Deutsche Wärmepumpen Werke DWW-29.9KW-3P-A-X

What the Deutsche Wärmepumpen Werke DWW-29.9KW-3P-A-X does

A hybrid inverter runs both the solar array and a home battery: it supplies the home from the panels first, stores the surplus and draws on the battery when the sun goes down. With 29.9 kW of AC output, the Deutsche Wärmepumpen Werke DWW-29.9KW-3P-A-X suits an array of about 29.9–38.9 kWp, as installers commonly size the panels up to 30% above the inverter's rating.

In Germany, an array of the same size produces about 26,910 kWh a year, assuming a conservative 900 kWh per kWp: worth €2,072 a year fed into the grid at 7.70 ct per kWh, and up to €9,957 used at home instead of buying power at 37.0 ct.