ᐅ Is it possible to have a gas boiler without a solar system?

Hello,

we are currently building a solid masonry house with 36.5 Poroton blocks, a gas boiler, no external insulation, and no ventilation system.

Therefore, we do not meet any KfW requirements. The building permit / planning permission includes a solar panel system. Since I am not a fan of solar panels and would like to save around €5000, I am trying to avoid installing it. Is there a way around this? To comply with the energy saving ordinance, the system is basically required. However, my architect said that no one actually checks whether the system is installed or not. We would prepare all the necessary wiring, and if someone really notices the absence of the system, it could still be installed at short notice. Is there any problem with this approach?

I have already spoken with other "experts." Some said there would be no problem, others warned of a potential fine... the building authority would not check, but the chimney sweep might... then I asked the chimney sweep, and he said he wouldn’t check either...

So I am not really sure where I stand. Of course, I don’t want to skip the system and then, in 10 years, have to pay a hefty fine because it was checked somewhere.

Now I could really tear myself and my architect apart.

What exactly is your question now? Are you asking us to advise you to deliberately disregard the requirements of the energy-saving regulations, hoping that it goes unnoticed (regardless of whether or how the heating system would then need to be planned differently)?

If you’re not applying for KFW funding, I personally don’t see any moral issue with opting out of the current environmental regulations.

Legally, of course, you would be violating your building permit or planning permission. What consequences might follow is uncertain. Around here, it seems many people get away with consistently ignoring letters from the building authority...

But you have already submitted your building permit application, so the old regulations should still apply to you, right?

Do you have a chance to qualify for the 85% rule? That is, 85% of the reference house?

Alternatively, you could get used or defective solar panels and mount them on the roof. No one from below can really tell if water is actually passing through...

Best regards,

Andreas

You can waive the requirement for a 15% share of renewable energy in the thermal insulation certificate from the structural engineer for new buildings, if instead the transmission heat losses are reduced by 15% compared to the reference building, based on the current Energy Saving Ordinance 2016. This must be demonstrated through calculations for the monolithic wall or the entire insulation concept and proven in accordance with § 10 of the Renewable Energy Heat Act (compensatory measures). Any other approach is not compliant with the law.

In our case, the building authority did in fact check compliance with the energy saving regulations. And we managed to meet them only through the installed (!) solar system.

Yes, the building permit / planning permission has been approved. The shell structure is already standing.

As I mentioned before, my architect said he knows many houses built this way, and that retrofitting can be done at any time. In his opinion, our building authority wouldn’t check this anyway.

A well-known architect said it doesn’t really matter, as long as some kind of energy certificate is issued. And if my architect prepares this, I would be in the clear.

How can I achieve this 15% without including the mentioned elements that are not yet installed (ventilation system, external insulation, etc.)?