[RE-wrenches] Zero sell permitting

[James Jarvis]

The interesting thing to me is that a ton of industrial equipment has
regenerative braking that puts power back "on the grid". Lots  of things
with a frequency drive and a motor that stops has been built this way for
30 years. Things that stop like CNC machines and elevators. Pretty much
anything that stops quickly and doesn't have a big braking resistor on it
just pumps the power back to the AC side.

In 20 years of owning and running industrial facilities, no utility has
ever once had any concern about that.

FWIW,


-James Jefferson Jarvis
APRS World, LLC
+1-507-454-2727
http://www.aprsworld.com/


On Tue, Feb 11, 2025 at 4:18 PM Sam Haraldson via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> The utility here in Montana requires any small-generator facility to have
> an interconnection agreement with them.  A standard net-metered agreement
> is called a Level 1 Agreement and a non-export system falls into their
> Level 3 Agreement.  The relevant text from that agreement is as follows:
>
> *The... requirements are designed to ensure that the Small Generator
> Facility... are designed to prevent back-feeding of power from the
> generating facility to the utility grid during power outages, and to
> match... power characteristics with respect to voltage and frequency.*
>
> Cheers,
> Sam
>
> [image: OnSite Energy]
> <https://www.google.com/url?q=https://onsiteenergyinc.com/&source=gmail-html&ust=1677085494759000&usg=AOvVaw2NN36GoM1sjnS4RdC8Svt->
>
> SAM HARALDSON
> Operations Specialist
> (406) 551-6135
> 1515 N. Rouse Ave Bozeman, MT 59715
> Locally owned and operated since 2012
> [image: B Corporation] <https://onsiteenergyinc.com/bcorp>
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