[RE-wrenches] Fronius USA available 2023 & 2024 ?

[Howie Michaelson]

Hi Mick,
Unlike others in the list, I am still mostly happily using SolarEdge for my
straight grid tied roof mounted arrays. There have been significant hiccups
with service, although not so much recently, and the failure rate is higher
than I like, but it hasn't been dramatic for me. For systems that require
RSD, I have not found any other equipment as easy and consistent as
SolarEdge, although admittedly I really don't like switching technologies
unless there is a really good reason or in forced to. Also, I've been very
anti micro inverters for more than a decade, partly fueled by Enphase's
early major failure rate and communications dysfunction and probably
largely fueled by my prejudice towards the technology.
I also have not been inclined to use their battery based systems, even
though their architecture seemed smart at the time. And I'm also fading on
using them for AC coupling because I've had some significant issues using
them that way, and other (DC coupled) systems have come a long way.
All that being said, I certainly would move away from RSD systems if there
wasn't a need for them. Therefore, I would look at other string inverters
like SMA ( I haven't used them much at all recently), or perhaps Solis
(haven't used them at all), which I believe respond well to frequency
shifting.
And, not knowing your circumstances, I might suggest DC coupled systems
instead. There are many good options out there at this point.
Sorry this wasn't more on point.
Howie

On Thu, Aug 24, 2023, 4:23 PM Mick Abraham via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi, Mechanix~ I asked a Greentech location about quantity four Fronius
> string inverter PRIMO 6.0-1. (6kW AC output, single phase 240 volt 60 hz)
> This p/n is in the Greentech portal but my particular branch hasn't done
> much with Fronius. Today the branch manager told me "Fronius no longer
> exists."
>
> Can any of you confirm or correct this report? I have an off-grid
> opportunity for which I wish to AC couple some of the PV. If Fronius USA
> has indeed "left the building", are there other string inverters that can
> be selected for country code "off grid 60 hz"? I'd like for the PV
> inverters to only curtail their output wattage if there's a frequency shift
> from the grid forming inverter (frequency/watt). Schneider XW Pro units
> would be forming the grid. Schneider has a white paper # 990-6421 on AC
> coupling but this document is almost three years old & no help at all in
> finding compatible PV inverters. Rapid shutdown is not mandated for this
> gig & each array would be evenly illuminated. IIRC, the List hasn't been
> highly enamored with SolarEdge in recent years; is that still the consensus?
>
> Thanks as always; the Wrench List is the Bomb!
>
> Mick Abraham, Proprietor
> www.abrahamsolar.com
>
> Landline: 970-731-4675
> Cell phone or for text messaging: 970-946-6584
> ᐧ
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