KOSTAL Industrie Elektrik PLENTICORE BI 25 G3

What the KOSTAL Industrie Elektrik PLENTICORE BI 25 G3 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 25 kW of AC output, the KOSTAL Industrie Elektrik PLENTICORE BI 25 G3 suits an array of about 25–32.5 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 22,500 kWh a year, assuming a conservative 900 kWh per kWp: worth €1,733 a year fed into the grid at 7.70 ct per kWh, and up to €8,325 used at home instead of buying power at 37.0 ct.