Mandatory heating rental in new buildings - is that possible?

A one-time construction subsidy and a connection payment of approximately ~25k€ are to be made. This covers the collector construction and connection to the network. Then, depending on the performance of the heat pump installed, a basic fee/service charge for provision is paid monthly for 10 or 15 years, approximately 200 to 280€/month for 6kW. On top of that, the actual heating costs are charged here, which are only about 8 cents/kWh.

From a current new development area with central heat supply, I can say that an additional 15,000 € must be paid upon purchasing the plot for the development with heating plant and heat network. However, this already includes a pellet-fired heating plant, so no additional heat pumps are necessary. On top of that, customers receive heat for an additional basic price of 15 € / month. The builder procures a transfer station themselves (6,000 - 8,000€ including installation) and the heat price is fixed in advance. I do not know how high it is exactly, but it is supposed to be a flexible price adjusted according to a specified clause based on the development of pellet prices.

Your figures seem very high to me. 25k€ per house connection just for a collector field with pressure maintenance as a heat source for the decentralized heat pumps? So basically a cold local heating network. I don't find 200€ per month for the heat pump that far-fetched. 20,000€ cost +4% interest over 15 years of service life, the annuity is already 1.8k per year. Then add reserves for repairs, that fits.
Are the heating costs fixed? I can't imagine that because the electricity price for 15 years is very unpredictable and the municipal utility will not take that risk. How is it measured? Heat quantity? Electricity meter?
Is the network with the collector field already under construction? If yes, then it was probably built without subsidies. In 2022, there were practically no subsidies for heat networks (because politics are slow), and meanwhile, there are subsidies of over 50% for cold local heating networks, which could explain the high price.

€20,000 costs + 4% interest for 15 years of useful life, so the annuity is already at €1.8k per year. Then add provisions for repairs, and that adds up.

You also have the €25k for the infrastructure. With the drilling and heat pump, you have strong economies of scale, the network is installed when everything is already dug up for development anyway. So it’s mainly materials and only a little extra work. In that respect, that should be enough for the complete infrastructure. No loan is needed, and therefore no interest. For maintenance and provisions, certainly less than €2,000/year is enough, and the plot, there economies of scale also apply.

I can understand your frustration in this regard, it seems like a lot to me too. As WilderSüden writes, especially the monthly base fee of over €200 is quite exaggerated. However, none of this will help you. If the plots are tied to it, you either have to swallow the bitter pill or give up the plot. I also don’t know if I would do this in your place. The already high costs do not exactly inspire confidence. And then becoming dependent on this "system" when the price agreement ends is risky. If you exit after 10-15 years and build something of your own, you will have simply heated expensively for 10-15 years beforehand. At least that’s what my gut feeling says.

I can understand your frustration in this regard, it also seems like a lot to me. As WilderSüden writes, especially the monthly basic fee of over 200€ is quite excessive. However, none of this will do you any good. If the properties are tied to it, you either have to swallow the frog or give up the property. I also don't know if I would do that in your place. The already high costs do not exactly inspire confidence. And then becoming dependent on this "system" when the price agreement ends is risky. If you opt out after 10-15 years and install something of your own, then you will have just heated expensively for 10-15 years. At least that's what my gut feeling says.

Yes, that is also my impression. 15 years of expensive heating and then paying again for new technology or continuing to heat relatively expensively. The municipal utilities will tell me, why, the price per kWh for heat is ONLY 8 cents. You can hardly heat any cheaper... ;-)

But yes, it is tied to the property, eat or die is the motto. It's not just that, I am also not allowed to connect the photovoltaic system to the municipal utilities' technology because of sustainability ;-) . Which looks like this: that I should rather feed in at 7 cents/kWh instead of using it myself, so that the municipal utilities can sell me the kWh fed in at 7 cents again for 37 cents ;-) .

Buy yourself an air conditioner. You can also use it for heating and use the [Photovoltaik Strom] for that, and in summer you'll benefit from it too.

Buy yourself an air conditioner. You can also use it for heating and use the photovoltaic electricity for that, and in summer you'll benefit from it as well.

No, that's even more nonsensical. The OP HAS to pay for the connection, the monthly costs, and then is supposed to install a separate "heating" system in addition? It really can't get any more expensive than that.