What about using an AC Coupled solution? The IEEE 1547 standard should only be applied to the grid-tied inverter in that case since the hybrid inverter is isolated when the grid is down and does not contribute to the grid sell when the grid is up if there is no solar resource on the DC side (unless configured to do so). That way you could use Enphase which I believe is a 1547-2018 approved inverter. I wonder if that would meet their requirements.
I'm not up to speed on these "progressive" utility companies, but I would like to stay tuned in, so please keep us updated on the result. Jason Szumlanski On Wed, Aug 26, 2020 at 11:00 PM Mac Lewis <maclew...@gmail.com> wrote: > Yes, seems a little heavy handed to require this so quickly out of the > gates. This is Rocky Mountain Power specifically Eastern Utah, owned or > operated by Pacific Corp. This may be a way to get the customer to pay for > a transformer upgrade. They offered an alternative to this compliance > by utilizing an effective grounding transformer with associated relay > control system. I am gathering info on these requirements because its not > clear if this is a utility side transformer or if that would be customer > sided. > > They seem to be very concerned about these distributed resources > contributing to transient overvoltage events. > > I will say that this area has a very high proportion of solar, its on most > homes in this community, so I'm not sure how wide-spread this requirement > is. > > > On Wed, Aug 26, 2020 at 7:13 PM Harry Mahon <michael.ma...@sma-america.com> > wrote: > >> Mac – what utility is this? >> >> >> >> My understanding is that IEEE 1547.1-2020 contains the details of the >> testing protocol so that devices CAN be listed to 1547-2018. It got >> published in late May 2020. >> >> >> >> Are ANY inverters listed yet? My understanding is testing is a months >> long process and that would if the testing facilities have finalized the >> process they will use. >> >> >> >> Sounds like a way to force the transformer choice on you… >> >> >> >> Mike >> >> >> >> SMA America >> *Michael Mahon* >> Technical Trainer, Solar Academy >> 6020 West Oaks Boulevard, Suite 300 >> >> Rocklin, CA 95765 >> >> U.S.A. >> Mobile: +1 916 918 9412 >> * www.SMA-America.com >> <https://mailtrack.io/trace/link/9b578ad3dac3edcc18cd1ba277137131cda9eb4b?url=http%3A%2F%2Fwww.sma-america.com%2F&userId=1613865&signature=b59f374b419e386a>* >> >> >> >> Solar Academy: https://solaracademy.sma.de/en.html >> <https://mailtrack.io/trace/link/ec5341a31168a5c00aaa9574ea0280c9f12d64f9?url=https%3A%2F%2Fsolaracademy.sma.de%2Fen.html&userId=1613865&signature=2fa62a97dbc76463> >> >> >> >> SMA America Solar Academy webinars: >> https://solaracademy.sma.de/en/courses.html >> <https://mailtrack.io/trace/link/ba7bc3d0641d00e7819e6d1c1f9a25c166186cad?url=https%3A%2F%2Fsolaracademy.sma.de%2Fen%2Fcourses.html&userId=1613865&signature=15bc979a5aa39f72> >> >> Choose "United States" >> >> [image: A picture containing drawing, food Description automatically >> generated] >> <https://mailtrack.io/trace/link/fa88b779465f6a819249b594c399dfe8ea4c0273?url=https%3A%2F%2Feur02.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Fwww.sma-america.com%252FShadeFix%26data%3D02%257C01%257CMichael.Mahon%2540sma-america.com%257Ceb737bd7586646b4d14b08d811405661%257Ca059b96c28294d1188374cc1ff84735d%257C0%257C0%257C637278315315432372%26sdata%3DuyZ5K7ayyl6y%252Fa90qQ0%252F4r8WSV0PYLK1CYMJQxPVeCQ%253D%26reserved%3D0&userId=1613865&signature=2d260720e8bc9311> >> >> >> >> [image: Linkedin Logo] >> <https://mailtrack.io/trace/link/3f4cc29a0eee4c3ed6ba57d37eae939c6754d0bd?url=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2F364675&userId=1613865&signature=fab9bde26967b017> >> >> <https://mailtrack.io/trace/link/70d6a8ec5a968d055485b461ca39a0de20839b95?url=http%3A%2F%2Fwww.youtube.com%2Fplaylist%3Flist%3DPL840A5336CAC32332&userId=1613865&signature=ecf8e63b102e691e> >> [image: >> SMAAFORUM_ICON] >> <https://mailtrack.io/trace/link/7d37f0760ab73745220e1e1be51ca323483417a5?url=http%3A%2F%2Fsmaadvance.com%2Fsignup%2F&userId=1613865&signature=bf587746c4b62a51> >> Follow, Like, Share >> >> >> >> This email and any attachments thereto may contain SMA America, LLC >> confidential, privileged and private material for the sole use of the >> intended recipient. Any review, copying, or distribution of this email (or >> any attachments thereto) by others is strictly prohibited. If you are not >> the intended recipient, please contact the sender immediately and >> permanently delete the original and any copies of this email and any >> attachments thereto. Thank you. >> >> >> >> *From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> *On >> Behalf Of *Mac Lewis >> *Sent:* Wednesday, August 26, 2020 4:47 PM >> *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org> >> *Subject:* [RE-wrenches] Stackable Battery-Based systems complying to >> IEEE 1547-2018 standard >> >> >> >> Hi Wrenches, >> >> >> >> I am working on a design for an all-electric home whole-house backup. >> The utility is requiring either an inverter listed to IEEE 1547-2018 or >> utilize an effective grounding transformer with associated relay control >> system. Im unclear whether the grounding transformer is on the customer >> side or on the utility side, but I'd prefer to avoid this if possible. >> >> >> >> I probably need ~20kW of continuous backup in this case. I prefer to >> have everything stacked if possible, but I may be able to split up my >> critical load panels. >> >> >> >> Has anyone worked through this issue? I was planning on Sol-Ark but they >> don't comply with the IEEE 1547-2018 quite yet. I'm open to suggestions. >> >> >> >> Thanks >> >> >> >> -- >> >> >> >> >> >> >> >> Mac Lewis >> >> "Yo solo sé que no sé nada." *-Sócrates* >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <https://mailtrack.io/trace/link/342d61c5dcd96341597350a1adec5992442ef9c3?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=ba72fca244259190> >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> <https://mailtrack.io/trace/link/69aff0f0a9cf7c86eead28f3dacf936a52537729?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=65a0f7bcd3168c3d> >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> <https://mailtrack.io/trace/link/88b10e47d6921ed9b34a74f550ae58bbef65f62a?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=2654946a636a25f5> >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> <https://mailtrack.io/trace/link/4df766ef5cc927fe77a52b203fa279c70b93bd63?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=ad79dd8a051dd5b0> >> >> > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/df0a5fdd6a1d7c6c617877c9c7b2a7dd71c9e5da?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=37cc2225509f3b4d> > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/429c36f21c6a516a148479c2f2ef6e6171232c93?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=fc2305caba06fb86> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > <https://mailtrack.io/trace/link/f1d735d344ceca7beed7a1d8b131969d1be2bf21?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=fb1c6bf681e392cf> > > Check out or update participant bios: > www.members.re-wrenches.org > <https://mailtrack.io/trace/link/16986cc711fc44740dc4a190b6fa8ee2e320eee1?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=2ace941631f80acf> > >
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