Efficiency Solar Panel Cleaning Service

I've had my solar system installed for about 6-months. I knew it was time to clean the panels and the thought of climbing up on my roof and hosing them down (which I'm also told isn't exactly a good way to clean them) wasn't in the cards. I called a few places and Jamie's price was excellent, so I thought I'd give him a try. Efficiency is a great name for his company, because he was very efficient. He was done in about an hour. Most importantly, to my surprise, my solar output increased by about 12%-13% by having the panels clean. I had NO idea it could be affected that much! They didn't look that "dirty". It rarely rains here, so I figured the "twice a year" which is recommended by the manufacturer was more than fine. They was a (what I thought) light layer of dust. Jamie uses de-ionized water which ran through his filtering system which, like the "spot free" rinse at your cash wash, leaves virtually no water residue. He didn't just hose them down, he scrubbed them with a long brush. You can actually see how shiny and clean the panels are again. I spent a lot of money on this system and it's important for me to make sure I can squeeze out as much energy as I can. For what Jamie charges to provide this great service, I'll be doing this at least 3 times a year. Nice job!