Photovoltaics purchased with an existing house - what should be done?

Hello everyone,

We have finally signed and are now homeowners!
Now a few other questions are slowly arising that need to be taken care of.
The notary and the real estate agent advised us to get advice from the tax advisor regarding photovoltaics (both self-consumption with storage and feeding in the surplus). We will do that as well. But is there a guide somewhere on what you need to know about this and what needs to be done? For example, I also have to register with the [Netzagentur]. I don’t quite understand everything yet.

Best regards,
Tobi

Registering a business with the municipality (chances are good they will laugh at you, but you have to try) Registering a business with the tax office (if the purchase price of the photovoltaic system is not listed separately from the house price, you can make use of the small business regulation) buy the big WISO software for taxes with business, it has everything you need. Storage and photovoltaic systems must still be registered with the network operator and the Federal Network Agency, but the solar installer who built the photovoltaic system will surely help you with that. Check if there is a sticker on the system in the basement.

A business license is not necessary, but the entrepreneurial activity must be reported to the tax office. There are some very helpful pieces of information on the internet and in forums, which cannot be linked here. I would use a search engine again.