Pevensey Bay 20kWh Powerwall System

This dual-battery system features two 10kWh units, designed specifically to take advantage of the client’s Economy 7 night-time tariff. By storing low-cost electricity overnight and using it during peak hours, the system dramatically cuts daytime energy spend. With a payback period of just 4 years and 5 months, and net lifetime savings of £37,965, this install shows how smart battery strategy can deliver exceptional returns — all while maintaining the clean, quiet performance expected from a Zephyr system.