Photovoltaics - Questions about Tax/Business

hey You certainly know about the PV system, right?! How many kW do you put on your roof? I am also planning a photovoltaic system but have to admit that I am a bit overwhelmed by it. Where is the best place to get information? Ed3c was offered to me by a solar installer. Do I necessarily need a storage system at the price of 9,600 euros?!

Would the admin be so kind as to explain to me why I am receiving another warning with the words "THIS IS THE LAST WARNING"? I haven't linked anything at all. One has to understand you...

I have to apologize. Although I did not post a link, I probably mentioned another forum too clearly.

I will now reply here as completely as possible so that the user is helped.

1) The E3DC like other battery storage systems for photovoltaics may be nice and good, but usually as superfluous as a goiter! (unless you build according to KfW40+ standard)

2) Fill the roof sensibly! Don't forget north-facing roofs if the roof pitch is under 30°.

Calculate the expected yields with an appropriate tool.

Currently, prices per kWp ready on the roof are apparently somewhat higher (supply & demand), but should certainly be at around net 1100-1200 € maximum per kWp WITHOUT battery. If well above 10 kWp (don’t be afraid of that!), then something around 1000 € or less is possible. There is NO 10 kWp hurdle, only a small threshold (proportional Renewable Energy Act). Between 10.01 and 12 kWp is inconvenient, then build 9.99. Up to about 35 kWp is O.K., then limit with the inverter to 30 kWp due to additional effort/costs.

I really am afraid to mention that word PVG.. even though it is neither advertising nor a link, but I like the forum and I don’t want to be locked out.

As said, more knowledge elsewhere

I have to apologize. Although I didn’t post a link, I probably mentioned another forum too clearly. I will now answer here as completely as possible to help the user. 1) The E3DC, like other battery storage systems for photovoltaics, may be nice and good, but as a rule, it’s as unnecessary as a goiter! (unless you’re building to KfW40+ standard) 2) Fill the roof sensibly! Don’t forget north-facing roofs if the roof pitch is under 30°. Calculate the expected yields with a suitable tool. Currently, prices per kWp installed on the roof seem to be somewhat higher (supply & demand), but without a battery it should definitely be around net 1100-1200 € maximum per kWp. If significantly over 10 kWp (don’t be afraid of that!, then it can also be about 1000 € or less) There is NO 10 kWp barrier, only a small threshold (proportional Renewable Energy Act). Between 10.01 and 12 kWp is awkward, then build 9.99. Up to about 35 kWp is okay, then limit at the inverter to 30 kWp due to the additional effort/costs. I’m honestly afraid to mention that word PVG.. although that’s neither advertising nor a link, but I like the forum and don’t want to get locked out. As said, more knowledge elsewhere

All good! I have received the warning and so far don’t know why?! I can’t respond to it either. Well. So it’s not your fault.

I have to apologize. Although I did not post a link, I probably mentioned another forum too clearly.

I will now respond as fully as possible here to help the user.

1) The E3DC, like other battery storage systems for photovoltaics, may be nice and good, but usually as unnecessary as a goiter! (unless you build according to KfW40+ standard)

2) Make the roof sensibly full! Don’t forget north-facing roofs if the roof pitch is under 30°.

Calculate the expected yields with a suitable tool.

Currently, prices per kWp ready on the roof are somewhat higher (supply & demand), but should certainly be around net €1100-1200 max per kWp WITHOUT battery. If significantly over 10 kWp (don’t be afraid of that!), then it can also be around €1000 or less.

There is NO 10 kWp hurdle, only a small threshold (proportional Renewable Energy Act). Between 10.01 and 12 kWp is awkward, then build 9.99. Up to approx. 35 kWp is OK, then limit at the inverter to 30 kWp due to additional effort/cost.

I am really afraid to mention this word PVG.. although it is neither advertising nor a link, but I like the forum and I don’t want to be locked out.

As said, more knowledge elsewhere

I already have an offer. 11T for 8.58 (26 panels). East/South roof 24 degrees. How much do the panels weigh per m²? Do you know that? The structural engineer said I can load the roof up to 15 kg/m². Could you send me a PM?

In my opinion, a storage system only pays off below 600€/kw capacity, and the current storage systems are still clearly above that. That's why we don't have a storage system and will retrofit one at some point when the storage costs have decreased.

I have a system with 19.4kw because of a hip roof. So I can't get that much on the roof.

And overall, I have produced 9.8 MWh since January so far