What kind of maintenance does a solar system require?
Solar systems require little maintenance due primarily to having no moving parts. A tracking system of a pole mount array does contain moving parts and has the potential to require maintenance. Many battery backup systems also require maintenance to ensure battery longevity. Work with your installer to set up an operation and maintenance plan to ensure that the system is operating at optimal capacity.
Do I need to clean snow off of my solar panels?
Any shading to a solar panel will reduce electrical output. Solar panels can still produce while covered by a very light snowfall, but any more than that and the panel will not generate electricity. Solar panels have a slippery surface and are positioned on an angle. This can help snow slide off as the sun melts it. Ground mounted solar arrays can easily be brushed clean after a snowfall. If you have an off-grid system and depend on every photon, getting on the roof and dusting off your panels with a broom may be necessary (with proper safety restraints of course).
How long do solar panels last?
Most solar modules are guaranteed to last 25-30 years, and even after that, we are seeing efficiency output of 80+%. The kilowatt output degrades slightly each year yet can continue to provide consistent output. Most solar manufacturers provide a performance warranty of 25-30 years. Other PV system components, such as an inverter, could possibly need replacing during the lifetime of your array. Inverters often carry a warranty of around 10-12 years.