Here’s a quick overview of many Sense measurement comparisons vs. different utilities’ metering systems. 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 seeing similar accuracy, some of these examples might help you sort through your differences between Sense and your utility. Issues might include a second panel that Sense isn’t measuring, measurement interval differences between Sense and your utility, or your utility giving inaccurate readings (really !).
|Within 1% of utility after discovering mystery second panel||Usage Accuracy|
|Within 1% of utility, even after Sense issues, far better more recently||How to Tell When Your Sense is Lying to You - #6 by kevin1|
|Variance of 3% or less vs utility||Total kwh accuracy? - #9 by peter|
|Within 1% of utility after the Sense and utility time periods were aligned||Solar Production Comparison|
|Better than within 1% of utility||How Accurate is Sense vs. Utility Metering? - #6 by Dcdyer|
|Better than within 1% of utility, but only after comparing against utility Actual Reads vs Estimated||Correlating NVEnergy Usage Data with Sense Data|
|Better than within 1% of utility||Sense accuracy compared to meter - #4 by samwooly1|
|Within 3%, in just a spot check against the meter||How Accurate is Sense vs. Utility Metering? - #17 by jkish|
If you want to try checking accuracy yourself, here are some tips and techniques.
ps: Let me know if I have missed any interesting measurement comparison stories. Thinking we might need a separate table for solar output comparisons.