Development plan, tiled stove with protruding chimney

Hello everyone,

I urgently need a well-founded opinion about our development plan. Please no assessments that are not 100% based on knowledge, as this might only worry us even more.

We have had a tiled stove with an exposed stainless steel chimney installed in our house. The chimney sweep, the stove builder, and our energy consultant have given the project the green light. Now, by chance, we looked into our development plan (from 1975) and found the following two passages that worry us a bit:

To supply the terraced and detached houses, emission-free heating systems must be used.

All ancillary facilities according to Paragraph 14 of the Building Use Ordinance are PROHIBITED.
In Paragraph 14 it says: Systems for renewable energies are ancillary facilities.

Now we are somewhat afraid that we had the whole thing installed for nothing.

Are tiled stoves/fireplaces/wood stoves that stand in the living room considered "systems for renewable energies" or are large systems like wood chip or biogas plants meant by systems?

I also couldn't find a definition of emission-free heating systems on the internet. Our central heating runs on gas.

Further statements such as mandatory connection or combustion ban of solid materials are not in the development plan.

Thanks for your help

Best regards