Should you wash your solar panels?

James Stanley Home Projects Puzzles Notes About Should you wash your solar panels? Tue 21 July 2026 Tagged: science I have a small solar farm and the panels have got visibly dusty. Is cleaning them worthwhile? How much difference does it make? Let's find out. I know that my panels have not been cleaned in the last year. I expect they also weren't cleaned in the year prior to that (why would you clean them when you're about to sell the house?). But beyond that I don't know when they were last cle