I see they are thinking (for quite some time) about monitoring / logging voltage in the breaker panel device. But where I would guess most of us really need it is in the SmartOutlet. I use quite a few in my Motorhome when traveling and knowing whats happening with the voltage when connected to shore power would be a really good thing after a fellow camper mentioned he was seeing 103 volts one day we were camping in Salida CO last summer. Please add that capability. I would imagine its pretty much just a calculation as you must already have that info to know the watts involved. -Bill