<div dir="ltr">We installed the Sonnen system in Anguilla where the utility does not allow export and charges for export power. The Sonnen was not designed to work in that scenario, so we have had to design and implement a software and hardware solution for that problem. Our controller takes SOC data from the Sonnen and disconnects the inverter when the SOC is about 100%. We're still tweaking it but it should solve the problem cheaply.</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 13, 2017 at 12:16 PM, August Goers <span dir="ltr"><<a href="mailto:august@luminalt.com" target="_blank">august@luminalt.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div class="m_-1783986640121635466WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">All –</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Yea, it’s amazing how much buzz Tesla was able to generate with their Powerwall without even having a product ready for sale. I’ve been keeping track of these next generation lithium-ion batteries so that we can keep up with the demand of all the tech savvy early adopters here in the Bay Area. It’s tough when there aren’t any products really ready for prime time!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Tesla is only releasing an AC version of the PW2 with built in inverter. So, everything will be AC-coupled including to SolarEdge inverters. For backup, you must install a Tesla supplied “energy gateway” which basically looks like a 200 A automatic transfer switch used to isolate the backup panel (also referred to as the critical or protected loads panel) when the grid goes down. I haven’t actually seen an energy gateway spec sheet so I don’t know the specifics of how it works. Current transformer meters are required in the main panel and backup panel. There are spec sheets out there on the net with more information including simple single line diagrams of the setup. Dimensions are 45.3 in x 29.7 in. x 6.1 in. Various use scenarios should be possible including self consumption, non-export, and charge/discharge profile programming (arbitrage) but it will always be a balance between these types of use cases versus keeping it topped off for battery backup. I don’t have enough experience across a wide fleet of installations to know how we will balance these arbitrage profile programming modes versus always being ready for a power outage. In California we are also preparing for the Self Generation Incentive Program (SGIP) reopening and how to qualify for the Fed tax credit when paired with PV. There are a lot of constraints to work with!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Our SolarEdge rep confirmed that they are focusing on pairing their StorEdge product with the LG RESSU10H li-ion battery coming out later this year. This will be DC coupled.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The obvious benefits of these li-ion batteries are a) small size, b) cycle capacity, and c) ease of install. The high voltage output pioneered by the PW1 allows relatively small wires between the battery and inverter. This is a major benefit and is surely the future of where battery systems are going. Lead acid is tried and true, but has limited cycle capacity and the 48 volt limit will always make for a somewhat bulky and slow installation.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">August</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@<wbr>lists.re-wrenches.org</a>] <b>On Behalf Of </b>Rebekah Hren<br><b>Sent:</b> Saturday, March 11, 2017 4:07 PM<br><b>To:</b> RE-wrenches<span class=""><br><b>Subject:</b> Re: [RE-wrenches] Tesla 2.0</span></span></p></div><p class="MsoNormal"> </p><div><p class="MsoNormal">I have the same questions as Jay, I would really like to see the real specs for the Tesla 2.0. </p><div><div class="h5"><div><p class="MsoNormal"> </p><div><p class="MsoNormal">Other questions I have:</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">-How will the Tesla 2.0 be installed in coordination with a PV system - I can only assume any PV system would have to be AC coupled with the Tesla? </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">-Does the Tesla inverter handle all grid-sell functionality and keep PV inverter online during outage? </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">-How does this impact the SolarEdge Storedge system that was designed to work with the Gen 1 Tesla that didn't have an inverter? The Storedge factsheet does not match the new topology: <a href="http://www.solaredge.com/sites/default/files/se_storedge_inverter_datasheet_na.pdf" target="_blank">http://www.solaredge.com/<wbr>sites/default/files/se_<wbr>storedge_inverter_datasheet_<wbr>na.pdf</a></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Thanks for any insight!</p></div><div><p class="MsoNormal">Rebekah</p></div><div><div><p class="MsoNormal"> </p><div><p class="MsoNormal">On Sat, Mar 11, 2017 at 9:51 AM, Chris Mason <<a href="mailto:cometenergysystems@gmail.com" target="_blank">cometenergysystems@gmail.com</a>> wrote:</p><div><p class="MsoNormal">Don't ignore Sonnen, their ECO16 is a solid Lithium based solution. We installed one in Anguilla and, once we got through some software issues, the system performed solidly.</p><div><p class="MsoNormal"> </p></div></div><div><div><div><p class="MsoNormal"> </p><div><p class="MsoNormal">On Fri, Mar 10, 2017 at 9:43 PM, jay <<a href="mailto:jay.peltz@gmail.com" target="_blank">jay.peltz@gmail.com</a>> wrote:</p><p class="MsoNormal" style="margin-bottom:12.0pt">HI All,<br><br>I hesitate to bring this up, but I’ve had some questions come my way about the “new” Tesla 2.0<br>battery backup units. And with the demise of Aquion, looks like Lithium and LA are pretty much the only games in town.<br><br>I have been able to find quite little on line ( surprise), pretty much nothing from Tesla directly, but some from other folks by google search.<br><br>Does anyone on the list here know anything solid?<br>For example.<br>what inverter is being used?<br>how do they stack?<br>battery chemistry?<br>actual size ( depending on which info it changes)<br>are they actually shipping?<br><br><br>Thanks<br><br>jay<br><br>peltz power<br>______________________________<wbr>_________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.<wbr>org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/<wbr>options.cgi/re-wrenches-re-<wbr>wrenches.org</a><br><br>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/<wbr>re-wrenches@lists.re-wrenches.<wbr>org/maillist.html</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.<wbr>htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a></p></div><p class="MsoNormal"><br><br clear="all"></p><div><p class="MsoNormal"> </p></div></div></div><p class="MsoNormal"><span class="m_-1783986640121635466gmail-hoenzb"><span style="color:#888888">-- </span></span></p><div><div><p class="MsoNormal"><span style="color:#888888">Chris Mason</span></p><div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">NABCEP Certified Solar PV Installer™</span><span style="color:#888888"></span></p></div><div><p class="MsoNormal"><span style="color:#222222">Solar Design Engineer</span><span style="color:#888888"></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">Generac Generators Industrial technician</span><span style="color:#888888"></span></p></div></div><div><p class="MsoNormal"><span style="color:#888888"> </span></p></div><div><p class="MsoNormal"><span style="color:#888888"><a href="http://www.cometenergysystems.com" target="_blank">www.cometsolar.com</a></span></p></div><div><p class="MsoNormal"><span style="color:#888888"><a href="tel:(264)%20235-5670" value="+12642355670" target="_blank">264.235.5670</a></span></p></div><div><p class="MsoNormal"><span style="color:#888888"><a href="tel:(869)%20662-5670" value="+18696625670" target="_blank">869.662.5670</a></span></p></div><div><p class="MsoNormal"><span style="color:#888888">Skype: netconcepts</span></p></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.<wbr>org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/<wbr>options.cgi/re-wrenches-re-<wbr>wrenches.org</a><br><br>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/<wbr>re-wrenches@lists.re-wrenches.<wbr>org/maillist.html</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.<wbr>htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a><br><br></p></div><p class="MsoNormal"><br><br clear="all"></p><div><p class="MsoNormal"> </p></div><p class="MsoNormal">-- </p><div><div><p class="MsoNormal">Tel: <a href="tel:(336)%20266-8800" value="+13362668800" target="_blank">336.266.8800</a><br>NABCEP Certified Solar PV Installation Professional™ 091209-85<br>NC Licensed Electrical Contractor</p></div></div></div></div></div></div></div></div></div></div>
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<br></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™</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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