 kV. Together the listed lines cover about 1.4 miles.
Who owns HOLIDAY substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at HOLIDAY belong to SOUTHERN CALIFORNIA EDISON. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is HOLIDAY substation located?
HOLIDAY is in California at 33.8456, -116.5459. The datacenter candidate sites closest to it are in Riverside County, Riverside, Orange County.
Are there datacenter candidate sites near HOLIDAY substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of HOLIDAY. The highest-scoring is DEVERS at 58/100. Across California, the average DC Readiness score is 45.4.
Other 33 kV substations in California
- DESERT OUTPOST· 4 lines
- ARRO· 2 lines
- BURNT MILL· 2 lines
- CANTIL· 2 lines
- DAGGETT· 2 lines
- NORTH MUROC· 2 lines
- PALM VILLAGE· 2 lines
- RUNNING SPRINGS· 2 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, “HOLIDAY substation, California”, https://gridcensus.com/substations/california/holiday-4fe9a4c1 (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 HOLIDAY 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.