Photo: Bouchecl (CC BY-SA 4.0)
Technology
Vehicle-to-Grid (V2G): When Your Electric Car Becomes a Backup Battery
July 31, 2026
By Hugo Beignon, Founder of ma-borne-electrique.com
Bidirectional charging, which lets an electric car power a home or feed the grid, remains an emerging technology in France in 2026.
What if your electric car could also power your home during a blackout, or sell energy back to the grid at just the right moment? That's the promise of vehicle-to-grid, or V2G, a technology that's still emerging but being watched closely in France in 2026.
How bidirectional charging works
Unlike standard one-way charging, V2G lets energy flow both ways between the vehicle's battery and the home or the grid. It requires a compatible vehicle and a charger capable of handling bidirectional flow, generally built around the ISO 15118 standard.
Why it's gaining traction in 2026
Utility interest in these technologies is growing, partly because optimizing when you consume electricity is becoming more accessible: since August 2026, the off-peak/peak-hours option in France is now open to 3kVA subscriptions, previously reserved for 6kVA and above. That makes smart charging, and by extension V2G, more relevant to more households.
Promising benefits, but still few compatible models
The expected benefits are real: backup power during outages, helping balance the electricity grid, and eventually revenue from smart-charging offers. But few compatible vehicle models are currently available on the French market, and the required equipment remains expensive. V2G is worth watching closely, not yet a mass-market solution.
Frequently asked questions
What is vehicle-to-grid (V2G)?
It's a bidirectional charging technology that lets an EV's battery power a home or the electricity grid, not just get charged itself.
What equipment do I need to use V2G?
You need a compatible vehicle and a charger capable of handling bidirectional charging, generally built around the ISO 15118 standard.
Is V2G already widespread in France in 2026?
No, it's still an emerging technology: few compatible models are available and the equipment remains expensive.
What benefits does V2G offer?
It promises backup power during outages, help balancing the electricity grid, and eventually revenue from smart-charging offers.
Want to find a charging station nearby? Check the charging map to plan your next trip.
