[RE-wrenches] Zero sell permitting

Jason Szumlanski jason at floridasolardesigngroup.com
Tue Feb 11 18:03:47 PST 2025


Zero sell is a bit of an ambiguous term, at least as far as inverter
manufacturers are concerned. For example, Enphase offers a "no export" grid
profile for it's microinverters, but it relies on consumption CTs that are
not completely accurate and the speed at which it can curtail solar will
inevitably allow some power to flow in reverse through the meter. We have a
municipal utility here that flips out if a watt of reverse current is
detected. They immediately fire off a nasty letter to the owner threatening
to disconnect their electric service if not rectified immediately.

So be careful about what equipment you are installing and whether it is
truly capable of actual no export. If that is the case, it's behind the
meter, and here in Florida technically the utility would have no leg to
stand on in terms of restricting it. No netmetering agreement would be
required in my opinion.

Jason Szumlanski
Florida Solar Design Group

On Tue, Feb 11, 2025, 4:28 PM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> When doing a zero sell install. What are people’s experience with needing
> utility approval?
>
> It would seem as being behind the meter you don’t need it. But just
> wondering as I’ve had a few people ask me especially from California given
> the ridiculously high electricity costs.
>
> Thanks in advance
> Jay
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