The SMA Sunny Storage looks promising. <div><br></div><div>It will be able to work with the LGC RESU10 HV battery and, sooner rather than later I hope, BYD package as well. </div><div><br></div><div>And it will allow for a backup generator tie in. </div><div><br></div><div>Ta-dah!</div><div><br></div><div>marco <br><br>On Thursday, September 13, 2018, Bruce Erickson <<a href="mailto:bruce@mendocinosolar.com">bruce@mendocinosolar.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi Marco,<div><br></div><div>I partially agree with you. I recently bid Outback, StorEdge, and Pika options for a GTBB customer, partly to understand pricing for myself, and found OB to be so much more expensive. The customer really wanted a system that would be to be able to charge the batteries off a generator in an outage, understandably. But the extra thousands in cost for OB ended up being prohibitive. Add-on rapid shutdown is a killer. So he\u2019s opting for a nice modern high voltage DC system, with optimizers and built-in RSD, but when there\u2019s an extended outage, he\u2019ll have to hope the sun comes out right after the storm to recharge the batteries, or he\u2019ll end up in the dark again, until the grid comes back. Maybe there\u2019s a high voltage inverter that allows generator charging, or a third-party battery charger, that I\u2019m not aware of. Otherwise high voltage systems are very limited for backup, at least in winter storm scenarios.</div><div><br><div>
<span style="border-collapse:separate;color:rgb(0,0,0);font-family:Palatino;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="border-collapse:separate;color:rgb(0,0,0);font-family:Palatino;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><span style="border-collapse:separate;color:rgb(0,0,0);font-family:Palatino;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><span style="border-collapse:separate;color:rgb(0,0,0);font-family:Palatino;font-variant:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><span style="border-collapse:separate;font-variant:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><span style="border-collapse:separate;font-variant:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word"><div style="color:rgb(0,0,0);font-family:Palatino;font-style:normal"><b>Bruce Erickson</b></div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal">Mendocino Solar Service</div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal">PO Box 1252</div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal">Mendocino, CA 95460</div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal">707-937-1701</div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal">707-937-1741 fax</div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal"><a href="mailto:bruce@mendocinosolar.com" target="_blank">bruce@mendocinosolar.com</a></div><div style="color:rgb(0,0,0);font-family:Palatino;font-weight:normal;font-style:normal"><br></div><div style="font-weight:normal"><font color="#a603a8" style="font-style:normal"><i>Connecting Mendocino County to Solar Since</i><span> </span></font><font color="#4e3fd3"><i>1994</i></font></div></div></span><br></div></span><br></div></span><br></div></span><br></div></span><br></span><br>
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<br><div><blockquote type="cite"><div>On Sep 12, 2018, at 6:26 PM, Marco Mangelsdorf <<a href="mailto:marco@pvthawaii.com" target="_blank">marco@pvthawaii.com</a>> wrote:</div><br><div><div style="font-family:Palatino-Roman;font-size:14px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif">Aloha all,<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif">At the risk of whacking at a hornet\u2019s nest\u2026lower voltage DC is soooo 80s and 90s especially when it comes to grid-tie applications with battery storage.<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif">The time of OutBack and Schneider and all the others doing 48VDC is drawing to close. Enough already. Thank you for your service.<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif">The sooner the industry fully migrates to higher voltage DC (Tesla, LG Chem, BYD and others), the better.<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif">marco<u></u><u></u></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div><div style="border-style:solid none none;border-top-color:rgb(181,196,223);border-top-width:1pt;padding:3pt 0in 0in"><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><b><span style="font-size:10pt;font-family:Tahoma,sans-serif">From:</span></b><span style="font-size:10pt;font-family:Tahoma,sans-serif"><span> </span>RE-wrenches [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" style="color:purple;text-decoration:underline" target="_blank">mailto:re-wrenches-bounces@<wbr>lists.re-wrenches.org</a>]<span> </span><b>On Behalf Of<span> </span></b>Peter Giroux<br><b>Sent:</b><span> </span>Wednesday, September 12, 2018 3:03 PM<br><b>To:</b><span> </span>RE-wrenches<br><b>Subject:</b><span> </span>Re: [RE-wrenches] Any thoughts on this approach to adding battery backup to an existing grid tie system will be appreciated.<u></u><u></u></span></div></div></div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt">Ken</span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"> <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt"> We have had terrific success with AC Coupling. Yes there are some differences from Dc Coupled systems but if built properly, customer is willing to learn how to use it and maintain it and you put the correct relays in to shut off the string inverters if battery voltage gets to high, great.</span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"> <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt"> If you have a customer that refuses to exercise the system, not check the batteries if they are fla's and overloads it when the power goes down then not so cool. We have customers that power shave with it, have had backup power for days until the power came back on as they monitored the loads and were judicious about use. Ray is right in the sense the customer needs to learn how to use the system or they can royally screw it up ( yes we have had two do this, one learned the other not ).</span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"> <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt"> The Radians have been great work horses for this application, sadly as Ray mentioned Outback has moved away from it as a primary solution.<span> </span></span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"> <u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt">peter giroux</span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt">ASAE</span><u></u><u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt">Atlanta</span><u></u><u></u></div></div><blockquote style="border-style:none none none solid;border-left-color:black;border-left-width:1.5pt;padding:0in 0in 0in 4pt;margin:5pt 0in 5pt 3.75pt" type="cite"><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><span style="font-size:10pt;font-family:Arial,sans-serif">----- Original Message -----<span> </span><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif;background-color:rgb(228,228,228)"><b><span style="font-size:10pt;font-family:Arial,sans-serif">From:</span></b><span style="font-size:10pt;font-family:Arial,sans-serif"><span> </span><a href="mailto:Ken@commonwealthsolar.com" title="Ken@commonwealthsolar.com" style="color:purple;text-decoration:underline" target="_blank">Ken Schaal</a><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><b><span style="font-size:10pt;font-family:Arial,sans-serif">To:</span></b><span style="font-size:10pt;font-family:Arial,sans-serif"><span> </span><a href="mailto:re-wrenches@lists.re-wrenches.org" title="re-wrenches@lists.re-wrenches.org" style="color:purple;text-decoration:underline" target="_blank">RE-wrenches</a><span> </span>;<span> </span><a href="mailto:cwsolar1@gmail.com" title="cwsolar1@gmail.com" style="color:purple;text-decoration:underline" target="_blank">Ken Schaal</a><u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><b><span style="font-size:10pt;font-family:Arial,sans-serif">Sent:</span></b><span style="font-size:10pt;font-family:Arial,sans-serif"><span> </span>Wednesday, September 12, 2018 8:11 PM<u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><b><span style="font-size:10pt;font-family:Arial,sans-serif">Subject:</span></b><span style="font-size:10pt;font-family:Arial,sans-serif"><span> </span>[RE-wrenches] Any thoughts on this approach to adding battery backup to an existing grid tie system will be appreciated.<u></u><u></u></span></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><u></u> <u></u></div></div><div><div style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif"><a href="https://www.youtube.com/watch?v=eyhkIfS5Z-Q" style="color:purple;text-decoration:underline" target="_blank">https://www.youtube.com/watch?<wbr>v=eyhkIfS5Z-Q</a><u></u><u></u></div></div><div class="MsoNormal" align="center" style="margin:0in 0in 0.0001pt;font-size:12pt;font-family:'Times New Roman',serif;text-align:center"><hr size="2" 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