German engineering and electronics firm Bosch has made it possible for solar-equipped homes to run on 100 percent renewable power during the summer months . The firm ’ s Bosch Power Tec BPT-S5 Hybrid storage solution features a transformerless 5kW inverter , a lithium-ion battery with a capacity ranging from 4.4kWh to 13.2kWh and a touchscreen energy management display .

During the day , the system provides energy from rooftop solar panels , while storing any excess for use once the sun goes down . When the battery is full , excess energy is fed back to the grid . According to Bosch , using an inverter and storage unit can help homeowners generate up to 80 percent of their energy independently .

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