

8·
7 days agoRain keeps solar panels clean. Output degrades over time naturally regarldess.
I lived off grid with a 2kW system for a decade,. As a test we cleaned themmonce at about the 5 yr mark with soap, water and a broom. My measuring equipment wasn’t sensitive enough to notice any difference.
That said, this is a desert (not much rain) I have seen small solar powered robotic cleaners (like robotic window cleaners) used on vast solar arrays along a rail, an array that vast and an increase is worth it
Which is an odd take as when I statted using “smart phones” not a singke.one supported apps from banks or government,.yet here we arw.