Denmark Tests EVs as Power Banks for Homes and Grid

Imagine plugging your car into your house instead of the other way around. That's exactly what Danish families will test this year as charging provider Clever and automaker Polestar launch a groundbreaking pilot program.

The project turns electric vehicles into massive mobile batteries that work for their owners in three game-changing ways. During power outages, your EV becomes an emergency generator keeping the lights on. When electricity prices spike, it powers your home instead of pulling from the expensive grid. And during peak demand, it can even sell power back to utilities, putting money in your pocket.

More than 600,000 electric vehicles already cruise Danish roads, each carrying battery capacity several times larger than typical home storage systems. Until now, that enormous energy potential sat unused in driveways and garages.

Selected Danish households will receive special DC chargers that enable the two-way power flow. The Polestar 4 sedans used in the trial received special activation for the project, with plans to roll out the feature commercially through software updates later.

"We are now taking V2X from a vision of the future to everyday reality," said Christina Fink, CEO at Clever. The company aims to launch the first commercial offerings in 2027, making Denmark one of the first countries where EVs routinely share power with homes and the grid.

The timing couldn't be better. As more renewable energy comes online, grid stability becomes increasingly important since solar and wind power fluctuate with weather. Electric vehicles can absorb excess renewable energy when production is high and return it when needed.

The Ripple Effect

This pilot represents more than clever technology. It fundamentally reimagines the relationship between transportation and energy. Every electric vehicle becomes a resource that strengthens the entire power system while reducing costs for families.

The concept is already gaining momentum across Europe. Germany's E.ON and BMW launched their country's first commercial vehicle-to-grid service in March, while Renault and The Mobility House started offering it in France back in 2024.

For Danish families in the pilot, the benefits are tangible and immediate. Lower energy bills, backup power during storms, and the satisfaction of supporting renewable energy adoption. Their cars will literally work for them even while parked.

The pilot runs through autumn 2026, but its impact could reshape how millions of people think about their vehicles and their power.