I have a Tesla (nee SolarCIty) system that was installed and activated in 2013, before my Sense. My 4.2kW system has a single SolarEdge inverter, that outputs energy production to the web and for download. After some analysis back in Aug, 18, I saw a few interesting things in comparison to Sense production data.
- My SolarEdge/Solarcity results were systemically 3% optimistic compared to Sense results
- Using the Sense solar data gave closer correlation to my revenue power meter, than the Solarcity data.
- There are differences between the time interval accounting between Sense and Solarcity, so a scatter plot on an hourly basis gave sort of an ellipse, rather than a straight line. Easier to compare on a daily basis.
- Both Sense and Solarcity data are affected by dropouts due to network outages and other issues, so a number of “bad” data points.