Today, there is no way to tell if your Power Meter or the device power meters (especially for smartplugs) are registering zero power consumption or missing data (NA - not available). Sense doesn’t differentiate in the UI, though I’m fairly certain that they know back at the mothership. Optionally exposing the NA data in a few components of the UI would give users a much better way to track network issues and other sources of data integrity problems. That might cause a few new headaches for Sense support, but also would help users diagnose lingering issues. For instance, I have found that Always On is particularly sensitive to NA data and often get’s buffeted incorrectly by 0s created by missing rather than true 0 data.