Anyone else getting inundated with SunBandit Hybrid Solar Water Heating System marketing emails? Any first impressions? Here are my initial thoughts:
Pros - provides hot water in utility outages, no interconnection hassles, possibly easier permitting hurdles, eliminates moving parts in active SDHW systems Cons - no grid-tie, any excess energy produced is wasted, AHJs won't know how to categorize equipment for permitting and may charge for solar water heating and PV permits and inspections I haven't dug too deep, but one strange thing I think I saw on a spec sheet was that the "micro-AC Grid" (aka microinverter) is UL 1703. If that is the case, how does the PV continue to provide water heating in a utility outage? What I really don't understand is why there is a need for a microinverter at all? Why not just use a DC element? I guess a microinverter, despite minor efficiency losses, is cheaper than a load controller. Jason Szumlanski Fafco Solar
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