A Volkswagen electric vehicle charges at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

A bi-directional Vehicle-to-Grid (V2G) charging station is pictured at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

A man connects a Tesla electric vehicle to a DC/AC inverter at the University of Gävle on May 28, 2026 in Gävle, Sweden. The setup is used to test Vehicle-to-Grid (V2G) technology, allowing electricity stored in the vehicle's battery to power a building during a simulated power outage. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

Herbert Svensson walks next to a bi-directional Vehicle-to-Grid (V2G) charging station at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

A bi-directional Vehicle-to-Grid (V2G) charging station is pictured at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

A Volkswagen electric vehicle charges at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

Filip Kiltorp, 33, a sales representative at Canon Business Center, charges his Volkswagen electric vehicle at the BRF Stenberg condominium association on May 28, 2026, in Hudiksvall, Sweden. The residential pilot project uses Vehicle-to-Grid (V2G) technology, enabling electric vehicles to act as mobile energy storage units capable of supplying electricity back to the local grid when needed. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)

A Tesla electric vehicle is connected to a DC/AC inverter at the University of Gävle on May 28, 2026 in Gävle, Sweden. The setup is used to test Vehicle-to-Grid (V2G) technology, allowing electricity stored in the vehicle's battery to power a building during a simulated power outage. (Photo by Jonathan NACKSTRAND / AFP via Getty Images)