Projects

Pumped Storage Projects

The following are among the prospective pumped storage projects currently being studied 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

White Pine Pumped Storage

Location: Ely County, Nevada
Type: Closed Loop Pumped Storage
Generating Capacity: 500-750 MW
Energy Storage Potential:  9,000 MWh

Owyhee Pumped Storage

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

Rose Creek Pumped Storage

Location: Mineral County, Nevada
Type: Semi-Closed Loop with Integrated Desalination
Generating Capacity: 200-250 MW
Energy Storage Potential: 2,000-3,000 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

Seminoe Pumped Storage

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

Prineville Pumped Storage

Location: Crook County, Oregon
Type: Pumped storage utilizing existing lower reservoir
Generating Capacity: 200 MW
Energy Storage Potential:1,800 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.

Compressed Air Energy Storage (CAES) Projects

Gridflex is evaluating the prospects for Compressed Air Energy Storage at several exceptionally well-suited locations. CAES, which uses underground air storage caverns similar in type to those commonly used to store natural gas, is the only commercialized energy storage technology that can match the cost effectiveness of pumped storage at long durations. However, CAES has very exacting requirements for suitable underground geology, and workable sites are rare.

Kansas Energy Storage Center

Location: Kiowa County, Kansas
Type: Compressed Air Energy Storage
Generating Capacity: 135 MW
Energy Storage Potential: 2,700 MWh+

CAES Project 2

Location: Confidential
Type: Compressed Air Energy Storage
Generating Capacity: 317 MW
Energy Storage Potential: 6,000 MWh+