+1 to this software request. I also have a solar install where the solar tap is upstream of the main panel (right in the utility meter) where I am unable to move the consumption CTs, so solar production screws with the app math since this use case is not an available option for configuring of the solar setup.
This kind of solar setup seems rather common to tie in directly at the main meter when the main panel is not rated for the size of the solar install. Please add this functionality as it is long overdue and other meters like Sense can handle the setup perfectly.