Jeroen wrote:
> You can prove a lot with assumed numbers. I don't know how often solar
> panels would have to be cleaned, but 5 times per year sounds high; once or
> twice per year sounds more reasonable to me.
Solar power is very popular here - loads of sunshine and lots of room (most
people live in suburban homes, with very few people in apartment blocks, so
there's lots of roof area). Cleaning is very rare is most areas - rain does the
job most of the time. In coastal areas, where salt buildup is a problem, we fit
a small length of PVC pipe with sprinkler nozzles to the top of the panel. At
the other end there is an attachment which connects to the garden hose and some
Windex, and streams a very weak Windex solution over the panels, followed by a
water rinse. I've never had to climb on the roof to clean the panels.
Cheers
Russell Chapman
Brisbane Australia
