Energy Saving Ordinance 2016 / KFW55 / Gas + Solar in 2016

Ask me again in 6 months, we are starting planning with the architect in a week and want to start construction around August/September.

Oh, that's a pity, I was also very interested to know if it's possible to bypass the solar system. Our construction company said that gas can no longer be built without solar.

You definitely can, it's always a question of what additional investment.

I have now also spoken with an energy consultant who told me that it is possible with a central ventilation system and a bit more insulation.

Correct, that is also one of those things with many where we do not know 100% what we will do. Since I would like to build with a 36.5 T7 MW and controlled residential ventilation, solar may not be necessary.