Construction costs are currently skyrocketing

The question is what the electricity price will do in the medium term. With electricity prices double compared to before, the double photovoltaic price certainly pays off. Especially if in the medium term electric cars will drive up self-consumption in summer

In what kind of Bollerbü do some people live? If the electricity price stays at 50 cents or more in the long term, you will soon be unemployed.

Near or district heating is actually a great idea. However, in a single-family house, I would never make myself dependent on a private company for heat supply...

You would have to commit until 2031, and I can get out and, for example, convert to a heat pump... After that, the price lock naturally also expires...
A heat pump would mean an additional cost of ~4500€. There is also heating electricity here... Peak 20.762 cents, off-peak 15.395 cents

What kind of Bollerbü do some people live in? If the electricity price stays at 50 cents and more in the long term, you will soon be unemployed

Depends on the job ;) But generally, energy prices need to come down so that we remain competitive... Otherwise, I unfortunately also see many companies relocating...

What kind of Bollerbü are some people living in? If the electricity price stays at 50 cents or more in the long term, you'll be unemployed soon

My job is 100% dependent on electricity, but it needs quite little ;) But seriously. Before the oil crisis, nobody could probably have imagined certain oil prices either. After that, it became normal, and the price was higher but everything else was correspondingly more expensive. When I now see that the chemical industry pays 6.5% more despite gas dependency, IG Metall wants 8%, and public service 10% right away... then we are on a good path towards a wage-price spiral. Then in a few years electricity will be twice as expensive but money only worth half. You built the photovoltaic system today at 2000€/kWp, it won’t get more expensive. It doesn’t have to be like that, but it could be

Exactly that is the case, but I will try to have the conversation again tomorrow and ask for an "explanation" of the sizing.

Very good idea and please definitely also ask why he wants to heat with the heating rod. That is complete nonsense. And regarding the sizing and for your orientation... I have an ILM 2-7 for 140 sqm plus basement with underfloor heating and insulation standard not quite at KFW55. I believe my heat pump never runs above 4 kW at outdoor temperatures above 0 degrees.

The topic of heating is also very slow for us. During the plumbing inspection, the plumber mentioned that we would be getting a Stiebel Eltron LWZ 5 S. Today his company installed the heating and it is a larger model: LWZ 8 CS Premium. We have 200sqm of living space and 50sqm of usable/basement space (half-basement, garage in the building).

The topic of heating is also very slow for us. During the plumbing inspection, the plumber mentioned that we would get a Stiebel Eltron LWZ 5 S. Today his company installed the heating and it is a larger model: LWZ 8 CS Premium.
We have 200 sqm of living space and 50 sqm of utility/cellar space (partly basement, garage in the building).

He installed a different one than ordered without asking?
Single contract?
And is it supposed to cost more then?