I’ll conclude with one more view on NV Energy’s data. Your Sense correlates incredibly well with your NV Energy “Actual” reads… But not so well with “Mixed” hourly reads (some “Actual” and some “Calculated”), and very poorly with most entirely “Calculated” hourly reads.
The histogram below highlights the error/differences distribution between the different read types.
I believe that Sense is giving you consistently a much better answer than your NV Energy download.