Seminoe Pumped Storage Project
Sector: Power Generation (CCGT) • Location: Wyoming, United States
Source: Cowboy State Daily
The Seminoe Pumped Storage Project is a proposed 970-megawatt pumped storage facility at Seminoe Reservoir designed to provide stability to the electric grid. The project involves building a new upper reservoir on 120 acres of U.S. Bureau of Reclamation land, constructing tunnels and a power station in the mountain, intake structures on reservoir shorelines, and a 29-mile transmission line to a Pa
- Status
- Prospective
- Sector
- Power Generation (CCGT), Water Supply and Storage, Hospital, Hydro, Power Transmission, Commercial
- Location
- Wyoming, United States of America
- Updated
- 22 Jul 2026
- Source
- Cowboy State Daily
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Project Information
Participants
| Not available for this record. |
Status
Original status | planned |
Taiyo status | Prospective |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | The Seminoe Pumped Storage Project is a proposed 970-megawatt pumped storage facility at Seminoe Reservoir designed to provide stability to the electric grid. The project involves building a new upper reservoir on 120 acres of U.S. Bureau of Reclamation land, constructing tunnels and a power station in the mountain, intake structures on reservoir shorelines, and a 29-mile transmission line to a PacifiCorp substation near Medicine Bow. The project aims to pump water between upper and lower reservoirs to generate electricity during high-demand times and store energy during low usage times. It also includes mitigation measures to protect local wildlife and fisheries. |
Original sector | Energy |
Budget |
Location
Country | United States of America (USA) |
State | Wyoming |
Source
Source | Cowboy State Daily |
URL |
More Details
Record type | Project |
Sector | Power Generation (CCGT), Water Supply and Storage, Hospital, Hydro, Power Transmission, Commercial |
Article published date | 2026-04-11 |
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