A common question asked of Enphase installers is, “Why are you installing a 260 watt solar module on a 215 watt microinverter?” But, there is no "common answer" to this question.
Though the practice of “over-sizing” solar modules relative to the inverter has existed for decades, it remains one of the trickiest topics to explain. And, even among solar professionals, conversations about over-sizing become more like religious debates than scientific discussions (trust me, I’ve been there).
The reason for all the confusion: there is no right answer. Read More