COLISEUM
SubstationOregon
At a glance
COLISEUM is an electric transmission substation in Oregon. It is classified as unclassified and connects 0 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
No owner is recorded for the lines that connect here.
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of COLISEUM, 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 |
|---|---|---|---|---|---|---|---|
| WREN | Substation-Adjacent | OR | Benton County | 230 kV | 300 MW | 3.5 yrs | 63.4 |
| ALBANY | Substation-Adjacent | OR | Benton County | 230 kV | 300 MW | 3.5 yrs | 63.3 |
| FRY | Substation-Adjacent | OR | Benton County | 230 kV | 300 MW | 3.5 yrs | 63.0 |
| Corvallis Municipal Airport | Brownfield | OR | Benton | — | 0 MW | 3.5 yrs | 62.9 |
| SALEM | Substation-Adjacent | OR | Polk County | 230 kV | 300 MW | 3.5 yrs | 62.8 |
| DIAMOND HILL | Substation-Adjacent | OR | Lane County | 230 kV | 300 MW | 3.5 yrs | 62.7 |
| BETHEL | Substation-Adjacent | OR | Marion County | 230 kV | 300 MW | 3.5 yrs | 62.0 |
| UNKNOWN202662 | Substation-Adjacent | OR | Marion County | 230 kV | 300 MW | 3.5 yrs | 61.8 |
How do candidate sites near COLISEUM score?
The 8 highest-scoring candidate sites within about 25 miles range from 62 to 63 on the 0–100 DC Readiness scale. They fall in Benton County, Benton, Polk County, Lane County. 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
How many transmission lines connect to COLISEUM substation?
0 transmission lines terminate at or pass through COLISEUM in the HIFLD line data.
Where is COLISEUM substation located?
COLISEUM is in Oregon at 44.5622, -123.2794. The datacenter candidate sites closest to it are in Benton County, Benton, Polk County.
Are there datacenter candidate sites near COLISEUM substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of COLISEUM. The highest-scoring is WREN at 63/100. Across Oregon, the average DC Readiness score is 53.1.
More in Oregon
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, “COLISEUM substation, Oregon”, https://gridcensus.com/substations/oregon/coliseum-5ce031d8 (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 COLISEUM 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.