Power consumption of a heat pump

In June, for example, I had 1539kwh. The system produces about 12000kwh per year. It has been running for 3 years now. And since you mentioned the investment costs. For the 10kwh, I paid €9,000 net. If you think that is a fairy tale, that's your problem. But those are the numbers.

Your numbers cannot be correct.

My photovoltaic yield in June was 900 kWh with a 7.5 kWp system. Your system with 10 kWp had a yield of 1539 kWh. That may be possible.

But I only had 3.5 kWh today. If you had over 21 kWh yield today, then you should have around 200 kWh per day in summer.
That would be 6000 kWh per month. None of this adds up.

In December, you calculate about 10 percent yield compared to June or July. It fits for me, but unfortunately not for you.

You can say what you want about having 20 percent yield in December, measured against the July values.

What is supposed to be wrong with that? Today was a very sunny day here. Apparently not for you. We often have sunny days in winter. And in summer, between 60 and 70 kWh per day are possible. I can't quite understand how you get to 200 kWh, but I can assure you that my numbers are correct. Whether you believe it or not, I don't really care. ;)

Today there were 21.8 kWh here.

I’m really shocked! I live in the same area - Lower Rhine/Rhineland. With the same system, I only had 8.2 kWh production. Cry.... Was the sun out earlier for you today? Here it was still cloudy in the morning.

A consumption of 50 kWh daily is completely normal for the months November to February.

Honestly, that’s total nonsense - at least without an e-car. With an e-car and about 400-500 kWh consumption per month, I’m at 850-1,200 kWh during the time you mentioned. Home office, waterbed, heat pump, e-car = 30-40 kWh. Without e-car, 30-50% less daily consumption.
I also wouldn’t know how a normal household is supposed to consume 2 kWh per hour. Even in an old building with a heat pump and no insulation, that’s more than difficult.

For example, in June I had 1,539 kWh.
The system produces about 12,000 kWh per year. It’s been running for 3 years now.

What kind of system and orientation do you have? With a SSW orientation, I only reach 1,428 kWh in June and about 10,000 kWh per year (but this year was bad...). I absolutely don’t manage even 70 kWh per day. Do you have a 10 kW inverter that is unrestricted? Three years ago, the 70% rule still applied, so 70 kWh per day shouldn’t really be possible.
The price was okay for the time - I paid that too.

I am west of Cologne. The 10kwp are oriented directly south at a 45-degree roof pitch. They really produce a lot in winter. Luckily, I never had the 70% throttling.

Crazy. You have to be almost brain dead to argue about the meaning, purpose, and sizing of your photovoltaic system based on its daily performance, especially in winter. That would be like two diesel drivers arguing who were both on the A2... but one alone and empty at 100 km/h, the other fully loaded at 180 km/h. That is the (intellectual) level being displayed here right now.

For this (good) reason, there are statistics. They provide us, for example, with average values over many years... And these state that in December you can only expect about 15% of the yield from July from photovoltaics. That MyGoodness had a day with a bit more... neither the statistics nor anyone else except MyGoodness and RotorMotor care about that.

Also, the claim that a south orientation at 45° would be optimal is not true. You reach 100% in a south orientation at 28°. If you start counting peas and portraying others as fools, MyGoodness...