> This system consists of two 50W solar panels on the balcony, a 100 Ah lead-acid battery and a 10A charge controller. The energy generated is used for lighting, the music system, and charging laptops and other electronic devices, among other things. The initial financial investment was 340 euros: 120 euros for the solar panels, 170 euros for the battery and 50 euros for the charge controller.
There’s the problem - the expensive lead acid battery, which is not the best technology to fit the application.
I get the overall point about load shifting to suit solar output, but the point about storage being prohibitively expensive falls flat because they didn’t use the right battery.