TLDR: I am only seeing a peak output of around 8.5kW for my 11.34kW system. Tesla says it is normal. Is it? Been keeping an eye on my system just through the Tesla app and the minimal data available on MySolarCity. (I don’t know that I am savvy enough to hook up any of the more sophisticated monitoring options like PV Output.). I posted this in another thread, but thought I should start my own vs continuing to hijack an unrelated thread. I have two arrays on my home, one facing South with 12 315W Panasonic panels and one facing East with 24 315W Panasonic panels. The southern array is connected to a 3.8kW Delta inverter and the eastern array is connected to a 6.6kW Delta inverter. My home has zero shade issues, and most days are full sun with no clouds. The highest peak production I have ever seen out of the eastern array is 5.8kW and it normally maxes out just over 5kW. My southern array normally peaks at 3.5kW which seems pretty good compared to its rated numbers. I have never once seen inverter clipping on my production graphs, even though I probably should by the straight numbers and it being summer. I called Tesla Energy and they show no errors and that my current production is at 91% of predicted for the ~ 2 months the system has been turned on. They said they don’t worry about a system until it gets closer to 60-70% of predicted production (!) and that my system is perfectly fine. They told me not to worry about the peak kW numbers and that they don’t really mean anything. I asked why I had never seen clipping on my inverter, but got nowhere with that line of questioning. I also got nowhere asking why the two arrays performed so much differently. I did run PVWatts for the eastern array. I assumed premium panels and entered the correct pitch and azimuth but left the losses estimates as the default. It estimates June production should be 1387kWh AC, my actual was 1191kWh. Is this within the normal variation of solar installs? My panels are dusty (it hasn’t rained in months) - I rinsed them off with a hose a month ago, but wasn’t able to do a real good job on the large array. Here is the current dirt level on the larger array. Think the bird droppings might be the issue? I would have to hire a service to get up there to really clean them. It hasn’t rained here in months. Here are some screen caps of the Tesla app for yesterday vs Solar City’s tool And here is a shot from my best production day so far on a cool day in June: Thoughts? Do I actually have a potential problem, or am I just worrying over nothing?