Gas prices - Where is gas still affordable?

You are right, the politicians (those are the ones WE elect) should have really made this easier. I completely agree with you!

When planning the photovoltaic system, some key data is needed first, because the larger the system can be, the cheaper the installed kWp on the roof becomes. Since one-time costs (planning, scaffolding, connection to the electrical system, etc.) only occur "once."

So information about all roofs (roof pitch, size, orientation, obstructions like chimney, trees that can cast shadows, satellite dish, ventilation pipes, etc.)

Also gladly pictures of all roof areas with sketched dimensions including outbuildings (garage, carport)

Then the location (postal code) to roughly calculate the system with PVGIS.

Then a trial version (30 days) of Photovoltaik*SOL for 30 days to find strings (wiring), suitable inverter, etc.

Once the fictional system is put together, unfortunately, it goes into the real world to get quotes. Which is currently anything but fun.

With modules and inverters, you unfortunately have to improvise a bit, but I hope better times will come again?

Let's do it that way until then, then we'll see... We would be happy about some support from people who are even deeper into the topic ;)

Best regards Burkhard

Ok. Here we are again with the complicated topic. I would expect all of this from the solar installer. To be honest, after our build, I have no desire to deal intensively with the next topic. I also thought you wanted to do a rough calculation. So let's stick to my current plan: in 4 to 5 years we will need a new car. Then I will calculate again; maybe it makes sense then in connection with an electric car. Maybe there will also be modules and other parts again.

I honestly have no desire to deal with the next subject so intensively after our construction.