I am trying to figure out why it is a good idea we use the IQ8 in anything other than a solar only backup scenario. If there are Enphase batteries involved, wouldn't the IQ7 do the same job on the roof? In a straight grid tied scenario, again the IQ7 would do the exact same thing. You would not have an upgrade path to solar only backup, of course.
I'm just having a hard time understanding the value proposition of the IQ8 in most of the situations I encounter. They cost significantly more, and you need an additional rapid shutdown switch when using batteries that can be quite a pain in some scenarios. Am I missing something about the switching speed, energy harvest capability, or the way they interact with batteries that makes them better? P.S. I am aware of the very small power output differences by model number and I am referring exclusively to 240 volt applications. I understand the 208 volt advantages of the IQ8. Jason Szumlanski Florida Solar Design Group
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