A 5kW residential energy storage system is designed to store electricity generated by solar panels or other renewable energy sources for later use. It consists of a battery bank, an inverter, and a control system. Whether you are a homeowner aiming to maximize your self-consumption of solar energy or a green technology enthusiast, this guide provides essential insights to help. SolarBatteryforHome. It begins with an overview of the energy consumption patterns and challenges faced by small homeowners.