Southern California Edison selected AltaGas to build, own and operate a 20 MW battery energy storage system (BESS) at AltaGas’s Pomona natural gas-fired peaking power plant in the east Los Angeles Basin. SCE will purchase energy from the project, one of the largest battery energy storage systems in the nation, under a 10-year power purchase agreement, integrating more renewable energy into its system and helping its customers avoid costly outages. ARB was the general contractor on the project, and POWER provided detailed design on a fast-track schedule, helping AltaGas meet the energization date required by the PPA.
- 12,240 lithium-ion batteries
- Energy management system provided by Greensmith Energy
- New battery enclosure located within an existing warehouse
- Battery enclosure divided into four independent fire rated battery rooms with new HVAC ductwork, electrical interconnection services and fire protection systems
- New air cooled condensing HVAC units provided for battery cooling
- FM200 fire protection system, compliant with NFPA 2001 and connected to a remote monitoring station
- New battery banks and associated metering and relay design
- Interconnection to existing 13.8 kV switchgear
- Detailed electrical design for interconnection of the battery systems to the transmission grid
- Architectural, structural and mechanical design for the new battery enclosure and electrical components
- Fire protection system design
- Support for battery system installation, testing and commissioning
AltaGas was recognized with a Grid Edge 2017 award for its Pomona Energy Storage project. This award recognizes leading companies and projects that incorporate distributed energy resources, energy-enabled customers, and emerging trends in energy delivery.
POWER Engineers was recognized by the American Council of Engineering Companies (ACEC) of Idaho, which selected the Pomona Energy Storage Facility to receive first place for Category K, Energy for the 2017 Engineering Excellence Awards Competition.