I needed to have my 11 Solar Panels cleaned and this company's quote came in at the best. They had a special on at the time (July 2014) of $5 per panel (but I've just checked their website and prices have changed) but it only cost me $55 where as the 2 other quotes were $121 (with a 10% discount for pensioners) and $90. They did a good job and completed a visual inspection for any defects or problems and provided a written report (which can come in handy re the warranty on your system). They also made handy suggestions, like spraying the wall around the inverter with surface spray to deter spiders nesting, and recorded it in the "Notes" section. They also have a mobile number 0427 770 768.

Approximate cost: $55