One tricky aspect of off-grid operation you are missing is that you have to support, at least for the US market, loads that are unbalanced across phases. Even the SolarEdge off-grid solution, which is mostly implemented in software, requires new hardware for this.
I suspect all of the major GTI manufacturers will launch off-grid products in the near future. Fronius, SolarEdge and Enphase have already made announcements and I would be astonished if SMA is not working on something. It will be interesting to see if they can add off-grid capability without adding too much to unit cost.
I suspect all of the major GTI manufacturers will launch off-grid products in the near future. Fronius, SolarEdge and Enphase have already made announcements and I would be astonished if SMA is not working on something. It will be interesting to see if they can add off-grid capability without adding too much to unit cost.
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