I’m far from an expert, but I have two parks with submetered electric. I use a very low tech system of having the manager read the meters every month and typing the readings into an excel spreadsheet, and it works quite well.
I feel like the logistics of submetering electricity is much easier than submetering water/sewer, and an expensive high tech system for electricity might not be worth it while it likely is for submetering water. Electricity:
-Doesn’t spring expensive leaks
-Doesn’t have meters that semi regularly break like water meters do
-Has a meter that isn’t buried underneath the home and wrapped in heavy insulation