Diamond Spring, LLC
Wind power plant · Johnston County, Oklahoma
Nameplate capacity
304 MW
Rank in Oklahoma
#26
of 147 plants
In service since
2020
December 2020
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- ALLETE Clean Energy
- County
- Johnston County
- Generating units
- 1
- Share of state capacity
- 0.83%
- Rank among wind plants in Oklahoma
- #4 of 70
- EIA plant code
- 63327
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 46001 | Onshore Wind Turbine | 304 MW | 304 MW | 2020 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Oklahoma
| Spring Creek Energy Center | Natural gas | 346 MW |
| Mooreland | Natural gas | 305 MW |
| Caddo Wind | Wind | 303 MW |
| Seven Cowboy Wind Project, LLC | Wind | 302 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 304 MW solar plant and a 304 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Oklahoma power plants · What Oklahoma actually generates