[RE-wrenches] 25 kW backfeed limit circuit

[Jerry Shafer]

Mac
I have done this, same as you with no issues from the utility (PG&E). I did
tell them it was behind a security pass code and could only be changed with
that code which was secure.
Jerry

On Tue, Jun 25, 2019, 9:47 PM Mac Lewis <maclewis1 at gmail.com> wrote:

> Hello Wrenches,
>
> I'm working with a small utility on a large residence for grid-tie solar
> with a wind-turbine.  They have a 25 kW backfeed limit.  Its a 4 stack
> radian system with about 25 kW of solar and 10 kW of wind.  The wind is AC
> coupled Bergey and the solar is DC coupled with FM100s.  My idea was to use
> the Radians to limit the solar to 15 kW and let the wind do its thing.
> However, the utility doesn't like the idea that this limit could be changed
> without their knowledge.
>
> Has anyone designed and/or implemented a backfeed limiting circuit that
> could knock some charge controllers off-line in case that 25 kW limit is
> reached.  Is there anything off-the-shelf that can do that?
>
> Thanks in advance
>
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
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