NEMA has published its EVSE Power Export Permitting Standard, which defines the technical parameters to allow EV owners to enable bidirectional charging, which allows electricity to flow to EVs and EVs to transfer power back to the grid.
NEMA’s bidirectional EV charging standard defines characteristics in key domains, electrical, communications, and cybersecurity for permitting of power export between EV supply equipment and an electric power system. With vehicle to grid (V2G) and vehicle to building/home (V2B, V2H) technology, EVs act as mobile energy storage units to power homes, buildings, and the grid itself. The Standard could also put money back in EV owners’ pockets by enabling their cars to store energy overnight or when not in use, then sell power back to the grid at a profit during peak demand hours.
Patrick Hughes, Senior Vice President of Technical Affairs at NEMA, highlighted how this could change the game for grid resiliency. “NEMA’s Electric Vehicle Supply Equipment (EVSE) Power Export Permitting Standard is an important tool to reach these goals, and local jurisdictions should reference this standard when permitting these systems.”
David Kendall, director of Industry Affairs at ABB, also noted the safety benefits, saying the new standard will make installations safer while supporting grid stability and helping consumers maximize their EV investment.
Read more: There’s finally(!) an automatic fix to restart failed EV charging sessions
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