Way back when, I was comparing my SolarEdge, with my meter, with Sense. At the time, the SolarEdge inverter was reporting 3% higher than my meter, which was reporting 3% higher than Sense. That’s how we first identified the “Daytime Dip,” which was eventually tracked down to a faulty calibration process and a fix was sent out to all units.
Since then, my solar has been more or less spot on with my meter, while my SolarEdge is…still 3% higher than my meter. Gee, why would an inverter company want you to believe you were making more energy than you actually were? Alternatively, why would a utility want you to believe you were making less energy than you actually were?