I am running a PV+storage simulation but am having trouble interpreting the results. I have the following outputs:
-Monthly Load
-PV to Load
-Battery to Load
- PV to grid
- Grid to Load
- Year 1 monthly use
I would expect (monthly load)-(PV to load)-(battery to load)-(PV to grid)=(grid to load), but it doesn't. It does come close to year 1 monthly use, but not quite. There is also a major error in the calculation in September-December and I don't understand where it's coming from, as the solar generation graph appears normal as does the load without the system, so it's not a typo somewhere.
However, it does work out this way: (monthly load)-(PV to load)-(battery to load)=grid to load. I'm having trouble understand what year 1 monthly use is supposed to be representing, and also not sure where the major error is coming from. Any insights would be appreciated. Thanks!