<div><div dir="auto">I agree with William from an energy perspective in the long run it\u2019s more practical and elegant to DC couple. Usually the monitoring works out cleaner too if solar is just \u2018Solar.\u2019 as opposed to ac-coupled solar, which can be confusing.</div><div dir="auto"> Having said that, we built a 3-SolArk-15K in parallel, splitting about 20kW of legacy AC-coupled pv (SMA Sunny Boys) in the Gen ports. Did it this way because of distance. This system has been running about 1.5 years with no problems. \U0001f44d</div><div dir="auto"> We\u2019ve had good experience with Franklin, but have only done 2 of those. I lean toward SolArk for better or worse, and almost always happy with their reliability, flexible functionality, and customer service. I\u2019m with Jason regarding Solaredge - I\u2019ll never install them again.</div></div><div><div dir="auto"> According to Tesla website, Powerwalls are not compatible with generators for battery recharging. Correct me if I\u2019m wrong. But if Tesla batteries can\u2019t accept Gen charging, to me this is a huge weakness. </div><div dir="auto"><br></div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 9, 2025 at 8:47\u202fAM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Two options:<div dir="auto"><br></div><div dir="auto">1. AC couple existing inverter to a battery capable inverter. </div><div dir="auto"><br></div><div dir="auto">2. Replace existing inverter. </div><div dir="auto"><br></div><div dir="auto">I favor option 2. </div><div dir="auto"><br></div><div dir="auto">Option 1 is only preferred if gaining access to the existing inverter for replacement is difficult. An example would be a micro-inverter system.</div><div dir="auto"><br></div><div dir="auto">New AIO inverters allow true high voltage PV input so the existing stringing will probably not need to be modified. </div><div dir="auto"><br></div><div dir="auto"><div dir="auto">I\u2019m new to this so type of upgrade so I welcome any corrections to these opinions. I did replace a Sunny Boy in my shop with a Soul Ark and it\u2019s working great!</div><div dir="auto"><br><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com" target="_blank">www.millersolar.com</a><br></div></div></div></div><div dir="auto"><div dir="auto"><br></div><div dir="auto"><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 9, 2025 at 8:26\u202fAM Jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Is there a consensus as to what equipment to use for adding battery backup to normal GT inverter? <br>
<br>
<br>
<br>
I\u2019ve had a few people ask and I actually haven\u2019t done it. <br>
<br>
Thx <br>
Jay<br>
<br>
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