Air-water heat pump current consumption and data

Of course I understand that (I am, among other things, a business economist). On the other hand, I have also disregarded the (presumably) rising electricity prices. Naturally, you can also calculate an equation with X unknowns "accurately" to the second decimal place ;)

But I don't care: in the end, I save/get about €2,000 p.a., guaranteed for twenty years. Just subtract the €1,000 depreciation p.a. - then it's still 5% (minus interest, if financed externally)... you can invest money worse these days.
And yes, technology can also break down in twenty years, then it will just be less. But negative? I wouldn't know how.

Since my system (14.4 kW peak with 10 kWh storage) cost almost exactly 20K€, here are my numbers:

Hello Hangman, The price is not bad at all. Would you possibly reveal where and when you ordered? For that money, I would also gladly ;)

- approx. 4,000 kWh self-consumption (equivalent to approx. €1,200 p.a.) - approx. 9,000 kWh feed-in (equivalent to approx. €800 p.a.)

What about taxes, depreciation, etc. (also for self-consumption)? With storage, you will at best break even between 15 and 20 years. I don't want to speak badly about photovoltaics, but that calculation is too simplistic.

Especially where do you get such a large storage and 14kwp for these prices? Normally, you'd easily pay about 50% more.

And the electricity price only becomes theoretically more expensive; thanks to switching bonuses, it has been almost constant over the last 5 years. The political trend is currently towards lowering the price per kWh and imposing levies on fossil fuels through the CO2 tax. Nobody knows what will come! The past is not always the best indicator for the future.

So today was one of those days again. Outside it was very cold with 0 degrees during the day but full sun. Inside the house 23 degrees, almost unbearable. The heating then turned on and we had to ventilate all day. In my opinion, that is energy waste?

But I have no idea how to counteract that. How do you do it, the same way?

So today was one of those days again. Outside it was very cold with 0 degrees during the day but full sun blasting. Inside the house 23 degrees, almost unbearable. The heating then turned on, and we had to ventilate all day long. In my eyes, that is energy waste?

But I have no idea how to counteract that. How do you do it, the same way?

For me, it was 26.1 degrees on the ground floor today, currently it is 24.7 degrees. The heating has been off since 1 pm and won’t be turned on again until tomorrow noon.

How do I deal with it?! Well, I don’t ventilate excessively and the blinds are up. Though with the sunshine, that's not even necessary since everything runs for free, but even if it’s free, it would still be wasteful.


Today I tried to reduce consumption as much as possible. Yellow is feed-in, the rest is consumption.