Here’s a quick overview of several Sense measurement comparisons vs. different utilities’ metering systems for solar. In all of these, Sense has proven to be quite accurate, though not necessarily at first. A number of them started out with large errors (the ones with the word “after” in their description), but eventually yielded very positive comparisons. If you are having trouble achieving similar accuracy, some of these examples might help you sort through your differences between Sense and your utility or inverter. Issues might include an inverter reading that overestimates you in-panel power delivery (very typical) or timebase differences for your inverse vs. Sense measurements.
|Within 1% of utility after aligning measurements||Solar Production Comparison|
|Within 3% of SolarEdge inverter results||SolarEdge vs Sense App|
|Within 4% of SolarEdge /How Accurate is Sense vs. Utility Metering?||How Accurate is Sense vs. Utility Metering? - #12 by kevin1|
If you want to try checking accuracy yourself, here are some tips and techniques.