[RE-wrenches] Li+ Systems Puerto Rico

[Ray]

Greetings Wrenches;

We are designing several systems for Puerto Rico, and while these will 
eventually could be grid tied once the grid returns, they will need to 
operate reliably in off grid mode possibly for a year or more.  What is 
everyone's experiences with the Storedge and LG setup?  I've worked with 
the regular Solaredge GT system and was quite impressed, but I've heard 
the Storedge is not a good off grid option.  What are the issues, and 
has anyone used the Storedge in longer term outages?

Right now we are designing some smaller systems that will use Magnum 
inverters with 24v and 48 v Li+ batteries from other manufacturers, like 
Simpliphi and LiFe Blue. ( No GT, Backup only)  These are lower cost and 
allow us to use more traditional off grid designs, but also have limited 
charge and discharge current.  In order to make Li+ cost effective, we 
have had to reduce the storage size in half compared to lead acid.  We 
feel this is justifiable considering Li+'s ability to be discharged to 
100%, its voltage stability, and its higher efficiency.

All feed back is welcome, as we venture into less well charted 
territory.  We just don't want to set up systems that are going to not 
be functional in 5 to 8 years because of inferior AGM lead acid 
batteries.  We use HUP batteries for most larger off grid systems, but 
these are not feasible because of their size and maintenance requirements.

Thanks,

Ray Walters

Remote Solar