this post was submitted on 06 Oct 2025
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cross-posted from: https://feddit.org/post/19852594

Edit: Be aware that some people try to post misinformation here, such as that such plants are not safe in the case of a power failure (untrue), or that they are not economical (untrue, their advantage is that they have very low installation costs).

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[–] HaraldvonBlauzahn@feddit.org 51 points 3 days ago* (last edited 3 days ago) (3 children)

By the way: One reason why electricity from the grid is relatively expensive in Germany is that private consumers pay much higher prices than large, power-hungry companies. Effectively, consumers are subsidizing companies, which in turn can often profit from very low prices for power from solar generation, because companies can buy from exchange markets at spot prices, but private persons can't.

Balcony solar plants shift that tilted balance back a bit.

[–] einkorn@feddit.org 26 points 3 days ago (1 children)

Next by the way: Access to these special prices for companies depends on the total amount of electricity used. Which adds a reverse-incentive: Under some circustamces it is cheaper to waste electricity in order to keep access to cheaper prices than to use less electricity. Because if you use less then you have to pay normal prices.

[–] Cliff@feddit.org 10 points 2 days ago (1 children)
[–] Elchi@feddit.org 3 points 2 days ago

Ist es möglich dies Fähigkeiten zu erlernen?

[–] Don_alForno@feddit.org 5 points 2 days ago

And after all this, they still piss and moan about "prohibitively high energy prices".

[–] pantherina@feddit.org 5 points 2 days ago

Good old Umverteilung, love it

[–] festkoerper@feddit.org 8 points 2 days ago (2 children)

Next best thing: German electric engineers to the rescue. Without regulations.

[–] HaraldvonBlauzahn@feddit.org 3 points 2 days ago (1 children)

Regulations were very careful in the beginning, but now it is that basically anyone can plug in a system like this and register it.

To note, there were some technical challenges, of course the plug needs to be safe when it is not plugged in, and the system switches off when the power fails, which is also for safety - these are not autonomous or "island" systems though of course, solar can be used for that.

[–] B0rax@feddit.org 1 points 2 days ago

There are currently talks about tightening these regulations, to the point where it is no longer feasible to use these kind of systems :(

[–] MrFloppy@feddit.org 4 points 2 days ago* (last edited 1 day ago) (1 children)

Black Panther MEME with VDE/ISO "We don't do that here"

With the next Revision of the ISO/VDE it can only get worse for this theme, because of overregulation.

[–] festkoerper@feddit.org 2 points 3 hours ago* (last edited 3 hours ago)

Except for my lab. In whichever, I do whatever I want to do.

Which seemingly is a collective fortitude.

[–] Valmond@lemmy.world 4 points 3 days ago (1 children)

So how good is it? I'm pondering a 400W panel but I have 2 balconies, one for the morning sun, one from around 11h...

[–] rainwall@piefed.social 6 points 2 days ago* (last edited 2 days ago) (3 children)

These systems tend toward 800 watts for about $600. Pay off is generally 4-6 years. With solar panels lasting for 30+ yrs, you gain a degree of power independence and a rough income of $100-200/yr.

1200w setups are legal in Utah, so you may be able to get one of their systems in the states. Ecoflow has one called the ecoflow stream..

Since the limit is 1200w in utah, what some people are doing is deploying 1200w into the active circuit, with another 1200w going fully into a battery. Since only one 1200w system is in use at a time, this is apparently allowed under the law.

[–] Melchior@feddit.org 6 points 2 days ago

In Germany you can get an 800W system, so two solar panels, a converter and cables for 250€. You usually need some sort of attachment as well, which is another 50€ or so. They are surprisingly cheap.

[–] Valmond@lemmy.world 3 points 2 days ago (1 children)

I know Germany have relaxed their laws but I'm in France, guess I have to wait until the "revolution" comes here.

[–] MrPozor@discuss.tchncs.de 4 points 2 days ago (1 children)

Yes, in France the laws about these panels have actually become stricter last month. Big disappointment.

[–] HaraldvonBlauzahn@feddit.org 2 points 2 days ago

On top of that, you can now get used ones for about half the new prices.