To facilitate the adoption of vehicle-to-grid (V2G) technologies, as part of the broader effort to support vehicle-grid integration, the California Energy Commission maintains a list of bidirectional charging equipment. Bidirectional technologies can charge a vehicle’s batteries with energy from the grid but also power the grid with energy from the vehicle’s batteries during times beneficial to the driver. These V2G services can provide revenue to drivers while ensuring their vehicles have enough range. And the services provide valuable energy at the right times to the grid. Before delivering power to the grid, customers must go through the utility’s interconnection process and receive Permission to Operate from the utility.
The CEC V2G Equipment List tracks bidirectional charging equipment certified to UL 1741 (including any subsequent supplements). UL 1741 is a national safety standard used with distributed energy resources, and UL 1741 certification may be required by some utilities for equipment interconnection. CEC reviews submitted equipment models for UL 1741 test report validity and test completeness. CEC does not conduct testing on submitted equipment models.