Vehicle-to-grid, often shortened to V2G, is the use of bidirectional electric-vehicle charging so a plugged-in vehicle can supply power back to a building or the wider grid when it makes sense. It is part of a broader family that also includes vehicle-to-home and vehicle-to-building setups.
How It Works
A V2G system needs a compatible charger, vehicle support, and control software that decides when charging should pause, continue, or reverse into discharge. Those decisions depend on electricity prices, grid demand, renewable output, battery condition, and whether the driver still needs the vehicle soon. That is why V2G depends heavily on smart charging, the battery management system, and forecasting.
Why It Matters
V2G matters because parked EVs represent flexible stored energy. Under the right conditions, they can help shave peaks, support resilience, absorb renewable surpluses, and create new value streams for fleets and infrastructure operators. But it only works well when the control layer respects battery wear, departure readiness, and economic tradeoffs instead of pushing every connected vehicle the same way.
Where You See It
V2G is most visible today in pilot programs for school buses, commercial fleets, campuses, resilience projects, and commercial energy sites with long parking dwell times. It is closely tied to Electric Vehicle Optimization and energy-storage coordination such as Intelligent Energy Storage Management.
Related Yenra articles: Electric Vehicle Optimization, Intelligent Energy Storage Management, and Greenhouse Gas Emission Modeling.
Related concepts: Smart Charging, Battery Management System (BMS), Predictive Analytics, and Time Series Forecasting.