Rattlesnake Flat
Rattlesnake Flat is a 144 MW wind farm in Adams County, Washington, operated by Rattlesnake Flat, LLC. EIA-860M lists 1 generating unit here. Its unit entered service in 2020.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 144 MW
- 144 MW net summer
- Generating units
- 1
- In service
- 2020
- EIA plant ID
- 62936
Where it is
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- County
- Adams County, Washington
- Coordinates
- 46.941, -118.5671
- Balancing authority
- AVA
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Rattlesnake Flat, LLC
- Primary energy source
- Wind
- Technologies
- Onshore Wind Turbine
- Status
- Operating
Rattlesnake Flat: FAQ
- Where is Rattlesnake Flat?
- In Adams County, Washington (WA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Rattlesnake Flat?
- 144 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Rattlesnake Flat?
- EIA-860M names Rattlesnake Flat, LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Rattlesnake Flat LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Rattlesnake Flat, LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Rattlesnake Flat LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Rattlesnake Flat still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.