sonnen GmbH

Supplies energy storage systems for households and photovoltaic installations. Its AC battery storage systems connect in parallel with the PV inverter on the household AC network and incorporate a battery inverter that converts stored direct current into alternating current for household use. Current sonnenBatterie systems are available with standard or optional emergency and backup power capability, enabling a household to receive electricity during grid outages. The business also provides the sonnenApp for monitoring energy flows and sonnenVPP, its virtual power plant. Its renewable-energy offering covers photovoltaic-related products and services.

The company plans, sells, installs, maintains and services renewable-energy products, particularly photovoltaic systems. It also arranges insurance and loans for photovoltaic-related renewable-energy products. Technical training, operating instructions and a partner portal support specialist partners, while customer account access is provided through a customer portal. The company describes 15 years of experience for its specialist-partner business. Its information security management system has been audited and certified to ISO 27001 by TÜV Rheinland. sonnen Holding GmbH is a wholly owned subsidiary of Shell Overseas Investments B.V. The company reports a 100 percent recovery rate for its industrial waste batteries in the preceding calendar year under the stated German battery-law calculation method.