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No still don't understand, I must be thick
This picture off their website looks like theyve just wet the block pavers to make them look dirtier than the cleaner lot.Off herehttp://www.fastwindowcleaning.co.uk/patio-and-driveway-cleaning-london-your-window-cleaners-london/
On his website it says "Its highly recommended that you wash your solar panels ones every 3 months keeping the energy production level at always highest they can be all year around" Obviously very bad English, but is it really cost effective to have them cleaned this often? If it costs say say £20 or £30 to clean them each time that adds up to £120 per year, I've heard that solar panels only save you up to about £120 per year on your bills so the cost of cleaning them cancels out the gain in electricity? What say you?
Quote from: chez on May 11, 2013, 11:11:48 amOn his website it says "Its highly recommended that you wash your solar panels ones every 3 months keeping the energy production level at always highest they can be all year around" Obviously very bad English, but is it really cost effective to have them cleaned this often? If it costs say say £20 or £30 to clean them each time that adds up to £120 per year, I've heard that solar panels only save you up to about £120 per year on your bills so the cost of cleaning them cancels out the gain in electricity? What say you?A solar installation on the next farm to me cost £250,000 and at peak operation, May to July, earns about £2,000 per week. Food for thought.