The LEAF to Home power supply unit will be showcased in Japanese Nissan dealerships from June. When used with Nichicon’s EV Power Station fast-charging unit this allows the LEAF’s on-board battery to be used as a domestic power reserve.

Nissan said the system, which can be used by existing LEAF owners, offers a four-hour recharge for the car’s battery and will cost around 330,000 yen after government subsidies.

A fully charged LEAF battery is enough to power the average Japanese household for around two days. It can also feed electricity back to the grid during the day, when demand is highest, offering drivers potential reductions in their electricity bills.