[RE-wrenches] Off-grid Sunny Island to backup

[Mac Lewis]

Hello Wrenches,,

We have been asked to take an SMA Sunny Island System that is off-grid, and
convert it to a backup system (Quad stack).  Currently, this is a DC
coupled system using Midnite charge controllers.  We would like to add SMA
grid-tied inverters to backfeed excess power.  I have located this document:
https://files.sma.de/dl/7910/SB-OffGrid-TI-US-en-19.pdf

According to this document, there really isn't Sunny Boy inverters
available that can function as a backup for a system like this.  Is this
true?
Do you know of any distributors that may have stock of the  SB XXXXTLUS-12
line of inverters that would work for this.

Thanks for your assistance

-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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