<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">I didn\u2019t say it did. 3 options. The OEM are selling a product that isnt code complaint, doubtful. Or it is included in the UL listing or there isn\u2019t a UL standard for this to test to. </div><div dir="ltr"><br></div><div dir="ltr">I don\u2019t have time but a call to the companies that list this feature would clear it up. </div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr">Peltz power. </div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On Mar 31, 2021, at 10:56 AM, Jason Szumlanski <jason@floridasolardesigngroup.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="auto">Does UL1741 cover zero sell? I wasn't aware of that. I thought it just covered anti-islanding. If zero sell is covered, I don't see why a utility would not accept that. </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Mar 31, 2021, 11:51 AM Jay <<a href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="ltr">A number of companies have this feature which is under their UL listing. </div><div dir="ltr">SE</div><div dir="ltr">SolArk</div><div dir="ltr">To name 2. </div><div dir="ltr"><br></div><div dir="ltr">Are you saying that the UL listing isn\u2019t enough and that it needs 3rd party testing. </div><div dir="ltr">If so what organization/testing would that be?</div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr">Peltz power</div><div dir="ltr"><br><blockquote type="cite">On Mar 31, 2021, at 8:27 AM, Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank" rel="noreferrer">jason@floridasolardesigngroup.com</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="auto"><div>I wonder how quick these software based approaches are to respond to loads that drop off and momentary selling that may occur before production is curtailed. I think what Greg may be asking is whether there is a failsafe method to prevent backfeed. Without a battery, I'm not sure how that would be accomplished. It's an interesting question.</div><div dir="auto"><br></div><div dir="auto">I can see a small utility not accepting a non-failsafe software based solution unless it can be shown to be 100% effective via third party listing/certification.</div><div dir="auto"><br></div><div dir="auto">Jason Szumlanski</div><div dir="auto">Florida Solar Design Group<br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Wed, Mar 31, 2021, 7:29 AM Will White <<a href="mailto:will@solarenergy.org" target="_blank" rel="noreferrer">will@solarenergy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Many inverters have the option to zero-sell (no export to the grid) but you need an additional CT on the main service conductors so the inverter can monitor the loads and ramp down production if it starts to get close to producing more than the loads require. <div><br></div><div>I'd suggest getting into the manuals and white papers of the inverter manufacturers to determine if they can do this. I believe both SolarEdge and Enphase can do it. I'd assume others can as well.</div><div><br></div><div>Thanks,</div><div>Will</div><div><br></div><div><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><b style="font-size:12.8px">Will White</b><div style="font-size:12.8px">Curriculum Developer</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><img src="https://docs.google.com/uc?export=download&id=12H3Cu2gnX7TKTeETn1WsYqa8cp6gsEj1&revid=0B7yAwArWHgPbNzhGK00wT0diY1c1NWhlRlNocDRVd045eTFjPQ" width="420" height="52" data-unique-identifier=""><br></div><div style="font-size:12.8px"><span style="font-size:12.8px">e: </span><a href="mailto:will@solarenergy.org" style="font-size:12.8px" rel="noreferrer noreferrer" target="_blank">will@solarenergy.org</a><span style="font-size:12.8px"> </span><br></div><div><div style="font-size:12.8px"><span style="font-size:12.8px">w: <a href="http://www.solarenergy.org/" rel="noreferrer noreferrer" target="_blank">www.solarenergy.org</a> </span></div><div style="font-size:12.8px">p: 802-272-3092<br></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px"><div>NABCEP Certified PV Installation Professional</div><div># 093006-34</div></span></div><div><span style="color:rgb(102,102,102);font-family:Arial,sans-serif;font-size:x-small">Do you envision a world powered by renewable energy? </span><a href="http://solarenergy.org/donate" style="font-family:Arial,sans-serif;font-size:x-small" rel="noreferrer noreferrer" target="_blank">Be the change</a><span style="color:rgb(102,102,102);font-family:Arial,sans-serif;font-size:x-small">.</span></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 30, 2021 at 9:24 PM greg egan <<a href="mailto:greg@remotepowerinc.com" rel="noreferrer noreferrer" target="_blank">greg@remotepowerinc.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Wrenches, I've got a small system using SolarEdge inverter (4 kW) that <br>
is supposed to go in to a small town that does not allow selling power <br>
to the grid. That may change but that is how it stands now. The <br>
customer wants to use the power that is generated but can not sell or <br>
even give excess power away. Do any of you have any experience setting <br>
up a grid tie no battery system so that it can not sell to the grid <br>
under any circumstances? Just wondering before I dig any deeper if <br>
there's an obvious solution I'm missing. Thanks,<br>
<br>
Greg Egan<br>
Remote Power Inc.<br>
<br>
<br>
<br>
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