For photovoltaic systems on private houses (usually up to 30 kWP), there are various subsidy programmes from the federal and state governments, ranging from feed-in tariffs and low-interest loans to subsidies from energy suppliers. Basically, there are two types of subsidies - investment subsidies for the purchase of a PV system and "operational" subsidies in the form of feed-in tariffs under the Renewable Energy Sources Act (EEG), GEG. The application for investment subsidies must be submitted before purchasing the PV system. You will receive the feed-in tariff after prior registration of your system when it is commissioned.
The Kreditanstalt für Wiederaufbau (KfW) is the central point of contact for the nationwide programme for photovoltaic promotion. A PV system must meet the requirements of the Renewable Energy Sources Act, including feeding the solar electricity into the public grid. Another important requirement for funding is that the building on which the system is to be installed was not constructed for the purpose of generating electricity. Since November 2020, there has also been funding for private charging stations for electric cars.
In addition to the nationwide funding via KfW Bank, some federal states also offer funding programmes for photovoltaic systems, including the NRW Progress Programme or the Solar Storage Programme via the Rhineland-Palatinate Energy Agency. Possible subsidies include grants, acquisition assistance, assumption of initial consultation costs and low-interest loans.
For more up-to-date information, please see the details at www.kfw.de