Rattlesnake Flat

OperatingWind

Ranked #11 of 24 Wind plants in WA#555 of 1442 nationally

144 MW Wind operating in Adams, WA — Avista Corporation

EIAGEMWD

144 MW

Nameplate Capacity

Generators

unit

Onshore Wind Turbine

Technology

2020

Operating Since

Location

Coordinates

46.8986, -118.4252

County

Adams, WA

Nearby Plants

Adams Nielson Solar
Solar19.2 MW · 17.2 km

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	Rattlesnake Flat, LLC	Clearway Energy Group LLC [100%]	—
Owner(s)	Rattlesnake Flat, LLC	Clearway Energy	—
Status	Operating	operating	—

Ownership Chain

About

Rattlesnake Flat is a 144 MW wind power plant located in Adams County, Washington. The facility began operating in 2020 and is owned by Clearway Energy and operated by Rattlesnake Flat, LLC. It utilizes a single generator comprised of onshore wind turbine technology. The plant uses Siemens Gamesa Renewable Energy SG-2.3-108 turbines, with a rotor diameter of 108 meters and a hub height of 80 meters. Rattlesnake Flat ranks as the 11th largest wind farm in Washington state out of 17, and 548th nationally out of 734.

The plant's latest annual generation was 414,699 MWh, resulting in a capacity factor of 32.8%. Rattlesnake Flat operates within the Avista Corporation balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates a power purchase agreement (PPA) price of $30.1 per MWh.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Wikidata Global Energy Monitor

Engineering & Generators