Brownfield & Retired Power Plant Sites in Oklahoma
22 catalogued brownfield and retired-generation sites in Oklahoma, listed by former capacity. Each carries an existing utility-scale grid interconnection that a new datacenter load may be able to re-use.
At a glance
What kinds of former sites are in Oklahoma?
By former use, the list includes 15 natural gas, 4 coal, 1 oil, 1 RCRA hazardous-waste, 1 manufacturing. Recorded retirement dates run from September 2002 to December 2024, with 11 retirements in 2015 or later. 20 of 22 sites with a measured distance sit within 2 miles of a transmission substation.
How does Oklahoma compare with other states?
Oklahoma ranks 30th of 50 states and DC by number of brownfield and retired-generation sites, out of 2,085 nationally. By recorded capacity (4,191 MW) it ranks 24th, against 289,280 MW across all states. The state also has 3,723 scored datacenter candidate sites, 5 of them classed as brownfield sites, averaging 52.8 on the 0–100 DC Readiness scale.
Where in Oklahoma are these sites?
- Kay County · 2
- Payne County · 2
- Noble County · 1
- Choctaw County · 1
- Mayes County · 1
- Canadian County · 1
- Rogers County · 1
- Oklahoma County · 1
- Muskogee County · 1
- Tulsa County · 1
- Caddo County · 1
- Murray County · 1
- Garfield County · 1
- Okfuskee County · 1
- Comanche County · 1
- Seminole County · 1
- Woodward County · 1
- Osage County · 1
All brownfield and retired plant sites in Oklahoma
| Site | Former use | Capacity | Retired | County |
|---|---|---|---|---|
| Sooner | coal | 950 MW | — | Noble |
| Hugo | coal | 750 MW | — | Choctaw |
| GREC | coal | 540 MW | 2020-12-01 | Mayes |
| Mustang | gas | 531 MW | 2017-12-01 | Canadian |
| Northeastern | coal | 473 MW | 2016-04-01 | Rogers |
| Horseshoe Lake | gas | 190 MW | 2024-01-01 | Oklahoma |
| Muskogee | gas | 173 MW | 2010-12-01 | Muskogee |
| Tulsa | gas | 95 MW | 2012-02-01 | Tulsa |
| Anadarko Plant | gas | 85 MW | 2024-12-01 | Caddo |
| Arbuckle | gas | 73 MW | 2002-09-01 | Murray |
| Conoco | gas | 66 MW | 2006-06-01 | Kay |
| Enid | gas | 60 MW | 2012-12-01 | Garfield |
| Weleetka | gas | 53 MW | 2019-03-01 | Okfuskee |
| Ponca | gas | 48 MW | 2022-12-01 | Kay |
| Ft. Sill Energy Center | gas | 36 MW | — | Comanche |
| Boomer Lake Station | gas | 29 MW | 2022-03-01 | Payne |
| Seminole (OK) | gas | 23 MW | 2015-12-01 | Seminole |
| Woodward | gas | 11 MW | 2012-12-01 | Woodward |
| Tulsa LFG LLC | gas | 3 MW | 2021-05-01 | Osage |
| Stillwater Water Treatment Plant | oil | 2 MW | 2022-03-01 | Payne |
| Altus Air Force Base | rcra | 0 MW | — | — |
| Guthrie Green | manufacturing | — | — | — |
Frequently asked questions
How many retired power plants are in Oklahoma?
GridCensus lists 20 retired power plant sites in Oklahoma from EIA-860 retirement records. 17 have a recorded retirement date, 11 of them in 2015 or later.
What is the largest retired power plant or brownfield site in Oklahoma?
Sooner in Red Rock is the largest by recorded capacity, at 950 MW. It is followed by Hugo (750 MW) and GREC (540 MW).
Which power plant in Oklahoma retired most recently?
Anadarko Plant has the latest recorded retirement date in the state, December 2024, with 84.6 MW of capacity.
Which county in Oklahoma has the most brownfield and retired plant sites?
Kay County has the most, with 2, followed by Payne County with 2.
How many EPA brownfield sites in Oklahoma have completed cleanup?
2 of the 2 EPA-tracked sites listed for Oklahoma are recorded as cleanup complete.
Looking for a specific record? The directory lists every brownfield site, A to Z.
More on Oklahoma, and states with similar counts
- Datacenter candidate sites in Oklahoma· 3,723 sites
- Electric substations in Oklahoma· 89 named
- Brownfield candidate sites nationwide
- Brownfield sites by state
- Brownfield sites in New Mexico· 22 sites
- Brownfield sites in Alabama· 21 sites
- Brownfield sites in Tennessee· 22 sites
- Brownfield sites in Rhode Island· 21 sites
About this data
Source: EIA-860 retired generating units and EPA RE-Powering America's Land contaminated-site records, as published March 6, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Brownfield and retired power plant sites in Oklahoma”, https://gridcensus.com/brownfield-sites/oklahoma (data as of March 6, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for brownfield sites in Oklahoma 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.