The Tehachapi Wind Energy Storage project will test an 8 MW- 4 hour (32 MWh) lithium-ion battery that will store energy from the more than 5,000 existing wind turbines and any future additions. The Tehachapi Wind Resource Area spans the end of the San Joaquin Valley and spreads through Tehachapi Pass into the adjacent Mojave Desert. It is the home of many large scale wind farms which collectively produce more electricity than any other wind development in the United States. The battery system - made of more than 600,000 individual battery cells - use the same lithium-ion cells installed in battery packs for General Motors' Chevrolet Volt.
The project will demonstrate the performance of the lithium-ion batteries in actual system conditions while testing the capability to automate the operations of the battery energy storage system and integrate it into the power grid. Southern California Edison (SCE) expects this demonstration project to provide a significant amount of insight into the operational capabilities of large-scale, lithium-ion battery storage.
Demonstrating the value of energy storage to provide:
- Renewable integration
- Ancillary services
Type of Technology
Lithium-ion battery – An energy-storage chemistry that is common in consumer electronics. Lithium-Ion batteries are also growing in popularity in electric vehicles and grid storage applications.
- Power Capacity Rating: 8 MW
- Energy Capacity Rating: 32 MWh
- Type of Energy Storage: Lithium Ion
Key Developers and Partners
- LG Chem
Energy Commission Funding
Completed but under repair. Expected to be back in operation by Spring 2015.