sonnen is one of the biggest names in energy storage technology, and in 2016 the company announced a new battery designed for home use: the sonnen eco. The eco is a fully integrated energy storage system that includes an inverter and smart energy management software. Property owners with solar that install a home battery like the eco are able to store excess solar electricity for use later in the day. As a result, properties with solar-plus-storage can increase their total monthly savings in certain markets.