A solar installation can offer a typical investment payback of between 5 & 12 years. The payback period depends on site electricity consumption and the retail price of electricity both now and anticipated in the future. If you provide us with a good estimate of your electricty useage and costs then we can overlay this with the expected output of the solar PV system to determine how much of the solar energy you are likely to use. It is the combinationof energy consumption profile and solar PV output that determines how useful a solar energy system will be to you.
PV systems require very little maintenance besides regular monitoring and replacement of inverters (5-10 years). In general, PV panels are self-cleaning unless your building is in an area that suffers from high dust levels, leaf fall etc.