The British government is evaluating proposals to provide manufacturers with financial incentives for installing vehicle-to-grid (V2G) technology in electric vehicles as part of its review of zero-emission vehicle mandates. The technology enables drivers to charge their cars during periods of low-cost overnight electricity and subsequently return stored power to the grid during times of high demand, or alternatively power their homes through vehicle-to-home (V2H) systems.
Support for V2G implementation stems from its potential to address a significant challenge in the renewable energy transition: maintaining grid stability during periods when wind and solar generation falls below electricity demand. Officials believe widespread adoption of this capability could reduce strain on existing power infrastructure and decrease reliance on natural gas plants to supply power gaps. The technology complements existing smart charging systems, which already help balance supply and demand by encouraging vehicle owners to charge during periods of electricity abundance.
Under the government’s proposals currently under review, manufacturers could earn credits for installing bidirectional charging systems. These credits would allow carmakers to sell additional petrol-powered vehicles without facing penalties for failing to meet zero-emission targets. Environmental advocates and consumer representatives have raised concerns about this approach, arguing that manufacturers could receive substantial payments for equipment that few drivers currently possess the infrastructure to utilize. Energy industry analysts noted that while companies in the UK, France, and Germany already operate programs allowing drivers to earn money through grid services, broader consumer adoption remains limited.
Forecasting organizations estimate that if V2G technology achieves significant penetration in the vehicle fleet, it could provide approximately 1.2 gigawatts of available power capacity by 2030, potentially expanding to 41 gigawatts by 2050. Critics contend that crediting manufacturers for this nascent technology is premature, particularly given concerns about the overall direction of the government’s zero-emission vehicle mandate.
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