<div dir="ltr">I live in a Caribbean Island and use off-grid solar with grid as backup when available. We just went through Irma and lost power for three months. I've lived these solutions.<div>I wouldn't use anything other than an Outback Radian for this with a DC charge controller, but finding a good Lithium solution will take a little work. We have 1100 Ah of Lead acid, but only use 20% of that. So 300Ah of useable storage would have been adequate for Lithium and that's what we will use later.</div><div>Relion looks promising.</div><div>Right now there is no good integrated Lithium solution.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 19, 2018 at 4:26 PM, Matt Partymiller <span dir="ltr"><<a href="mailto:matt@solar-energy-solutions.com" target="_blank">matt@solar-energy-solutions.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Ray,<br>
<br>
I think your biggest issue may be SolarEdge. They told us the StorEdge<br>
unit would not start up without grid power. We had an employee install<br>
one anyway on his tiny home. He hooked it up to the grid initially to get<br>
it started (in back of shop where house was built). He is not sure how<br>
sincere Solaredge's requirement is as he has turned off for periods since<br>
then and it still starts up. We wish we had tried without the grid<br>
initially. Let us know if that works should you go that route.<br>
<br>
Overall he enjoys the unit though he mentions his battery has shutdown a<br>
couple times when it has gotten below 15F (battery is on exterior as it is<br>
tiny home). Probably not applicable for your installs.<br>
<br>
Matt<br>
<div><div class="h5"><br>
<br>
On Mon, February 19, 2018 2:14 pm, Ray wrote:<br>
> Greetings Wrenches;<br>
><br>
><br>
> We are designing several systems for Puerto Rico, and while these will<br>
> eventually could be grid tied once the grid returns, they will need to<br>
> operate reliably in off grid mode possibly for a year or more. What is<br>
> everyone's experiences with the Storedge and LG setup? I've worked with<br>
> the regular Solaredge GT system and was quite impressed, but I've heard<br>
> the Storedge is not a good off grid option. What are the issues, and has<br>
> anyone used the Storedge in longer term outages?<br>
><br>
> Right now we are designing some smaller systems that will use Magnum<br>
> inverters with 24v and 48 v Li+ batteries from other manufacturers, like<br>
> Simpliphi and LiFe Blue. ( No GT, Backup only) These are lower cost and<br>
> allow us to use more traditional off grid designs, but also have limited<br>
> charge and discharge current. In order to make Li+ cost effective, we<br>
> have had to reduce the storage size in half compared to lead acid. We<br>
> feel this is justifiable considering Li+'s ability to be discharged to<br>
> 100%, its voltage stability, and its higher efficiency.<br>
><br>
><br>
> All feed back is welcome, as we venture into less well charted<br>
> territory. We just don't want to set up systems that are going to not be<br>
> functional in 5 to 8 years because of inferior AGM lead acid batteries. <br>
> We use HUP batteries for most larger off grid systems, but<br>
> these are not feasible because of their size and maintenance requirements.<br>
><br>
><br>
> Thanks,<br>
><br>
><br>
> Ray Walters<br>
><br>
><br>
> Remote Solar<br>
><br>
><br>
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</div></div>Matthew Partymiller<br>
Solar Energy Solutions LLC<br>
<a href="tel:%28877%29%20312-7456" value="+18773127456">(877) 312-7456</a><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Chris Mason<div><div style="color:rgb(136,136,136)"><span style="font-size:13px">NABCEP Certified Solar PV Installer\u2122</span></div><div style="color:rgb(136,136,136)"><span style="color:rgb(34,34,34)">Solar Design Engineer</span></div><div style="color:rgb(136,136,136)"><span style="font-size:13px">Generac Generators Industrial technician</span></div></div><div style="color:rgb(136,136,136)"><span style="font-size:13px"><br></span></div><div><a href="http://www.cometenergysystems.com" target="_blank">www.cometsolar.com</a></div><div>264.235.5670</div><div>869.662.5670</div><div>Skype: netconcepts</div></div></div>
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