Energy storage

I have learned about a relatively interesting concept where the electricity produced by the photovoltaic system is stored in a cloud. In winter, when the photovoltaic system produces nothing, "electricity" can then be withdrawn from this cloud. Similar to a bank account. Of course, the whole thing costs a basic fee, but according to the homepage, it does not seem to incur any additional costs. At least I have not found anything negative yet. Has anyone had experience with such concepts? I have informed myself via the website of Senec.

Maybe not deleted after all... The idea is great, as a customer you get the feeling of consuming your own electricity completely - which is of course factually nonsense, because there are no physical storage facilities for the self-fed electricity. In winter, you get electricity from a preferred (hopefully named sustainable) source by the provider - and that is also not really correct... It is purely a commercial construct that uses the "phenomenon" of balancing groups in the power grid. Great thing if the offer is cheap and fair. Some of these offers are surprisingly expensive.

yes, that is clear. For the small amount of electricity I need over the summer compared to the electricity for heating with a heat pump, photovoltaic is too uneconomical for me. That’s why I am looking for a solution to roughly cover the electricity demand with photovoltaic even in winter.

Buy affordable sustainable independent of [Photovoltaik]. That is the easiest and probably also the most lucrative. A small private wind turbine is also cool, but not yet economical.

I looked into the SENEC website.

What a complex construct! - SENEC storage necessary - Waiver of the complete feed-in tariff during the contract period with billing at the end (however exactly calculated) - Costs from €15 monthly - Excess consumption billed at 27 cents - incomprehensible procedure

This is discussed in detail here. In advance: The winner is not you.