Transforming the energy infrastructure in order to consume less and reduce CO ₂ emissions is one of tomorrow’s greatest challenges. One of the keys to this energy transformation is energy storage: how can it be stored when it is cheapest and then be restored when demand is high?
Specializing in luxury electric cars, California-based Tesla Motors also owns Solarcity, a photovoltaic panel manufacturer. The combination has led to the creation of Tesla Energy, which designs batteries for the home that can store energy. The principle is simple: the battery is charged by means of solar panels installed on the outside of the building or simply stores energy from the power grid during off-peak hours. Dubbed Powerwall, this compact, stylish battery has a capacity of 7 to 10 kWh, which will fulfil the energy consumption needs of a home for an evening – if there was enough sunshine during the day. The Powerwall attaches to the wall like a radiator and is priced at around 3,000 dollars.

Read full story: Tesla Battery Revolution