Photovoltaic system air-water heat pump - profitability single-family house KFW55EE

Also very satisfied here. Can gladly continue like this.

Whereas today the record from the 12th was not broken. On that day, 29.7 kWh came from the 9.13 kWp roof. Today, "only" 25.7.

Thank you for the answers, sounds good. No air conditioning, yes ventilation. A wall box is also to be installed in the garage, hopefully the KfW subsidy will come back. But I can charge for free at work. Bidirectional would be nice, then I would have a 60+kWh battery, but the boxes are still way too expensive. ;)

That would be nice, you could basically take the electricity from work home with you ;) The Kia EV6 can deliver 3.6KW from the battery (approx. 77KWh). So you could at least supply your house basically at night. It works, but unfortunately politically (still) not wanted and therefore "forbidden."

You won't tend to get much from the photovoltaic system in winter. In nice weather, you'll heat using solar gains and will probably get too warm rather than too cold. In bad weather, the photovoltaic system provides relatively little electricity compared to the heat pump. The low roof pitch further reduces efficiency in winter.

For profitability, it's more important whether you can also use the electricity in summer. In other words: Are you home during the day? With bidirectional charging, the same question arises. How often does the electric car leave in the morning and only return in the evening?

So today was freezing cold and I produced 38.5 kWh with my approx. 6.5 kWp mini system :). Since I was home briefly in the afternoon and plugged in the BEV to "tank up on sun," self-consumption is a bit higher than usual. But that's right, I have photovoltaics at home and the car is at the company :rolleyes:. That always annoys me when I feed in instead of charging. The next office from autumn will probably get 2 systems of 30 kWp each :p

We have several systems in the family; soon there will be 6. That way we have some comparison regarding orientation and roof pitch. 45° with south orientation is probably more efficient in winter (when most heating is needed). Otherwise, shallow pitches are better in summer (when cooling is desired/needed) if both sides can be equipped.

It works, but unfortunately is (still) not politically desired and thus "forbidden"

A lot will have to change in the coming years. So I have not given up hope yet. Not least because VW is entering the business.

A lot will have to change in the coming years. So I haven't given up hope yet.
Not least because VW is entering the business.

slightly off-topic: :D :p VW will no longer exist in the car market in at most 5-6 years. They were also once involved with combined heat and power plants when they thought the market was ready. VW is technologically easily 5 years behind, and not just behind Tesla. Speaking of Tesla, paid for the Y today, delivery on March 17. It will then be the second company BEV alongside my "small" MX-30.