Changes BEG promotion

Water treatment remains eligible for funding in 2023

In order to achieve an even stronger climate protection effect and to further reduce dependence on Russian gas and oil, the BEG individual measures have been adjusted as of 01.01.2023. This is the third change within one year since the funding program was established. The most important aspect is that water treatment will continue to be eligible for funding of up to 40 percent.

The Federal Support for Efficient Buildings (BEG) combines previous support programs to promote energy efficiency and renewable energies in the building sector. It thus supports, among other things, the use of new heating systems, the optimization of existing heating systems, measures on the building envelope and the use of optimized systems technology.

Almost exactly two years ago, the BEG replaced the former BAFA support programs Heating with Renewable Energies and Heating Optimization with the so-called individual measures (BEG EM). Since July 1, 2021, there have also been the so-called systemic measures BEG WG and BEG NWG. As of 01.01.2023, a new adjustment has now been added. Another novelty: the previous restrictions to owners, lessees and tenants have been removed and the eligibility to apply has been extended to all investors. In addition, there are two new regulations on energy saving, which came into force on 01.09.2022 and 01.10.2022.

BEG reform on individual measures from 01.01.2023 (BEG EM 2023):

The maximum subsidy of 40 percent for heat generation systems will only be available after the deadline of Jan. 1, 2023, if the system is connected to a heating network (30 percent + 10 percent heating exchange bonus) or if heat pumps are installed (25 percent + 10 percent heating exchange bonus + 5 percent heat pump bonus). In the case of heating system optimization, the maximum is 20 percent. The loan subsidy via KfW, which was available as an option until July 27, 2022, remains cancelled for EM. In addition, since August 15, 2022, gas is no longer eligible in principle – but, like oil, it is still permissible.

The subsidy for biomass will remain, but will be greatly reduced to a maximum of 20 percent. Since the middle of last year, the so-called iSFP bonus has only been available for the building envelope, systems engineering (except heating) and heating optimization, which has now been reduced to a maximum of five residential units for existing buildings and to a maximum of 1,000 square meters of heated area for non-residential buildings.

Further information

More detailed explanations and further details can be found in the current Building Energy Act (GEG), in the current ordinances of the Federal Government (EnSikuMaV of 01.09.2022 and EnSimiMaV of 01.10.2022) and at and respectively.

In addition, the most important promotional measures relating to water treatment are clearly summarized on the JUDO website at:


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