Localisation  

Country	USA
County/Zone	Washington
City	Columbia - Dayton
Wind farm type	Onshore wind farm

Key dates  

	140.4 MW commissioned
	156 MW commissioned
	140.4 MW decommissioned

Players  

Developers	#ND
Operator	#ND
Owner	#ND
Manufacturer	Vestas

Turbines   

Operational	Vestas V100/2000 (x 78)
Dismantled	Vestas V80/1800 (x 78)

Sources  

Details  

Part #1

Part	Marengo Wind 1
City	Dayton, Columbia
Commissioning
Turbines	78x Vestas V80/1800 (power 1,800 kW, diameter 80 m)
Hub height
Total nominal power	140,400 kW
Status	Dismantled
Developer
Coordinates	Latitude 46° 21' 37.9" - Longitude -117° 50' 10.3"
Precise localization	Yes

Part #2

Part	Repowering
City	Dayton, Columbia
Commissioning
Turbines	78x Vestas V100/2000 (power 2,000 kW, diameter 100 m)
Hub height
Total nominal power	156,000 kW
Status	Operational
Coordinates	Latitude 46° 21' 37.9" - Longitude -117° 50' 10.3"
Precise localization	Yes

	Databases       USA (252.1 GW) Americas (614.9 GW) World (2,451.9 GW) All databases

	PDF Summary

	Nearby wind farms Marengo II (0 km) Hopkins Ridge I (8 km) Hopkins Ridge II (8 km) Lower Snake River I (15 km) Tucannon River Wind Project (18 km) Chopin (72 km) Chopin II (72 km) Combine Hills I (74 km) Combine Hills II (74 km) Rattlesnake Flat (74 km)

	Insights Production capacity USA : 158,826.0 MW (end of 2025) Washington : 3,695.6 MW (*)

	Légende #ND : no data (*) : according to The Wind Power database

	Update for this sheet 19 December 2025