How do I know if my solar system is producing what it should be? Finn Peacock March 05, 2018 03:05 Updated Follow We explain this in detail here. Related articles Do I need to have regular maintenance on my solar system? How often and what should I use to clean my panels? What third party energy monitoring solution should I buy? Will my panels still work on overcast days? My first bill since getting solar has arrived, and I'm disappointed that the solar number is so low! Comments 0 comments Please sign in to leave a comment.