Photovoltaic system: Costs, saving potential? - Experiences?

did you deduct the input tax on your system or did you choose the KUR?

nothing yet, system will only be installed in March and feed-in only in May/June.

But purely mathematically, the pre-vat option with subsequent switch to KUR is the best. Bureaucratically, however, it also involves more effort. I still have to think it over.

The fact is, for our house (from 2021) it may be that we no longer have to worry about the photovoltaic question yes or no. If there is no longer any feed-in tariff, then the question "When does it pay off?" becomes irrelevant and it simply becomes unprofitable for private houses. It also has something positive. The roof tiles come back more into prominence. However, the negative is that you can no longer make money with a photovoltaic system / securely invest your money.

You mainly have the effort in the first year because a new establishment leads to monthly pre-registration. In the second year, you submit an application to no longer have to do pre-registrations; then only the annual VAT return remains. I use the tax saving declaration in the Plus version, which includes a photovoltaic module. It works well.


Then you have to recalculate. The era of storage begins then. Currently, when calculating the profitability of a system with storage, you have to deduct the waiver of the feed-in tariff if you store and use it yourself. But of course, it won't be as rosy as it is now.

- my calculation: amortization in the 11th year (regardless of 2% or 0% electricity price increase) incl. VAT & income tax (20 years regular taxation, no KUR)

If the Renewable Energy Act remuneration is discontinued, a free market will certainly emerge where electricity can then be sold at the stock exchange price. Not necessarily the worst option.