Construction costs are currently skyrocketing

Clarification question: Do you heat with electricity or why do you emphasize the heating period so much? Can you also post the graphic for July for comparison?

We heat with a ground-source heat pump. I emphasize the heating period because that is the time of year when such a household has significantly higher electricity demand around the clock. So actually peak season for a storage system.

Here July 22 – a fairly productive month. Unfortunately, July 21 is not in the log; last year was worse.
You can clearly see a significant surplus. But: Note the consumption in red. That is the maximum potential that a storage system could have covered.

What roof pitch do you have? Probably around +/- 35°?

This is our household consumption in the "coldest" month of the last heating period. NRW, 6.82 kWp photovoltaic system facing south, brine-water heat pump. No storage available.
Note the energy generated by photovoltaics and the amount of feed-in.

My demand for photovoltaic storage is still very low.

Hi, thanks for sharing.
Does that mean out of the 737 kWh electricity demand, you purchased 689 kWh despite the photovoltaic system?
That would mean 93% purchased. That’s quite a figure, I would have expected at least 60-70% from the gut.

That would mean 93% was bought. That’s definitely a big number, I would have expected at least 60-70% off the top of my head.

LOL

Comparison of 10 kW system, WSW orientation
Yield 01/2022: 170 kWh
Consumption 01/2022: 1,450 kWh (incl. hybrid charging), of which 100 kWh was self-consumed

=> Ratio 58% of produced electricity (only 7% of total consumption was self-produced), but only thanks to the e-car. There are either days when you produce (almost) nothing or days when the sun shines strongly and you can’t consume the electricity through heating/house.

LOL

Comparison of 10-unit system, WSW orientation
Yield 01/2022: 170 kWh
Consumption 01/2022: 1,450 kWh (incl. hybrid charging), of which 100 kWh self-consumption

=> Rate of 58% of the produced electricity (only 7% of total consumption was self-produced), but only thanks to the e-car. There are either days when you produce (almost) nothing or days when the sun is shining hard and you can’t consume the electricity through heating/house.

When I look at the diagrams from you and guckuck2 for January 22 (despite different photovoltaic sizes and orientations), I notice that the daily yield on most days is <<5 kWh.
I estimate the daily demand with heat pump, but without e-car in January at 25 kWh.
=> would mean that with these numbers, bidirectional charging via e-car would also bring almost nothing, because with these photovoltaic system sizes you can never charge three days in advance.

I estimate the daily demand with heat pump, but without electric car in January at 25 kWh.

I have not broken it down, but only recorded the total consumption including hybrid. Note: My house was not yet insulated from the outside, heat pump supply temperature still max. 30 degrees):