Local heating or heat pump - advice / experiences?

Yes, they can mandate the connection obligation, but not the reference quantity. However, every contract with district heating expires eventually. Additional heating cannot be prohibited. The municipality cannot prescribe the energy standard (federal law applies here).

You don't seem to come from the real estate industry. The municipality can now prescribe almost everything (at least in new development areas). It is even now required by the Building Code to consider climate protection and take various points into account in the development plan. What is not possible there is regulated within the framework of urban development contracts, land purchase agreements, and private written agreements/easements. Among other things, a connection and usage obligation for local/district heating (for a certain period) or an efficiency level (I currently have this on the table for a client who must strictly achieve KfW 40). This is legally sound.

As always, of course, workmanship errors are vulnerable...

In the given case, no easement is registered in the land register. What is also an obstacle to my knowledge is that if there is a connection obligation, the company must be publicly/municipally owned and not a private company... In other words, municipal utilities or something like that, but not the wood chip plant of Farmer Erwin

I still have a question about what is more economical/better? Which system has the lower running costs and the better hot water quality?

Enerpipe high-performance storage tank HPDL and a fresh water station

or

"Layered combination storage tank with stainless steel coil for legionella-free hot water preparation"

TAB says it must have at least 600l volume

We get local heating from a big biogas plant, and I don't want anything else anymore. No stress, no maintenance, and it doesn't get any cheaper than 5 cents per kW, and if the transfer station breaks down, it's not our problem.

We get local heating from a large biogas plant, and I don’t want anything else anymore. No stress, no maintenance and it can’t get cheaper than 5 cents per kW, and if the transfer station breaks down, it’s not our problem.

Did the company provide you with the storage or just the transfer station? We’re supposed to pay almost 9 cents per kW... plus a 416€ basic fee

No, storage and such is our topic. The local heating is run cooperatively, the transfer station comes from the local heating.

I believe 120 euros advance payment per month for the "basic fee," plus about 5 cents per kW, went down from 7 cents to 5 last year.

As I said, maintenance costs are almost zero, except for what concerns us (hot water preparation and heating).