Distribution System Aware Vehicle to Grid Services for Improved Grid Stability and Reliability
V2G systems enable plug-in vehicles to provide meaningful, value-added grid support functions.
This project was completed in 2018. The final report is undergoing the Energy Commission publication process. EPRI developed an end-to-end capable V2G system that demonstrated grid condition awareness in a safe and outage-immune method. Aerovironment and Kitu completed integration and assembly of J3072 and SEP 2.0b software into the 10 demonstration EVSEs. The research team developed the on-board V2G communication module for the PEV and demonstrated the functionality at UCSD. The value analysis showed a cumulative maximum benefit to the grid (net of cost increment) to range between $450-$1,850/year per vehicle in defrayed or deferred infrastructure upgrade costs, which is about five times more valuable than smart charging for similar grid service applications. The project partners, including the University of Delaware and U.S. DOE, are using the findings to further advance VGI research.
The project developed an integrated vehicle-to-grid (V2G) system that was tested and demonstrated to be distribution-aware, self-regulating, interoperable, secure and open as well as scalable and flexible. These real-world test and demonstration results can provide confidence in the V2G systems that provide grid support functions and possibly influence investor owned utilities (IOUs) to add them to their Assembly Bill 2514 Storage Mandate compliance plans. The data gathered and analysis validated the cost effectiveness models through direct engagement with the IOUs' existing infrastructure and distribution networks, combined with simulated independent system operator interaction.
Analysis showed that PEVs can provide a net ratepayer benefit of ~$2,500 per vehicle and a statewide economic benefit of over $5,000 per vehicle. Using TOU rates to shift charging loads off-peak reduces distribution upgrade costs
Vehicle to grid technologies provide ancillary support to the grid during gaps in service and when addressing renewable generation intermittency. With increasing penetrations of PV, its marginal capacity value will decline from ~
Key Project Members
Energy & Environmental Economics, Inc.
Clean Fuel Connection, Inc.
Electric Power Research Institute, Inc.