Which heating system for the 200 sqm new building?

Hello ChaLeLa,

Tell me, is gas as a heating source excluded for you?
May I ask which architect you are building with? I’m just curious because we also planned and built with an architectural firm from Regensburg.
Regards

Sell. It is precisely the electricity in the summer that makes the system economical. Self-consumption is a bonus on top.

This currently contradicts the information I have and also the calculations for our planned photovoltaic system. Energy consumption makes the system profitable; by selling, we would hardly break even.

Currently contradicts the information I have and also the calculations for our planned photovoltaic system. Energy consumption makes the system profitable; by selling we would hardly break even.

The tools used by solar installers tend to make everything look good.
If it is barely profitable for you with the feed-in tariff, either the location is really bad or the system is simply (much) too expensive.

My system is expected to pay for itself after 10.5 years, only through the feed-in tariff, provided no major damage occurs in between (where various insurances would apply, depending on the damage). Self-consumption is just the icing on the cake.

No fear of "exotic solutions" - preferring heating with renewable raw materials makes sense. Wood log gasifiers with Stirling engines are, alongside pellet heating, also an interesting option.

Eigenverbrauch ist da nur das i-Tüpfelchen.

That is the photovoltaic world from many years ago. Meanwhile, the feed-in tariff is only about a third of the self-consumption price. Modern photovoltaic design is mainly focused on self-consumption.

Anyone buying photovoltaics for a heat pump can try drawing a coordinate system. January to December on the X-axis and the electricity consumption of a heat pump on the Y-axis. Ta-da: The heat pump needs the most energy when the photovoltaic system produces the least. In the wording of , the bracketed “slightly” before supported is very well placed.

In photovoltaics, besides the pure amortization calculation, there are a few other considerations regarding the choice of system, should it be installed on the roof. How do you feel about high voltages (electrosmog) over bedrooms and children’s rooms? What fire load entry will you record? How much more expensive will the insurances be? What do you think about the appearance of your house? What value will your house have with a photovoltaic system in 10 years?

I think these are simply details. The motivations are different and everyone may calculate and forecast as they like. I would generally separate photovoltaics from the heating consideration, but with a heat pump, photovoltaics make even more sense than without.

I could not justify my upcoming photovoltaic system without the feed-in tariff; nevertheless, I have invested here and there in appearance and technology I prefer, which probably somewhat reduces the economic efficiency.

This is the photovoltaic world from many years ago. Meanwhile, the feed-in tariff is only about a third of the self-consumption price. Modern photovoltaic design mainly focuses on self-consumption.

So if a system already yields almost 10% gross return with just the feed-in tariff, then that’s probably complaining at a high level, isn’t it?
My calculation is current and not from many years ago.

With photovoltaics, besides the pure payback calculation, there are a few considerations regarding the choice of system if it is to be installed on the roof. How do you feel about high voltages (electrosmog) above bedrooms and children’s rooms? What fire load registration will you enter? How much more expensive will the insurances be? What do you think about the look of your house? What value will your house have with a photovoltaic system in 10 years?

Sorry, but that is complete nonsense.
Electrosmog… where do you think that comes from? Although I already regret asking, I know you belong to the healthy living faction.
Fire load registration? Nonsense. Do you have a thatched roof?
Insurances? €0. It’s included everywhere, you only have to select it. Otherwise, no one forces you to take out any insurance. If you do want one, you can deduct it as operating expenses.
Appearance? I have a flat roof. Nobody sees it. Otherwise, everyone buys anthracite tiles anyway, so an all-black system is actually the optical highlight of the whole thing.
Value? Great! After 10 years, taking over a used system at the feed-in tariff rate from 10 years ago—that would be a return hit. Otherwise, you can dismantle old systems; the tiles on the pitched roof will look clearly better underneath than the tiles without photovoltaics on top.