Royal Slope Power Transmission Line Project

Power transmission lines and blue sky.

Royal Slope Solar LLC, a subsidiary of Clearway Energy Group requests a land use authorization license from Reclamation to construct, operate, and maintain electrical power lines and associated access roads on Reclamation-administered land. The 230-kilovolt electrical power line would transmit electricity from a solar power generation facility on private land, across Reclamation-administered land, to the Vantage Substation located east of Wanapum Dam in Grant County, Washington.

Reclamation plans to analyze the effects of authorizing the project by preparing an environmental assessment, pursuant to the National Environmental Policy Act.

Documents
02/2022 Scoping Report PDF 2.38MB
Related Links
06/2025 Royal Slope Solar Project Link


Contact

Kavi Koleini
Natural Resource Specialist
208-378-5358
kkoleini@usbr.gov

Bureau of Reclamation
Columbia–Pacific Northwest Region
1150 N. Curtis Road
Boise, Idaho 83706


Last Updated: 6/17/25