Your electric car as a home power station: how Polestar 4 is rewriting what EV ownership means

© A. Krivonosov / SPEEDME

Polestar and Danish charging operator Clever have launched Denmark's first full V2X pilot with the Polestar 4. The idea is to turn the electric car into something more than transport — into part of the home and city energy system.

The project will test three scenarios at once. V2H will let the car battery power a home during periods of expensive electricity. V2G will allow energy to be sent back to the public grid at peak demand. The third mode is backup power: during an outage, the car can serve as an energy source for the household.

Pilot participants will get a DC wallbox with bidirectional charging. The Polestar 4 will charge when electricity is cheaper, then use the stored energy wherever it brings more value or is needed most. Clever estimates that more than 600,000 such «large batteries» are already driving on Danish roads, and their potential is still barely tapped.

The Polestar 4 itself does not yet offer V2X as a standard production feature. The capability was enabled specifically for the pilot, but Polestar plans to roll out such functions more broadly through over-the-air updates. The pilot will run until autumn 2026, with Clever's first commercial V2X services scheduled for 2027.

For owners, the benefits are clear: lower electricity bills, a backup during outages and a chance to earn from energy. For the grid — a more flexible way to smooth demand peaks without building extra capacity.