I read your article on AC Coupling. I have a customer with an 1800 watt grid tied system. He has a Fronius IG 2000 inverter. He wants to also have a battery back up. We were going to price him out a battery back up system which would have to replace his inverter. Can you add battery back up without changing the inverter? How would this work?
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12 years 2 months ago
Comments
MG,
As you saw in the article AC Coupling, there are three options besides the SMA Sunny Island / Sunny Boy combination: Outback, Xantrex and Magnum Energy.
Of these three, the Magnum MS-PAE inverter is the best choice for overall simplicity and support - the 2000W Fronius meets the requirement of being 90% or less in rated output than the 4400W capacity of the Magnum PAE.
I'll try to do that.