Sounds like the mains are where they were in the previous picture, so don’t worry about another one
I do really think tech support needs to be involved, because the way I see it this is a computational error that may or may not be built into the software.
For example, the way mine is set up, I have the mains coming in through the main breaker, the main door feeding the panel, where it goes to my household appliances. In addition, I have my solar coming in separately through a second breaker, a side door, feeding the panel and going to my household appliances and, when in excess, back through the mains to the grid. Essentially I have two doors to get into the room that is my panel, and Sense is monitoring both doors to see who’s coming in and going out.
Yours, on the other hand, is like a church with a big atrium. Mains coming in, but solar coming in right there at the same spot through two doors on either side of the main door. where Sense is trying to monitor who’s coming in and going out at the same time. Assuming there was a small delay in when you took the pair of screenshots, here’s my math: take the solar, subtract both the mains to get 729 - which is how much your house is consuming at that very moment. Makes sense because solar is producing and mains are reversed letting the excess out. Now, take the solar again and subtract ~729 to get ~3406 (admittedly we’re off by about 120 which could be either a fluctuation in production or usage or both between 1138-39). There’s something in the way sense naturally accounts for what it puts on that main histogram page that wants to subtract your usage from your solar.
The math makes my head hurt, but I have to wonder if this may be due to how your solar is connected to the panel. I wonder if tech support will need to rewrite the calculations for your device to accommodate. Where that happens is what I’m not sure about - in the software itself or in the app I would try recalibration when the sun is out (all it really needs is >150w based on past experience), and see whether that fixes it… Or wait for more advice and input from tech support.
edit based on a competitor’s website, your setup is known as supply side solar, and at least on that platform, requires a different mechanism of calibration compared to the setup I have (load side solar): http://support.neur.io/customer/en/portal/articles/2171169-sensor-configurations-for-supply-side-solar-tie-in-setups (sorry Sense if that’s inappropriate to link). I am not sure whether Sense handles figuring this out on its own, or whether the Sense platform needs to investigate a similar approach.