this post was submitted on 11 Feb 2025
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[–] [email protected] 75 points 1 day ago (9 children)

The "balcony" bit isn't the defining characteristic, it shouldn't be taken literally. Some people do have their "balcony solar power" on their roofs.

What defines it is limitation to 800 W and inverters that come with a normal Euro Type F ("Schuko") plug and no legal requirement for professional installation. A layman can literally plug it in to an existing wall socket. Given that they are capped at 800 Watts, the inverters are also the simplest type and dirt cheap (although often they are literally just software-capped and identical to higher power ones, make of that what you will). Complete systems (2 panels, cabling, inverter) cost between 299€ and 800€ depending on quality. You genuinely only have to buy a fixture that suits your needs and a mate to help you install it.

Proper several-Kilowatt-systems are very expensive in Germany too.

[–] Buffalox 30 points 1 day ago* (last edited 1 day ago) (8 children)

Thanks really good info. 👍😀

A layman can literally plug it in to an existing wall socket

That's amazing, I had no idea that is possible??? Is that special for Germany? (sorry for keeping on with new questions). 😋 I've never heard of that option here in Denmark.

cost between 299€ and 800€

No wonder it's a popular option, our system is of course bigger with 11.2 kWh and 7.5 kWh battery. but it was $17000 1½ year ago. Prices have dropped to $12500 for a similar system, but still such an 800W system is dirt cheap by comparison.

[–] [email protected] 13 points 1 day ago (4 children)

There are already a few requirements for operating the balcony panels, At least here in Germany:

  • You need a suitable electricity meter
  • You have to register with a relevant authority and inform the electricity provider that you are operating a “balcony power plant”.
  • The microconverter should run on its own secured circuit. (“Should”, will certainly do very few) But technically it is simple:
  1. Set up panels
  2. Connecting necessary plugs
  3. Microconverter to the socket
  4. Be happy that you produce up to 800 watts of your own electricity

I think it's almost irrelevant how many panels you ultimately split up. However, no more than 800 watts may be fed in.But if you have panels with, let's say, 2000 watts, you can of course charge various batteries with them beforehand. Nobody can say anything against it.

[–] Buffalox 2 points 1 day ago

You need a suitable electricity meter

That makes sense, we also needed new meter, and that was about €200.- with installation. Not a big deal for a big installation, but for a system that can cost only €300.- an extra 200.- would be pretty significant.

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