LA GRANDE
SubstationOregon · OREGON TRAIL ELECTRIC CO-OP
At a glance
LA GRANDE is an electric transmission substation in Oregon, on OREGON TRAIL ELECTRIC CO-OP's transmission network. It is classified as high-voltage (230 kv) and connects 4 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 |
|---|---|---|---|---|
| #200888 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 44.9 mi |
| #212198 | 69 kV | OREGON TRAIL ELECTRIC CO-OP | — | 0.1 mi |
| #212199 | 69 kV | OREGON TRAIL ELECTRIC CO-OP | — | 1.3 mi |
| #212403 | 69 kV | — | — | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LA GRANDE, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN202147 | Substation-Adjacent | OR | Union County | 230 kV | 300 MW | 3.5 yrs | 59.5 |
| LA GRANDE | Substation-Adjacent | OR | Union County | 230 kV | 300 MW | 3.5 yrs | 59.5 |
| OZ Union | Greenfield | OR | Union | — | — | 3.5 yrs | 57.5 |
| UNKNOWN205322 | Substation-Adjacent | OR | Union County | 115 kV | 100 MW | 3.5 yrs | 55.1 |
| DEAD HEAD | Substation-Adjacent | OR | Union County | 115 kV | 100 MW | 3.5 yrs | 54.9 |
| COVE AVENUE | Substation-Adjacent | OR | Union County | 69 kV | 50 MW | 3.5 yrs | 53.1 |
| TAP205324 | Substation-Adjacent | OR | Union County | 69 kV | 50 MW | 3.5 yrs | 53.1 |
| TAP205328 | Substation-Adjacent | OR | Union County | 69 kV | 50 MW | 3.5 yrs | 53.0 |
How does LA GRANDE compare with other substations in Oregon?
Oregon has 1,414 substation records in HIFLD, of which 554 carry a station name; the rest are unnamed tap points, risers and line ends. 76 named substations in the state are in LA GRANDE's 230–344 kV band (14% of named stations). 34 sit in a higher band. 34 named substations in Oregon operate at 345 kV or above. The highest voltage recorded in the state is 1,000 kV, and the state median is 115 kV.
Who owns the transmission lines at LA GRANDE?
The 4 connected lines listed above are owned by BONNEVILLE POWER ADMINISTRATION, OREGON TRAIL ELECTRIC CO-OP. Line voltages range from 69 kV to 230 kV. Their combined recorded length is about 46.5 miles.
How do candidate sites near LA GRANDE score?
The 8 highest-scoring candidate sites within about 25 miles range from 53 to 60 on the 0–100 DC Readiness scale. They fall in Union County, Union. The Oregon average across 2,430 scored sites is 53.1. 844 of those Oregon sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is LA GRANDE substation?
LA GRANDE has a maximum voltage of 230 kV and a minimum of 69 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so LA GRANDE is above the national midpoint.
How many transmission lines connect to LA GRANDE substation?
4 transmission lines terminate at or pass through LA GRANDE in the HIFLD line data. The connected lines listed here run at 230 kV, 69 kV. Together the listed lines cover about 46.5 miles.
Who owns LA GRANDE substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at LA GRANDE belong to OREGON TRAIL ELECTRIC CO-OP, and others to BONNEVILLE POWER ADMINISTRATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is LA GRANDE substation located?
LA GRANDE is in Oregon at 45.3119, -118.0719. The datacenter candidate sites closest to it are in Union County, Union.
Are there datacenter candidate sites near LA GRANDE substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of LA GRANDE. The highest-scoring is UNKNOWN202147 at 60/100. Across Oregon, the average DC Readiness score is 53.1.
Other 230 kV substations in Oregon
- MCLOUGHLIN· 14 lines
- SHERWOOD· 12 lines
- PAC TROUTDALE· 11 lines
- CHEMAWA· 10 lines
- KLONDIKE SCHOOLHOUSE· 10 lines
- REDMOND· 10 lines
- SAINT MARYS· 10 lines
- BETHEL· 9 lines
- All named substations in Oregon· 554 stations
- Datacenter candidate sites in Oregon· 2,430 sites
- Brownfield and retired plant sites in Oregon
- 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, “LA GRANDE substation, Oregon”, https://gridcensus.com/substations/oregon/la-grande-8508d568 (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 LA GRANDE substation, Oregon 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.