Energy regulations in house construction

Hello,

we are considering building a single-family house and are currently gathering information. We want a very simple heating system, namely a gas boiler with underfloor heating. I have been to three construction companies so far and have always been told that I cannot install only a gas boiler because according to energy regulations at least 20% of the energy must be obtained from renewable sources. Therefore, in addition to the gas boiler, a solar system, controlled residential ventilation, or a completely different heating technology (pellet heating, heat pump) must be used. Is it really the case that I am legally obliged to comply with the 20% requirement? Even if I do not want to take advantage of any grants or subsidies?

Thanks in advance for the answers.

Regards

Yes, google it...

It is described quite well here: search for "Erneuerbare Energien-Wärmegesetz" Use obligation and replacement measures. The use of biogas could be interesting for you, with it you can also fulfill the requirements, further measures would then not be necessary. Regards, Sebastian Link removed; please observe forum rules!

The link will be deleted soundso... also had more written there :rolleyes: