Photovoltaics at any cost - current situation and offers

Once again summarized:
Calculate the maximum withdrawal power by considering the cycles per year divided by the expected lifetime and then divide that by the costs.

The cycles per year depend on the (time-related) course of electricity consumption, storage, and solar system.

Efficiency of the house etc. only plays a role within the scope of electricity consumption.

Very well summarized.

And even here you have to say that this is only a very rough estimate in favor of the storage.

Losses are not taken into account (for these, the lost feed-in tariff would have to be credited), and there are figures of up to around 20%. Depending on the individual design, taxes also play a role in the calculation, as well as a few other small details.

Sometimes the mistake starts early, because many say what the storage cost was and take the figure on the invoice for the storage, but forget that without storage you would usually have gotten a significantly cheaper inverter.

But I repeat once again: there are not only economic reasons. For many insurances, for example, people are also willing to spend money with the "desired" risk of not getting it back.

Sometimes the mistake starts early, because many talk about what the storage cost and take the number that was on the invoice for the storage, but forget that without storage you would usually have gotten a significantly cheaper inverter.

And there are also cases where you have to offset the cost of the inverter, because due to the storage you don't need an additional inverter at all. For us, for example, the inverter is integrated into the storage ;)

Where I just fell off my chair are the opportunity costs (is that what you call it in this case?)

If I invest 5k annually at a fixed 2%, I get 100€ interest per year. With my example from earlier, that would be about 8 cents/kWh again with 200 cycles and 6kWh! The more you think about it, the more unfortunate it really becomes...

PS: By the way, my battery was installed yesterday ;):oops::p

And there are also cases where you have to offset the costs of the inverter because you don't need an additional inverter due to the storage system. For example, in our case, the inverter is integrated into the storage ;)

Well then I hope for you that if one of the two breaks down (storage or inverter), you don’t necessarily have to replace the entire thing or that the manufacturer still exists. :p

You always throw in random bits here. Someone interested in storage won’t get anything out of that. So go ahead and tell us. When did you buy it, how big is the storage, how much did it cost you, and how many cycles do you get per year? Or rather, how much do you charge and how much do you get out?

This morning between 2 and 4 o'clock, the kWh was 27 cents from the grid. This afternoon, the kWh costs ~50 cents. I will also charge the storage with "Landstrom" if it makes sense - otherwise it is dead capital in winter.

This morning between 2 and 4 a.m. the kWh from the grid cost 27 cents. This afternoon the kWh costs ~50 cents. I will also charge the storage at my place with "land power" if it makes sense – in winter it is otherwise dead capital

No Think about the lifespan of the battery... every kWh that goes in and out of the battery also costs you money! Here, with the huge difference, it may still be worthwhile, but you should calculate that individually...