[Evans, Marv]

I would suspect it might be an issue with the reporting equipment. I had an ongoing problem with mine seemingly going offline periodically and indicating no generation. The company sent techs out, but they couldn't identify a problem, and the system was actually produciing full power into the grid. I just couldn't see it on my end. In the end it was me who corrected it by figuring out it was one of the monitoring modules between the panel and my conputer. I got the numbers off the modules, replaced the one inside the house, and the problem was solved. If your system is still under warrantee (or not), whoever looks at it can tell you if it's generating 100% and not reporting it or if there is some kind of discontinuity in the wiring at the panels.