Sonnenbatterie announced an all-in-one residential PV and storage system for $10,645. The price includes a 2 kilowatt-hour eco 2 Sonnenbatterie battery, a German-made PV panel, an inverter, an intelligent control system and 19 percent sales tax (called value added tax or VAT in Europe). The only cost not included is installation, since this varies according to location. Philipp Schröder, Sonnenbatterie’s managing director, told GTM a “low-end” installation cost could be in the region of $745, including VAT.