Balcony solar panels can save 30% on a typical household’s electricity bill and, with vertical surface area in cities larger than roof space, the appeal is clear
Most people don’t care about being CO2 neutral. The real question is what is the ROI? Will the panel save that person money. If it takes 50 years to pay for itself, I’d say that’s bad. 10 years is more standard. 5 years I say it’s a no brainer. Though I suppose you can also argue value for utility, if that is giving her the ability to power something off grid that would be worth something.
In Germany those panels usually pay themselves after about 5 years depending on the price of the necessary electronics (don’t forget the electricity meter!) and if there’s also a battery.
Most people don’t care about being CO2 neutral. The real question is what is the ROI? Will the panel save that person money. If it takes 50 years to pay for itself, I’d say that’s bad. 10 years is more standard. 5 years I say it’s a no brainer. Though I suppose you can also argue value for utility, if that is giving her the ability to power something off grid that would be worth something.
In Germany those panels usually pay themselves after about 5 years depending on the price of the necessary electronics (don’t forget the electricity meter!) and if there’s also a battery.