Rattlesnake Flat
Wind power plant · Adams County, Washington
Nameplate capacity
144 MW
Rank in Washington
#43
of 139 plants
In service since
2020
December 2020
Details
- Primary fuel
- Wind
- Technology
- Onshore Wind Turbine
- Operator
- Rattlesnake Flat, LLC
- County
- Adams County
- Generating units
- 1
- Share of state capacity
- 0.45%
- Rank among wind plants in Washington
- #11 of 23
- EIA plant code
- 62936
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| RAT | Onshore Wind Turbine | 144 MW | 144 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 Washington
| Juniper Canyon I Wind Project | Wind | 151 MW |
| Lund Hill Solar | Solar | 150 MW |
| HF Sinclair Puget Sound Refining | Natural gas | 140 MW |
| Washington Wind | Wind | 136 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 144 MW solar plant and a 144 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 Washington power plants · What Washington actually generates