Energy Saving Ordinance for Summer Heat Protection

Just as the Energy Saving Ordinance requires solar collectors to be installed with gas heating systems, the number is also determined by the Energy Saving Ordinance calculation

But the Energy Saving Ordinance does not do that at all. You can definitely build in compliance with the Energy Saving Ordinance with a gas heating system WITHOUT solar thermal. You just need a renewable share (for example, controlled residential ventilation with heat recovery is sufficient) and may need to take compensatory measures, for example, stronger insulation, windows/doors with a higher U-value. Quite a few here in the forum have done this as well. Whether this makes sense in individual cases has to be decided case by case. It is possible, though.

To the person asking:
As far as I know, the Energy Saving Ordinance does not require you to install roller shutters on the ground floor either. But I might be wrong here. The Energy Saving Ordinance more likely, as has already said, demands compliance with certain requirements but rarely specific measures. It is more about the assessment of building technology (energy generation, (primary) energy demand, requirement for renewable shares, ...) and the building envelope (insulation, transmission heat losses, U-values...). Specific measures like your roller shutters are rather means to an end to meet the requirements. However, there may also be alternative measures to achieve this goal. The energy consultant and/or architect should be familiar with this and show creativity. It is also possible that there is no alternative and therefore you cannot do without roller shutters. I just wanted to clarify that it is very likely (subject to error) NOT explicitly stated in the Energy Saving Ordinance that you must install roller shutters on the ground floor (or elsewhere) – for example, we don’t have a single roller shutter. But that came across a bit in your question, so here is the note again.

We have no roller shutters anywhere and a floor-to-ceiling window element with a door facing SW. Additionally, several normal south-facing windows. No one requires that. And it is completely unnecessary. We have a solid house, stone on stone, it is not warm or stuffy inside. But very pleasant. Karsten

We have no roller shutters anywhere and a floor-to-ceiling window element with a door facing SW. In addition, several regular south-facing windows. No one requires that. And it is completely unnecessary. We have a solid house, stone on stone, it is not warm or stuffy inside. But very pleasant. Karsten

That is the small, subtle difference, Karsten: Your windows, not floor-to-ceiling, are distributed according to standards across different rooms.

And there was a new standard in 2016.

: yes, that is clear, but those are additional points for the gas heating. There are almost always ways to design it in compliance with the Energy Saving Ordinance.
Our structural engineer did the Energy Saving Ordinance calculation, but architects do it too.

I would clarify with them what can be done there.

In addition, there are of course roller shutters for corner windows. I see them again and again in new residential areas.

Or as already mentioned, [Raffstores].