@brettabailey,
I finally went back and made a minor mod to the script of yours that I had been tweaking. I added the adjustment that moves the incoming NREL PVWatts predicted solar generation data during DST from standard time to DST. Just a couple lines, but it is custom for 2019 DST. There’s probably a way to use some set of R as.Posix and/or shftime() to do things more cleanly, but i didn’t want to have to dig through to find it.
With that DST adjustment, my 6 year data vs. the NREL simulation comes out much closer to linear, as should happen.
sense_process_edits6.R (4.1 KB)