What is bidirectional charging (V2X) and how does it work (e.g., Vehicle-to-Grid/Vehicle-to-Home)?

What is Bidirectional Charging (V2X)?

Bidirectional charging — also known as V2X (Vehicle-to-Everything) — is a technology that allows electric vehicles not only to charge from the grid but also to send energy back to external systems. This enables EVs to act as mobile energy storage or backup power sources.

Main Types of V2X

  • V2G (Vehicle-to-Grid): The EV supplies electricity back to the utility grid to help balance demand and reduce strain during peak hours.
  • V2H (Vehicle-to-Home): The EV powers a home during outages or peak times, reducing reliance on the grid.
  • V2L (Vehicle-to-Load): The EV powers tools, appliances, or camping equipment via onboard outlets.

How It Works

Bidirectional charging requires compatible hardware in both the vehicle and the charging station. A power inverter converts DC energy stored in the EV’s battery into AC electricity for home or grid use. Communication protocols ensure safe energy transfer and compliance with utility or home electrical systems.

Why It Matters

  • Provides backup power during outages.
  • Supports renewable energy integration and grid stability.
  • Can reduce energy bills or generate income through utility programs.