this post was submitted on 20 May 2025
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The biggest advantage of balcony-mounted solar panels, at least where I live, is that you need 0 permits. You don't need to ask your neighbors, you don't need to ask your power company, you don't need a building permit, you don't need an electrician and you don't need a solar company to install them for you.
They don't replace large solar farms but if you incentivize people to DIY their solar installation you get tons of additional cheap and clean energy from a source that would be wasted otherwise.
What are you powering with it? How are you storing the energy? It just doesn't make any economic sense to me. I'd love to see some statistics on the total cost of one of these systems and how much power people are actually getting. Maybe it makes more sense in Germany where energy prices are nearly double the US average. But I'd still love to see some real examples to back that up.
You plug it straight into the wall, it syncs to the grid and back-feeds it, up to 800W. Your meter stops spinning (or even goes backwards)
Back feeding is illegal in the US.