Experiences with heat pumps and photovoltaics?

Hello everyone, I already briefly mentioned in my introduction post that my wife and I have big building plans that we hopefully can finally implement in the next few years. I don’t know anyone in my close circle of friends who is building, so I’m hoping for some help here, because of course I have 1000 questions on various topics! We are currently spending a lot of time thinking about how we want to heat and actually quickly agreed that we want a heat pump for heating and for hot water. I find the topic very complex, but if I understand it correctly, such a heat pump mainly uses environmental energy but also a small part electricity. That’s why we would like to combine the whole thing with a [Photovoltaikanlage]. Does anyone of you have that and can report? Do you think it’s a good idea? I’m grateful for any input!

We also want an (air) heat pump, but initially without photovoltaics. We want to wait until the storage options improve and it becomes more worthwhile. The electricity costs of modern heat pumps are actually quite manageable. My parents have had an air heat pump for several years now (from a time when they were not so advanced yet) coupled with a water-heating fireplace...which is turned on from around 0 degrees, so even this "old" heat pump is then worthwhile.

We do not have a photovoltaic system. If the pump is running at maximum capacity, you have no electricity from the photovoltaic without storage.

Otherwise, just google Autark mit Passivhaus.
There the exact data of a single-family house is listed.

... uses such a heat pump mostly environmental energy but to a small extent also electricity. ...

The majority comes from electricity, a small part from the ambient air, yes.

A photovoltaic system will not be able to sufficiently support the air-to-water heat pump in winter (from the beginning of Nov. to the end of February) in the slightest, because only 10% of the summer output comes from the roof in winter, and the air-to-water heat pump requires the most electricity in winter.

The combination makes sense, but not in this regard.

Inquire about a brine heat pump. In my opinion, it is currently the best alternative. For the drilling, you get an innovation grant of €4500 + €500 from the baff, so the drilling is almost paid for and you can heat cheaply. The heat pump costs about the same as the air-water heat pump. Best regards