Polestar and Clever Turn EVs Into Home Power Banks in Denmark

Polestar and Danish charging company Clever have launched a pilot project that allows electric vehicles to power homes, support the electricity grid, and provide backup energy during outages. The initiative, which uses the Polestar 4, marks Denmark’s first test of a complete vehicle-to-everything (V2X) ecosystem and highlights the growing role EVs could play in future energy systems.

The project aims to demonstrate how electric vehicles can function as mobile energy storage units rather than simply transportation devices.

Polestar 4 powers homes and supports the electricity grid

The pilot centers on the Polestar 4 and its ability to send electricity back to homes and the broader grid through V2X technology.

The program is testing three primary use cases. The first is vehicle-to-home (V2H), where the EV powers a household during periods of high electricity prices. The second is vehicle-to-grid (V2G), allowing stored energy to be supplied back to the electricity network when demand rises. The third involves “islanding,” a backup power mode that can keep a home running directly from the vehicle’s battery during an outage.

Polestar said its software-defined vehicle architecture makes these capabilities possible through over-the-air software updates and connected energy management systems, according to a press release.

According to the companies, a fully charged EV could potentially power an average household for several days during an extended outage, depending on electricity consumption.

Denmark positions EVs as part of the renewable energy transition

The pilot reflects a broader trend across Europe as utilities and automakers explore ways to use EV batteries to strengthen electricity networks and increase renewable energy utilization.

Clever already operates a smart charging platform that automatically schedules vehicle charging during periods of lower electricity prices and reduced grid demand. The addition of V2X functionality expands that concept by allowing energy to flow in both directions.

Polestar Denmark Managing Director Henrik Bang said electric vehicles could become a central part of household energy management, helping consumers lower electricity costs while supporting renewable energy adoption.

Meanwhile, Clever CEO Christina Fink said the goal is to move V2X technology from a future concept into a practical consumer solution. The company hopes to launch its first commercial V2X offering in 2027.

If successful, the pilot could demonstrate how millions of EVs may eventually serve as distributed energy assets, helping balance renewable power generation while creating additional value for vehicle owners beyond transportation.

EV.com tracks the evolving EV collector space and performance electric vehicles hitting the market. Explore our listings to find the best EVs in your area available today.