Water pumping on grid tie [RE-wrenches]

[Phil Undercuffler]

Correct me if I'm wrong, but my understanding is that if you have
time-of-use metering then you also have time-of-use NET metering!  If the
pumps run all night then you are buying power at the low rate and selling
back PV power all afternoon at the high rate--sounds like an easy sell to
me.

Also, to Baran re "What good is cutting edge when all it does is bite you?"
an old friend in the computer biz once admonished me to always be aware of
the difference between the leading edge and the bleeding edge.

Enjoy the Sun!

Phil Undercuffler
Positive Energy

"The most beautiful experience we can have is the mysterious....
the fundamental emotion which stands at the cradle of true art
and true science"  --Albert Einstein

----- Original Message -----
From: Travis Creswell, Ozark Solar <ozsolar at ipa.net>
To: <RE-wrenches at topica.com>
Sent: Wednesday, August 15, 2001 10:08 PM
Subject: Re: Water pumping on grid tie [RE-wrenches]


> Hello William,
>
> Due the typical utility rate structures (incredibly high kw demand in
> relationship to the low kwh usage = very expensive commercial electricity)
> that most electrical services dedicated commercial water pumps are on you
> might be able to save them some money but it would be tricky.  The best
> thing you could do to save money is reduce the peak demand.  A batteryless
> system couldn't do that as the big pumps are probably already limited to
> running at night to get into the cheaper off peak electricity.  I am
> familiar with analyzing commercial energy conservation projects for the
best
> possible pay backs and might be able to help you do a quick financial
> analysis just to see if its even feasible.  Let me know of I can be of any
> help.
>
> Travis Creswell
> Ozark Solar
>
> ----- Original Message -----
> From: "William Miller" <wrmiller at slonet.org>
> To: <RE-wrenches at topica.com>
> Sent: Wednesday, August 15, 2001 4:37 PM
> Subject: Water pumping on grid tie [RE-wrenches]
>
>
> > Pals:
> >
> > Do any of you have any knowledge of anyone using grid tie systems to
> offset
> > energy costs for water pumping?  Of particular usefulness would be any
> > small water districts doing so.  Thanks in advance.
> >
> > William Miller
> >
> > __________________________________________________________________
>
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