Vehicle-to-grid

Vehicle-to-grid (V2G) describes a system in which plug-in electric vehicles (PIEVs) sell demand response services to the electrical grid. Such services are either backfeeding electricity to the grid, or reducing the rate of charge from the grid at different times of the day. Demand services reduce demand peaks for grid supply, and hence reduce the probability of disruption from load variations.

Vehicle-to-load (V2L) and vehicle-to-vehicle (V2V) are related concepts, but the AC phase is not synchronised with the grid, so the power is only available to "off-grid" loads.

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Source: Wikipedia · Image: Wikimedia Commons · CC0

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