Bidirectional Charging

Charging hardware that lets an EV's battery push power back out to your home (V2H) or to the grid (V2G), turning the car into mobile storage.

Bidirectional charging uses an EV battery as a giant home battery — typically 60-100kWh, dwarfing a wall-mounted system. Two main use cases: V2H (Vehicle-to-Home) powers your house off the car, useful during a Cornwall storm power cut; and V2G (Vehicle-to-Grid) sells power to the grid via a smart tariff, earning the owner export income.

As of 2026 the technology is still niche. Compatible cars include the Nissan Leaf and Ariya (CHAdeMO V2G), Kia EV6 and Hyundai Ioniq 5 (CCS V2L/V2H), Polestar 3, Cupra Born, BYD Atto 3 and the BMW iX. Compatible chargers include the Wallbox Quasar 2, Indra V2H, and Sigenergy. The key barrier is cost: bidirectional chargers are £4,000-6,000 versus £600-1,000 for one-way 7kW units.

If you are interested in V2H/V2G for a Cornwall property, contact CCS — we have installed several Sigenergy SigenStor systems in 2025-2026. See our EV charging page.