I keep waffling between choosing an AC coupled vs a DC coupled system. I'd like to use the schnieder XW inverter for it's generator support, but I also like what I hear about SMA, but I'm not sure they can sync with a generator like the XW can. I also understand that an AC coupled system is not self starting if your batteries go south, but I like the cost savings in wire with an AC coupled system and AC is just better understood by electricians etc, also with microinverters, expansion is easy.
Aside from the issue of not being self starting (which could be addressed with proper use of the genset to make sure your batteries never get exhausted), what are the pro's and con's of each system? The two manufacturers I like are Schneider and SMA, I have the design tools for both, and it seems for some reason the SMA wants me to be using 2 Sunny Islands, which really bumps up the cost of that system vs the Schneider. So could anyone comment on either manufacturer in terms of their reliability/warranty/service etc...
Aside from the issue of not being self starting (which could be addressed with proper use of the genset to make sure your batteries never get exhausted), what are the pro's and con's of each system? The two manufacturers I like are Schneider and SMA, I have the design tools for both, and it seems for some reason the SMA wants me to be using 2 Sunny Islands, which really bumps up the cost of that system vs the Schneider. So could anyone comment on either manufacturer in terms of their reliability/warranty/service etc...
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