Bauhaus concrete villa with core insulation - experiences

Do we need a photovoltaic thread again?

That seems more plausible to me. It is not clear to me why grids should cope worse with the "goose roast peak" phenomenon on the feed-in side than on the demand side. After all, solar radiation does not increase abruptly either, temperatures rise predictably with a lead time of several hours.

Moreover, the whole thing would only make sense if there were, for example, annual expansion limits. Year 1: 100 GWp installed capacity, of which 70 GWp feed-in capable Year 2: an additional 100 GWp added capacity, of which also 70 GWp feed-in capable. Thus, the grid in year 2 would already have to withstand peaks of 140 GWp, whereas only 70 GWp had to be managed the previous year. Why not plan directly with 100 in year 1 and 200 in year 2?

Also here: flatten the curve. Presumably investment protection for grid operators who do not feel the expansion of renewables driven forward by the high Renewable Energy Act support at full force but always with a time delay. Perhaps still economically sensible (no idea, we will probably never find out), unpleasant for the plant operator from a business perspective, absolutely stupid ecologically.

ökological absolutely stupid

Nevertheless, the official reason for subsidies is the cliimate

I also find it stupid. And also that I have to pay taxes on the electricity I consume myself from my own system (funded with money taxed multiple times) that I was forced to install... If it weren't like that, we would surely have found a solution to install 30kWp or more to become more self-sufficient.

And also that I have to pay taxes on the electricity forced by my own system (from money taxed multiple times) that I consume myself...

You only have to because you want to.

You can also have the photovoltaic system installed without surplus feed-in, then you are not self-employed. This eliminates income tax on self-consumption. But you also do not receive any proceeds from the sale of electricity.
You can also opt for the small business regulation, then you save the VAT on self-consumption. However, you do not get the input tax from the acquisition refunded.

But this is not worthwhile. That is why 99% do it as a self-employed activity with all the tax benefits (!) that it brings.

It is an emotional topic. Having to pay the Renewable Energy Act surcharge on the self-consumption of electricity from the roof feels like VAT on self-cooked food. That simply takes the fun out of it for me. I would rather build another system >0.1MWp for full feed-in or in agricultural use as an eco-financial investment - but not on my property at the house, rather on a farm or by a highway / railway track.