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Electric Substations in Oregon

554 named substations in Oregon, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.

At a glance

Oregon has 1,414 electric substation records in the HIFLD dataset, 554 of them with a station name (the other 860 are unnamed tap points, risers and line ends). 34 named substations operate at 345 kV or above, 32 of them at 500 kV or more. The highest recorded voltage is 1,000 kV and the median is 115 kV.

How is Oregon's substation network split by voltage?

By maximum voltage, the named substations break down as 32 at 500 kV and above; 2 at 345–499 kV; 76 at 230–344 kV; 351 at 115–229 kV; 67 at 69–114 kV; 11 below 69 kV; 15 withvoltage not recorded. 6% of Oregon's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 115 kV is level with the national median of 115 kV.

How does Oregon compare with other states?

Oregon ranks 7th of 50 states and DC by number of named substations and 12th by named substations at 345 kV or above. It also has 2,430 scored datacenter candidate sites with an average DC Readiness score of 53.1 (national average 53), and an average power sub-score of 39.8 against 37.4 nationally. Most of those sites (2,430) are in the WECC market.

Which substations in Oregon have the highest voltage?

SubstationMax voltageConnected linesLine owner
CELILO1000 kV5BONNEVILLE POWER ADMINISTRATION
ALLSTON500 kV13BONNEVILLE POWER ADMINISTRATION
ALVEY500 kV15BONNEVILLE POWER ADMINISTRATION
BIG EDDY500 kV21BONNEVILLE POWER ADMINISTRATION
BIG EDDY500 kV7BONNEVILLE POWER ADMINISTRATION
BPA TROUTDALE500 kV7BONNEVILLE POWER ADMINISTRATION
BUCKLEY500 kV3BONNEVILLE POWER ADMINISTRATION
BURNS500 kV2PACIFICORP
CALPINE500 kV4BONNEVILLE POWER ADMINISTRATION
CAPTAIN JACK500 kV4BONNEVILLE POWER ADMINISTRATION
COYOTE SPRINGS500 kV5BONNEVILLE POWER ADMINISTRATION
DIXONVILLE 500KV500 kV3PACIFICORP
FORT ROCK500 kV6BONNEVILLE POWER ADMINISTRATION
GRIZZLY500 kV7BONNEVILLE POWER ADMINISTRATION
JOHN DAY 1500 kV2BONNEVILLE POWER ADMINISTRATION
JOHN DAY 2500 kV13BONNEVILLE POWER ADMINISTRATION
KEELER500 kV10BONNEVILLE POWER ADMINISTRATION
KLAMATH CO-GEN500 kV5PACIFICORP
LANE500 kV7BONNEVILLE POWER ADMINISTRATION
MALIN500 kV9PACIFICORP
MARION500 kV7BONNEVILLE POWER ADMINISTRATION
MCNARY500 kV22BONNEVILLE POWER ADMINISTRATION
MERIDIAN500 kV5PACIFICORP
OSTRANDER500 kV5BONNEVILLE POWER ADMINISTRATION
PEARL500 kV5BONNEVILLE POWER ADMINISTRATION
PONDEROSA500 kV5BONNEVILLE POWER ADMINISTRATION
ROUND BUTTE500 kV7PORTLAND GENERAL ELECTRIC CO
SAND SPRINGS500 kV6BONNEVILLE POWER ADMINISTRATION
SANTIAM500 kV9BONNEVILLE POWER ADMINISTRATION
SLATT500 kV7BONNEVILLE POWER ADMINISTRATION
SUMMER LAKE500 kV3PACIFICORP
SYCAN500 kV6BONNEVILLE POWER ADMINISTRATION
DETROIT345 kV3PACIFICORP
HAY CANYON345 kV5PACIFICORP
ALBANY230 kV7BONNEVILLE POWER ADMINISTRATION
BEAVER230 kV5PORTLAND GENERAL ELECTRIC CO
BETHEL230 kV9PORTLAND GENERAL ELECTRIC CO
BIGLOW CANYON230 kV6BONNEVILLE POWER ADMINISTRATION
BLUE LAKE230 kV3PORTLAND GENERAL ELECTRIC CO
BOARDMAN230 kV6BONNEVILLE POWER ADMINISTRATION
CALAPOOYA230 kV3PACIFICORP
CARLTON230 kV4BONNEVILLE POWER ADMINISTRATION
CARVER230 kV7PORTLAND GENERAL ELECTRIC CO
CASCADE STEEL230 kV1BONNEVILLE POWER ADMINISTRATION
CHEMAWA230 kV10BONNEVILLE POWER ADMINISTRATION
CHENOWETH230 kV6BONNEVILLE POWER ADMINISTRATION
CHILOQUIN230 kV4PACIFICORP
CLATSOP230 kV2BONNEVILLE POWER ADMINISTRATION
DALREED230 kV5PACIFICORP
DEAD HEAD230 kV1BONNEVILLE POWER ADMINISTRATION
DEAD HEAD230 kV1BONNEVILLE POWER ADMINISTRATION
DEAD HEAD230 kV1BONNEVILLE POWER ADMINISTRATION
DEAD HEAD230 kV1CITY OF SPRINGFIELD - (OR)
DEAD HEAD230 kV1BONNEVILLE POWER ADMINISTRATION
DIAMOND HILL230 kV4PACIFICORP
DISCOVERY230 kV6NORTHERN WASCO COUNTY PUD
DIXONVILLE 230KV230 kV6PACIFICORP
DRISCOLL230 kV6BONNEVILLE POWER ADMINISTRATION
EL PASO230 kV2IDAHO POWER CO
FAIRVIEW230 kV8BONNEVILLE POWER ADMINISTRATION

Every named substation in Oregon

All 554 named substations, grouped by voltage band.

500 kV and above · 32

345–499 kV · 2

230–344 kV · 76

115–229 kV · 351

69–114 kV · 67

below 69 kV · 11

voltage not recorded · 15

Frequently asked questions

How many electric substations are in Oregon?

HIFLD records 1,414 substations in Oregon, of which 554 carry a station name. That is the 7th-most named substations of any state in the dataset.

What is the highest-voltage substation in Oregon?

CELILO is the highest-voltage named substation in Oregon, at 1,000 kV.

Which substation in Oregon connects the most transmission lines?

MCNARY has the most connected transmission lines of the named substations listed here, with 22 at up to 500 kV.

How many substations in Oregon are 345 kV or higher?

34 of 554 named substations (6%) operate at 345 kV or above, compared with 8% nationally. Oregon ranks 12th of 50 states and DC for named substations at that level.

How many datacenter candidate sites in Oregon are at substations?

844 of the 2,430 scored candidate sites in Oregon are substation sites — locations generated at an existing substation. Scored sites across Oregon average 53.1 on the 0–100 DC Readiness scale, against 53 nationally.

Looking for a specific record? The directory lists every substation in Oregon, A to Z.

More on Oregon, and states with similar counts

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, “Electric substations in Oregon”, https://gridcensus.com/substations/oregon (data as of June 29, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for substations in 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.

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