This is the reply their support technician sent me following my repeated inquires.
"Greetings,
Thank you for contacting Tesla. Your system is healthy and producing as expected. Currently, there are no issues or alerts showing via remote access system review. Now, let me explain peak production for solar.
The difference between the system size and the peak production is a very common question. For additional information you may search Google as some websites show testing of most modules to show the manufacturer rating versus testing to show the difference. Overall, the approximate peak level is 60-70% of your actual system size. This is something the sales agent should have explained .The peak output or the size of system is designed under Standard Operating Conditions (Laboratory conditions) and the system may never peak at that value depending on the location, orientation of panels, season, weather, temperature, shade, soiling (all of these real time conditions affect solar performance).
For example a 5.1 kW system would produce a peak level of no more than 3.5 kW. If you have any other concerns, please call Customer Support at 888-765-2489.
Please keep in mind you should receive your gateway 6/18/2021. This will allow us to receive consistent readings on your system.
Regards,"
My system is a flat roof with all panels oriented in the same direction. No significant shading issues (minor chimney shading in the morning).
Image below is my I stalled system.
View attachment 682138View attachment 682139
Similar results to others showing significant drop outs during the day, where you can see the entire string shutting down. Also posted one of my best days that seem to show the peak output of the system as only ~7.5kW. it also seems to have distinct shutdowns of an entire string which kills half of the production at a time.
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I assume this isn't working properly, but Tesla insisted this was normal.
Last but not least is the error log from the M Professional tool with multiple over current errors.
View attachment 682142
Any ideas on if this is normal operation? I would have expected much more than the peak of 7.5kW that this has averaged on the best days over the last month and a half. Is there more data I can gather to present to Tesla to have them troubleshoot?
At this rate they are on track to an annual production of ~ 14,000kWh, but my contract estimated 20,692kWh per year.
Eric