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Germany just now approved new laws that make setting up solar on your balcony super easy (www.tagesschau.de)

submitted 7 months ago by [email protected] to c/[email protected]

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Just 10 years ago, landlords could ban you from putting solar cells on your balcony because it makes their building look "messy". Now Germany is really pushing forward to let everybody put solar modules on their balcony with these new laws. How is legalization of balcony solar cells in your country? Is setting up solar modules on your balcony easy or difficult law-wise?

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[–] [email protected] 6 points 7 months ago (1 children)

Does this make sense if the surface area will be so neglegible anyway? I feel like the ~6m² you can fit onto the side of a balcony is nothing compared to a whole field/flat roof covered with them...

[–] [email protected] 7 points 7 months ago (2 children)

Well let's do some back of the envelope math.

Conservative estimate: 6m^2 about 6000w of sunlight x 20% panel efficiency x 4hrs/day = 4800wh or 9.5 hrs at max 500w inverter output.

Liberal estimate: 6m^2 about 7200w of sunlight x 25% panel efficiency x 5hrs/day = 9000wh or 18 hrs at max 500w inverter output.

I think this would be worth it for an apartment dweller who doesn't have access to the roof or a whole field. And producing the power when and where it's used reduces transmission costs.

[–] [email protected] 4 points 7 months ago

6 to 9kWh is a generous amount to run a small home on