Ray, I think your biggest issue may be SolarEdge. They told us the StorEdge unit would not start up without grid power. We had an employee install one anyway on his tiny home. He hooked it up to the grid initially to get it started (in back of shop where house was built). He is not sure how sincere Solaredge's requirement is as he has turned off for periods since then and it still starts up. We wish we had tried without the grid initially. Let us know if that works should you go that route.
Overall he enjoys the unit though he mentions his battery has shutdown a couple times when it has gotten below 15F (battery is on exterior as it is tiny home). Probably not applicable for your installs. Matt On Mon, February 19, 2018 2:14 pm, Ray wrote: > 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 > > > _______________________________________________ > List sponsored by Redwood Alliance > > > List Address: REemail@example.com > > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > List-Archive: > http://firstname.lastname@example.org/maillist.ht > ml > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > Matthew Partymiller Solar Energy Solutions LLC (877) 312-7456 m...@solar-energy-solutions.com _______________________________________________ List sponsored by Redwood Alliance List Address: REemail@example.com Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://firstname.lastname@example.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org