Siemens S120 Booksize - Active Line Modul 16kW mit Erweiterung nach VDE AR-N 4105

What the Siemens S120 Booksize does

A solar string inverter turns the direct current from a rooftop array into grid-quality alternating current for the home, and feeds what the home does not use into the grid. With 16 kW of AC output, the Siemens S120 Booksize suits an array of about 16–20.8 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 14,400 kWh a year, assuming a conservative 900 kWh per kWp: worth €1,109 a year fed into the grid at 7.70 ct per kWh, and up to €5,328 used at home instead of buying power at 37.0 ct.