[RE-wrenches] Enphase Off-Grid

[david quattro]

Very cool gentlemen, please let us know how it goes. I find this very
intriguing.



On Wed, Oct 15, 2025 at 6:38 PM MDElectricSolar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> We have the same situation with a Tesla power wall three, we are going to
> try to trick it with a Honda inverter generator, 7000 W.
> Michael D Nelson
> MD Electric & Solar, Inc.
> 707-684-0064 mobile
> 707-884-1862 office
> www.mdelectricsolar.com
> www.facebook.com/mdelectricandsolar
>
>
> On Oct 15, 2025, at 2:27 PM, Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
>
> I know Enphase now allows full off-grid, but I read their tech brief, and
> it requires a generator to be present for commissioning, I believe. Has
> anyone commissioned one of these systems off-grid?
>
> The reason I ask is that I have a new home build, and the utility meter
> won't be set until January or later. I could plausibly install the
> microinverters and batteries and get the system up and running to power the
> house during construction, prior to having a utility source. That should
> qualify them for the tax credit.
>
> If the off-grid mode can't be set up without a generator, I suppose it
> would be possible to "trick" the system by getting it commissioned with a
> generator on the AC input of the System Controller with the profile set to
> no export. That's not ideal, probably not advisable, and certainly not
> supported, but... as long as the generator source is clean enough to look
> like the grid...
>
> I reached out to Enphase to see if the generator requirement can be
> waived, which is the ideal scenario.
>
> I would be interested in hearing about any general experiences with
> Enphase in full off-grid use. I can't imagine there are that many out there
> yet.
>
>
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> Florida Certified Electrical Contractor EC13013208
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