Projects

The following are among the prospective pumped storage projects currently being studied or under development by Gridflex:

Maysville Pumped Storage

Location: Mason County, Kentucky
Type: Semi-Closed Loop Pumped Storage with excavated mine reservoir
Generating Capacity: 200-500 MW
Energy Storage Potential: 3,000 MWh

Bison Peak Pumped Storage

Location: Kern County, California
Type: Closed Loop Pumped Storage
Generating Capacity: 360-480 MW
Energy Storage Potential:  3,000 MWh

White Pine Pumped Storage

Location: Ely County, Nevada
Type: Closed Loop Pumped Storage
Generating Capacity: 250-500 MW
Energy Storage Potential:  4,000 MWh

Seminoe Pumped Storage

Location:  Carbon County, Wyoming
Type: Pumped storage utilizing existing lower reservoirs
Generating Capacity: 700 MW
Energy Storage Potential: 7,000 MWh

Owyhee Pumped Storage

Location: Malheur County, Oregon
Type: Closed Loop Pumped Storage
Generating Capacity: 500 MW
Energy Storage Potential: 6,000 MWh

Southern Intertie Pumped Storage

Location: Mineral/Lyon Counties, Nevada
Type: Closed Loop Pumped Storage
Generating Capacity: 600 MW
Energy Storage Potential: 6,000 MWh

Anderson Ranch Pumped Storage

Location: Elmore County, Oregon
Type: Pumped storage using existing lower reservoir
Generating Capacity: 80 MW
Energy Storage Potential:1,000 MWh

Gridflex is investigating additional high-potential pumped storage sites in areas where they can meet needs for flexible capacity and support renewable resource integration.