Photovoltaics at any cost - current situation and offers

No no no no no no no no no no no no no no no no no no no no no

Think about the battery's lifespan... every kWh that goes in and out of the battery costs you money! In this case, with such a huge difference, it might still be worth it, but you should calculate that individually...

That's clear. Sometimes I already had deltas of 60-70 cents per day. With LiFePo4 batteries, the situation regarding charge cycles looks quite good nowadays.

The question is also how much the memory ages purely due to time, even with few cycles. Somewhere in the combination of the two parameters lies the answer as to whether it is sensible. I could hardly calculate that at the moment. With the commonly used 5000-10000 cycles today, I would tend to advocate for charging from the grid.

I didn't even know that was possible. So there's a button or does the app then say, please download from the network now?

I didn't know that was possible. So there's a button or does the app then say please load from the grid now?

No idea if something like that exists out-of-the-box. I program it myself (the logic based on the solar forecast, price prediction, consumption curve, etc.). Of course, an electrician has to enable this possibility. From what I read online, others have done this too. You just have to make sure that the stored electricity is not fed back into the grid... That's "forbidden" :cool: Well, whoever is stupid enough to buy for > 20 cents and then sell for 8 cents... Please...

Because of the 8 cents... Does anyone have experience with direct sales of self-generated electricity? How does it work? I assume feed-in tariffs are no longer possible then? There are supposed to be intermediaries for that.

Well then I hope for you that if one of the two breaks down (battery or inverter) you don't necessarily have to replace the whole thing or that the manufacturer still exists then. :p You always throw in random bits here. Someone interested in batteries won't get anywhere with that. So tell me, when did you buy it, how big is the battery, how much did it cost you, and how many cycles do you get per year? Or how much do you charge in and how much do you get out?

I hope so too. :p I basically have a 20-year warranty on the device, but still, there is, for example, a deductible in case of a defect within the 20 years. In the end, it’s all speculation and hoping that everything turns out the way you calculated. Whether the battery was really worth it, I will only see after 10 years. Just briefly to your question about the key data. Battery cost: €6,000 Size: 10 kWh Purchase: May 2020 Charged INTO battery in 2021: 2653.4 kWh Discharged OUT OF battery in 2021: 2607.0 kWh Otherwise, I already started a thread on the topic. https://www.hausbau-forum.de/threads/einsparung-pv-anlage-speicher-stromcloud-diskussionsthread.43899/