Solar & PV panel cleaning
Solar and PV systems are no different from other electrical systems in that they should be inspected and serviced regularly to ensure you maintain optimal performance and achieve anticipated financial returns.
On a sloping array the expectation is that panels are self-cleaning. However, in areas of high debris or damp we recommend a manual clean every year (or at worst every two years) to avoid algae and other biofilm growths.
A study by Google on their system in California suggested that it is worth cleaning flat roof panels at least once a year toward the end of winter; Google claim the yield on their flat roof system increased by 36%. Studies by University of California San Diego have proven annual production to diminish between 6% to 11% depending on dust and air borne pollutants. For residential customers, this may not be a problem, but for a business or utility company a 6% to 11% drop in revenue is significant.
GK PRO is a high purity biocide so cannot harm any component used in the manufacture of panels – unlike cleaners containing acids, bleaches or solvents which all have the potential to oxidise in contact with other materials. GK PRO is biodegradable and for field-based arrays it is safe for animal grazing once dry.
GK PRO has only two actions, it is a powerful surfactant so foams and attacks dirt and grime in a similar way to washing up liquid, however it’s primary function is to attack, kill and remove biological growths – that’s all it does – if used correctly the outcome is dramatic and predictable.
At Cleaning Service Exterior Cleaning, all products we use are eco-friendly and biodegradable. We test and study the science behind every product. Besides visible evidence of its efficacy we’re particularly concerned that products introduced to remove algae and mould growth, will not cause long term damage to any components like sealants, adhesives or fixings used in the render system. We recently tried GK Pro, a high purity DDAC biocide, my team found it easy and adaptable in use. On heavy soiling we brushed-in, the dense foam drew all the grime well, rinsed and a light re-spray. As a spray and leave formula on regular staining the results were excellent; I have no problem in recommending GK Pro.