Photovoltaic system: Costs, saving potential? - Experiences?

Where do you want to know that from, just the region makes a 50% difference.

With photovoltaics, however, it's quite silly, because the Renewable Energy Sources Act compensation is the same nationwide.

to the south a double-wing terrace access and a floor-to-ceiling window of normal width. Then another double-wing terrace access to the west. The room is 48.5m2

Thanks for the info. Same ratio as with us. I was interested because we don’t even come close to reaching 27° on the nicest sunny days without shading, at best it gets 2.5° warmer in winter for a few hours. It’s probably due to the more massive construction on our side, or you simply have more sun at the top.

Can your heat pump also work with the SHM2.0? We have it so that the SHM releases our heat pump, but we only increase the hot water, the underfloor heating only by 0.5K more. When the sun shines, it is, for example, 27°C in the living room alone because of the sun (yesterday).

Um, a Daikin Compact Ultra should be able to do that. I'm just not sure if you need the LAN adapter for Daikin.

Was there anything else included that justifies the price? Good 2000€ too expensive, net, imho

Yes, those were then deducted for me for a 9.9 system south orientation

In the first year you make a loss and even get a tax advantage, if the photovoltaic system is then recognized as "hobby" you don't have to pay anything anymore - but I am still waiting for a response from the tax office here, let's see if it works.

If that "works," then congratulations – because the tax office will retroactively determine hobby status from the day the business was established, so the losses of all business years will be disallowed for tax purposes. Back payment! I hear you coming!

Manageable. If the KUR has been waived, it becomes more interesting regarding VAT if hobby activity is assumed. I always point out to the tax office that the first year with full remuneration is actually the 3rd year of operation, so that nobody gets the wrong idea there.