Construction costs are currently skyrocketing

And that once again shows that no one is allowed to complain about high electricity prices. Everyone could have simply invested appropriately on the exchange and thus refinanced increased costs. But of course, as always: Whoever finds the irony in the above statement can keep it ;-)

Whereas building a photovoltaic system as a hedge would have been the right way... whoever trades commodity contracts with rollovers etc. privately is hopefully deeper in the business, most make a loss doing so.
'Contango' WTI oil situation 2020 as an example.

There isn’t any in there either. I usually mark them with Irony [ON] and [OFF]

Yes, he was used to the heat pump being on the yard 4 weeks after ordering. He was still assuming that now. Actually, the house acceptance was planned shortly before Christmas. The heat pump was ordered sometime in August.

Our heat pump was ordered in April and is arriving this week.

Today I spoke with the municipal utilities about water. If I apply for the connection <5m this year, it costs €1730 all in. If in 2023 then ~€3300.

By the way, electricity. How is it when the electricity contract (31ct/kwh) with the 3 big letters expires on 30.11.22 and I have a price guarantee until 31.12.22 and tacitly renew it. The contract is automatically extended by 1 year without cancellation. According to my understanding, the provider must adhere to the price until 31.12.23, right?

Building a photovoltaic system as a hedge would have already been the right way... anyone trading commodity contracts with rollovers privately hopefully is more deeply involved in the business; most make losses doing that.
'Contango' WTI oil situation 2020 as an example.

But that is also a good example that the evil speculator is only boiling water. At some point, they have to sell to someone who actually takes the good at that price, be it oil, gas, electricity, stocks...
I believe the gas situation for winter is quite well under control. Storages are overfull, LNG terminals are coming into operation, and tankers are waiting off the coast to sell. If no pipelines to Norway blow up here, Russia will probably be completely replaced this winter. I never would have expected that in February, and despite all the criticism of the government's back-and-forth bungling, that is truly an achievement that should be appreciated.

How is it when the electricity contract (31ct/kwh) with the big three letters expires on 30.11.22 but I have a price guarantee until 31.12.22 and tacitly extend it.

However you managed to get this situation... Then you extend and have a price guarantee until the end of 2022. So for 11 months you get a new and probably significantly higher price.