Wind and solar
Our pioneering commitment to renewable energy began in the early 1980s with a demonstration wind project on the southern Oregon coast, followed by an experimental utility-scale wind project in Wyoming in the 1990s.
Renewable generation from company-owned and contracted solar and wind facilities represents an important and growing segment of our resource mix.
Wind and solar facilities
Oregon
Black Cap
Solar
Black Cap Solar
Black Cap started generating electricity for customers in October 2012 and produces enough energy to serve about 400 average homes annually. Black Cap was the first utility-scale solar operation in Oregon to begin supplying power.
Wyoming
Cedar Springs II
Wind
Cedar Springs II
Cedar Springs II is a 199-megawatt wind facility near Douglas, Wyoming.
Wyoming
Dunlap Ranch
Wind
Dunlap I
Dunlap I is located in Carbon County, Wyoming (near Medicine Bow). The turbines generate 111 megawatts of electricity.
The Dunlap turbines were upgraded (repowered) in 2020.
Wyoming
Ekola Flats
Wind
Ekola Flats
Ekola Flats is located near Medicine Bow, Wyoming. Together, the turbines generate 250 megawatts of electricity.
Wyoming
Foote Creek I, III, IV
Wind
Foote Creek I
Foote Creek I is a 41.4-megawatt project in Carbon County, Wyoming. It was the company's first wind facility and the first utility-scale wind project in Wyoming, a jointly owned demonstration project commissioned in 1999.
Turbines at Foote Creek were upgraded (repowered) in 2021.
Wyoming
Glenrock
Wind
Glenrock and Glenrock III
Glenrock, a 99-megawatt project located at the reclaimed Dave Johnston coal mine in Converse County, Wyoming, began operations in December 2008.
Glenrock III, a 39-megawatt project adjacent to the Glenrock and Rolling Hills wind projects, began operations in January 2009.
The facilities were fully upgraded (repowered) in 2019.
Washington
Goodnoe Hills
Wind
Goodnoe Hills
Goodnoe Hills, a 94-megawatt project near Goldendale, Washington, began operations in 2008.
The facility was upgraded (repowered) in 2019.
Wyoming
High Plains
Wind
High Plains
High Plains is a 99-megawatt project near the town of McFadden, Wyoming. The project includes 66 1.5 MW turbines located in Albany County.
High Plains began operations in September 2009.
The facility was upgraded (repowered) in 2019.
Oregon
Leaning Juniper
Wind
Leaning Juniper I
Leaning Juniper 1, a 100.5-megawatt project near Arlington, Oregon, began operations in September 2006. This project has 67, 1.5-megawatt turbines.
The facility was upgraded (repowered) in 2019.
Washington
Marengo
Wind
Marengo
Marengo, near Dayton, Washington, began operations in 2007 and 2008. With recent technology enhancements, the facility generates 234-megawatts of renewable energy.
Turbines at Marengo were upgraded (repowered) in 2020.
Wyoming
McFadden Ridge
Wind
McFadden Ridge
McFadden Ridge near McFadden, Wyoming, generates 28-megawatts of renewable energy. The facility came on-line in 2009 and was upgraded (repowered) in 2019.
Montana
Pryor Mountain
Wind
Pryor Mountain
Pryor Mountain is a 240-megawatt wind facility near Bridger, Montana. The facility began operation in 2020-2021.
Wyoming
Rolling Hills
Wind
Rolling Hills
Rolling Hills, a 100-megawatt project sited at the reclaimed Dave Johnston coal mine, began operations in January 2009. The facility was upgraded (repowered) in 2019.
Wyoming
Seven Mile Hill
Wind
Seven Mile Hill
Seven Mile Hill near Medicine Bow, Wyoming, generates 119-megawatts of renewable energy. The project came on-line in December 2008 and was upgraded (repowered) in 2019.
Wyoming
TB Flats
Wind
TB Flats
TB Flats is a 500-megawatt wind facility near Medicine Bow, Wyoming. The facility began operating in 2020-2021.