Accurate Within 0.2%
Revenue-grade refers to the accuracy of a meter. Meters are considered revenue-grade if they meet ANSI C-12.2 compliance, which is defined as accurate within 0.2%.
Find your Meter Spec Sheet
To determine if your meter (or inverter) is revenue-grade, find the device's specifications sheet online. Look for the term "revenue-grade" or ANSI C-12.2.
Spec sheets can be found by Googling the meter manufacturer and model.