Which heating system? Air heat pump / Gas / Geothermal

130 € without household electricity for new buildings that were undersized is not so unlikely – we have also read about horror scenarios where they consumed their 4500 - 6000 kWh (topic Nibe and Viebrockhaus). But that will probably get better. No one says that gas is bad, right? Even from an ecological point of view, the BUND says that heat pumps that do not achieve a seasonal performance factor of 3 are not really environmentally friendly (this may have changed somewhat as the electricity mix shifts/has shifted). However, if you now decide on a well-designed brine-water heat pump with a seasonal performance factor of 5 and the 5,000 € subsidy from the BAFA (new for new builds), they are no longer so uneconomical... The heating load of your house is relatively independent of the number of users, as it concerns the transmission heat loss of your house (+ ventilation). A flat rate per person is then added for hot water load, but that is not so significant.

Hello,

Oh, and regarding the "green" electricity. I naturally have to trust the "certificates."

That's what I assume.

Some time ago, I tried to dig deeper into this topic, which is not so easy. What I take away for myself is that - if an end customer - for example - is not connected directly (i.e., without detour) to the wind turbine, they always receive "gray" electricity; the line does not distinguish but exclusively transports. Only the "extra" cost per kWh is mandatorily invested in the expansion of renewable energies to exert pressure on the electricity-producing industry.

That's why I smile; regardless of the fact that I think it's good that RWE and the like have to rethink.

Rhenish greetings

the grid does not differentiate, but solely transports. Only the "extra" cost per kWh is mandatorily invested in the expansion of renewable energies, in order to put pressure on the electricity-producing sector.

But for us consumers, this is at least a way to support green electricity, or to help expand it better with our few extra cents.

I find that okay. But I am also the one who separates old glass by color, even though it is supposed that later everything ends up together in the large container.

I do what I can, because I will never be a world improver anyway.

Hello Yvonne,

But at least for us consumers, this is a way to support green electricity or to help it expand better with our few extra cents.

In my humble opinion, that's how you do it...

I replied because, to be honest, I’m fed up with any one-sided view. Neither can gas be praised to the skies while ignoring the side effects of its extraction, nor can a heat pump be seen as the ultimate solution.

Rhineland greetings

Then I think we pretty much agree. I agree with you, the pressure on the electricity giants needs to be increased. But that is another topic. And at least this way I can "participate" in it.

My "dream house" would indeed be a completely free-from-external-energy-sources house, so 100% "self-sufficient". Really such that I would practically no longer need to lay any connections.
But unfortunately, that is still way too expensive and at least for now I cannot afford it. But the time will come eventually!

You could have done without solar and built according to the 15% rule.

Would you briefly explain this rule? (Google mostly returns results about equity ratio, which is probably not what is meant here.)