Boswell Springs Wind Project is an operational wind farm located in the US state of Wyoming. The project was developed by renewable power producer by Innergex Renewable Energy.
Works on the wind project commenced in June 2023 and it began commercial operations in December 2024.
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The construction cost of the Boswell Springs Wind Project totalled around $576m.
Over the construction phase, the project generated between 150 and 200 jobs. The wind farm will have ten full-time employees during operations.
The 330MW project is capable of producing 1,160 gigawatt-hours (GWh) annually, enough to power 113,000 Wyoming households.
It will also benefit the local community by generating $65m in property tax, $34m in wind generation tax, and $20m in sales and use tax during its lifespan.
Boswell Springs Wind Project Location
The Boswell Springs Wind Project is situated on a 21,500-acre privately held land in Albany County, Wyoming. The site is located nearly 14 miles northeast of the town of Rock River and approximately 20 miles east of Medicine Bow.
The land on which the wind farm was built was largely undeveloped and primarily used for cattle ranching.
The project occupies only a small portion of the designated land, allowing ranching activities to continue on the rest of the area.
Boswell Springs Wind Project Details
The Boswell Springs Wind Project features 97 wind turbine generators (WTGs) along with ancillary interconnection facilities.
The WTGs exhibit a hub height of 321.5ft and a 140m rotor. They are arranged in ten rows aligned from north to south.
The project uses General Electric 3.4 MW Sierra 140 WTGs.
These onshore wind turbine platform features twin blades with a length of 68.7m to reduce logistical issues.
The WTGs feature a yaw system with hydraulic braking, and it also reduces trailing edge noise and can generate energy using lower wind speeds.
Boswell Springs Wind Project is expected to have a lifespan of 30 years.
Power Transmission
The wind energy produced by the Boswell Springs project is transported to the electrical grid via the Last Mile Transmission line project.
The 34.5-mile 230kV generation-tie line runs east-west from PacifiCorp’s existing Freezeout Substation in Carbon County and the Boswell Springs substation approximately 14 miles northeast of Rock River in Albany County.
It passes through privately-owned lands and lands administered by the Bureau of Land Management and the State of Wyoming.
According to Innergex, the transmission line uses a combination of wooden H-frame and single steel pole transmission structures installed 700ft-900ft apart.
Each of these structures is around 75-110ft in height (maximum 150ft).
Boswell Springs Wind Project will be connected to the PacifiCorp power grid at the PacifiCorp Freezeout Substation.
Construction of the Last Mile transmission line began in January 2023.
Financing
In July 2023, Innergex closed $534m in construction financing for the wind project.
The figure included a $203m ten-year non-recourse term loan from BNP Paribas, Credit-Agricole CIB, Export Development Canada, and MUFG Bank. Innergex secured $103m through its revolving credit facilities.
Boswell Springs Wind Project is expected to generate operating cash flows up to $22m.
Innergex closed a $322.7m tax equity commitment with JP Morgan and Capital One for the project in October 2023.
JP Morgan and Capital One agreed to fund the upfront investment at substantial completion of the project and make cash payments as production tax credits are generated over a ten-year period.
Contracts and Offtake Agreement
Energy equipment manufacturing company GE Vernova supplied the wind turbine generators for Boswell Springs Wind Project.
Construction company Mortenson was selected as the Engineering, Procurement, and Construction (EPC) contractor for the wind farm.
The scope of work included access roads, foundations, underground collection, substation, and erection of the turbines.
AEI served as the EPC contractor for the transmission line.
In June 2022, Berkshire Hathaway subsidiary PacifiCorp signed a 30-year power purchase agreement (PPA) to buy the electricity produced by Boswell Springs.
