Air-water heat pump current consumption and data

The effort is (in my case) ticking the box "forecast-based loading" in the monitoring... took about 5 seconds.

And why should I go hard at 70%, just because it's "only 3-5%" of the annual yield that gets lost as a result?

With E/W roofs, of course, it's different. I just have a pure south-facing roof at 38°, completely full with 45 modules. And I couldn't resist the storage - politics made me an offer I couldn't refuse 8-)

On the topic of 40+: In that case, you can of course take the storage with you. Even if it rarely becomes truly economical on its own. Photovoltaic systems make money, storage costs money. Even the gifted ones.

I would like to see the calculation. But preferably in another thread. The derailing here has been going on a bit too long. ;)

I think memory is being spoken of too negatively here as well. There are already offers where the memory is economically viable. The trend is clearly visible.

Be careful with the battery when it comes to money. I’ve had mine for almost 3 years now and can only get 88% of what I previously stored out of it. If you are approaching it financially, you should better include that in your preliminary calculations. In my opinion, the battery already included in the electric car is probably the better alternative – if you want to drive such a thing...

The first models with bidirectional charging are already in the pipeline, I’m sure that will become a standard. But it will still take about 5-10 years. That will largely make the home battery obsolete, since with home office there is always an e-car parked at home anyway.

Since I have only a limited roof area (south), I also hope that the modules will become more powerful. I would definitely like to have more than the currently possible 7 kWp on the house.

The grid operators have successfully prevented V2H (vehicle to home) so far. In Germany, it is simply forbidden at the moment. They probably want to reserve the business of ((decentralized) electricity storage) for themselves. Until then, progress will be blocked wherever possible. Like in every dinosaur industry

Even though I benefited in this case, you are unfortunately right. For example, I also get the charging station de facto completely paid for even though I don't have an electric car. It's not about sensible initiatives at all, but about sugarcoating political measures ("we have promoted xyz kWh of renewable energy," "we have built xyz charging stations," or in the case of KfW double funding of granny flats "we have built xyz apartments").

In photovoltaics, it would make much more sense to abolish all the bureaucracy (commercial, VAT obligation, depreciation, grid connection requests, 70% hard/soft, smart meter, etc. pp). That would, in my opinion, bring more.

The funding goal has been achieved – building more KFW40+ houses. That the initial push in your case could have been smaller is irrelevant. One could even say the target was overfulfilled since you yourself have already aimed for the desired standard ;-) If only every subsidy would work that well ...

By the way, I’m also enthusiastic about the wallbox funding. It’s being drained like crazy. I’m already curious about the moment when we have more private charging points than BEVs on the roads ;-)
They tried to prevent this by not allowing the funding for new buildings. But it’s easy to circumvent. As a result, everyone installs a free charging point without having a BEV. And those who already had a BEV have probably already taken care of charging.
By the way, I’m now dismantling my charging point and rebuilding it with funding. The old WB is being sold, the new one works better in the smart home.
StUPID ;-)