What are the average yearly maintance costs of a typical system?
Solar doesn’t have any moving parts and requires very low maintenance. You don’t lose much by letting the rain do most of the work, but you definitely have to remove debris like leaves or heavy dust. If you are interested in maintenance, SunRun provides a total solar program in which they take care of all of that. In other words, maintenance costs are mostly nil, although your inverter will likely require replacement during the lifetime of the system (probably averaging around 15 years from now). They will likely be much cheaper at that point than they are today, but if you want to be conservative, assume 5% of total cost of system maintenance costs over the system’s lifetime.
