The objectives of the proposed demonstration were to significantly reduce peak load and measurably improve power reliability at Santa Rita Jail. This was to be accomplished by implementing a CERTS (Consortium for Electric Reliability Technology Solutions) microgrid that would incorporate one of the nation’s largest customer-sited NaS energy storage systems with multiple distributed energy resources. By effectively reducing peak load, the project planned to improve grid reliability, increase grid efficiency and security. By providing islanding capability, the project would meet critical customer reliability requirements.
- California Energy Commission
- California Public Utilities Commission
- Alameda County General Services Agency
- California ISO
- University of Wisconsin
- Reduce peak load of utility distribution feeder by 15% via utilization of distributed energy resources (DER)
- Demonstrate the commercial implementation of CERTS self-healing, DOE-developed microgrid combined with large-scale (12 MWh) distributed energy storage
- Improve power reliability by providing dispatchable renewable energy
- Increase grid efficiency and security through the development of monitoring, diagnostic, and automation capabilities
- Providing uninterrupted power to the entire facility
- Diesel Control System in service (November 2010)
- Battery in service (February 2011)
- Static Disconnect Switching service (February 2011)
- Evaluation and reporting complete (November 2012)
According to , with the installation in 2011 of a 2-MW advanced energy storage system and an automatic disconnect switch, the facility evolved into a complete smart grid with full CERTS functionality—meaning, it has the capability to “island” itself off of the main utility grid and independently generate and store its own energy. The distributed energy control system also can dramatically reduce peak demand during normal grid-connected operations or during a demand response event.