AES COLUMBIA POWER
SubstationWashington · COLUMBIA RURAL ELEC ASSN, INC
At a glance
AES COLUMBIA POWER is an electric transmission substation in Washington, on COLUMBIA RURAL ELEC ASSN, INC's transmission network. It is classified as sub-transmission (115 kv) and connects 2 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 |
|---|---|---|---|---|
| #211311 | 115 kV | COLUMBIA RURAL ELEC ASSN, INC | — | 0.9 mi |
| #212257 | 115 kV | NORTHERN WASCO COUNTY PUD | — | 0.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of AES COLUMBIA POWER, 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 |
|---|---|---|---|---|---|---|---|
| MCNARY | Substation-Adjacent | OR | Benton County | 500 kV | 1,000 MW | 3.5 yrs | 67.6 |
| SACAJAWEA | Substation-Adjacent | WA | Walla Walla County | 500 kV | 1,000 MW | 3.5 yrs | 67.4 |
| CALPINE | Substation-Adjacent | OR | Morrow County | 500 kV | 1,000 MW | 3.5 yrs | 66.3 |
| TAP203128 | Substation-Adjacent | WA | Walla Walla County | 500 kV | 1,000 MW | 3.5 yrs | 65.9 |
| OZ Benton | Greenfield | WA | Benton | — | — | 3.5 yrs | 64.9 |
| FRANKLIN | Substation-Adjacent | WA | Franklin County | 230 kV | 300 MW | 3.5 yrs | 62.9 |
| UNKNOWN202413 | Substation-Adjacent | OR | Benton County | 230 kV | 300 MW | 3.5 yrs | 62.9 |
| UNKNOWN203430 | Substation-Adjacent | OR | Umatilla County | 230 kV | 300 MW | 3.5 yrs | 62.7 |
How does AES COLUMBIA POWER compare with other substations in Washington?
Washington has 2,106 substation records in HIFLD, of which 785 carry a station name; the rest are unnamed tap points, risers and line ends. 515 named substations in the state are in AES COLUMBIA POWER's 115–229 kV band (66% of named stations). 137 sit in a higher band. 34 named substations in Washington operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 115 kV.
Who owns the transmission lines at AES COLUMBIA POWER?
The 2 connected lines listed above are owned by COLUMBIA RURAL ELEC ASSN, INC, NORTHERN WASCO COUNTY PUD. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 1.7 miles.
How do candidate sites near AES COLUMBIA POWER score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 68 on the 0–100 DC Readiness scale. They fall in Benton County, Walla Walla County, Morrow County, Benton. The Washington average across 6,019 scored sites is 51.7. 1,343 of those Washington sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is AES COLUMBIA POWER substation?
AES COLUMBIA POWER has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so AES COLUMBIA POWER is at the national midpoint.
How many transmission lines connect to AES COLUMBIA POWER substation?
2 transmission lines terminate at or pass through AES COLUMBIA POWER in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 1.7 miles.
Who owns AES COLUMBIA POWER substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at AES COLUMBIA POWER belong to COLUMBIA RURAL ELEC ASSN, INC, and others to NORTHERN WASCO COUNTY PUD. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is AES COLUMBIA POWER substation located?
AES COLUMBIA POWER is in Washington at 46.1076, -118.9187. The datacenter candidate sites closest to it are in Benton County, Walla Walla County, Morrow County.
Are there datacenter candidate sites near AES COLUMBIA POWER substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of AES COLUMBIA POWER. The highest-scoring is MCNARY at 68/100. Across Washington, the average DC Readiness score is 51.7.
Other 115 kV substations in Washington
- LAKE TRADITION· 8 lines
- LAKESIDE· 8 lines
- BEVERLY PARK· 7 lines
- ALDERTON· 6 lines
- ANDERSON CANYON· 6 lines
- ANDREW YORK MONITOR & SWITCHYARD· 6 lines
- CHRISTOPHER· 6 lines
- HALLS LAKE· 6 lines
- All named substations in Washington· 785 stations
- Datacenter candidate sites in Washington· 6,019 sites
- Brownfield and retired plant sites in Washington
- 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, “AES COLUMBIA POWER substation, Washington”, https://gridcensus.com/substations/washington/aes-columbia-power-cb6c5c76 (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.
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