TOU metering report [RE-wrenches]

[Joel Davidson]

A non-Wrench just sent me this:
        On Bill Brooks' most recent posting, he's got it wrong -a TOU meter is
not
5$ extra a month, it's less than $1 extra. If you have standard metering
(PV or no PV) and use absolutely no electricity, you'll still get a bill
for $4.82 every month.

        Since a large percentage of people work outside the home on weekdays,
TOU
can work out positively for most residential customers, PV or no PV,
-unless you use so little electricity overall that it would take too long
to recoup the one-time fee of $277.

        One minor, but nice benefit of PG&E's TOU is that they program the meter

to display instantaneous watts, which can be pretty useful considering that
a utility meter happens to be a first-class instrument for accuracy.

Bill Brooks wrote:

> Allan,
>
> That type of evaluation is fine for a spot check, but it leaves out several
> very important factors that can cause the numbers to go the other way.
> Safest bet in California is to stick with the tiered rate unless the
> customer already has experience that their saving money with the TOU rate
> without PV (as is obvious from your example).
>
> The current tiered rate structure in California is extremely beneficial to
> PV and makes it very difficult to justify the additional $277 for the meter
> and additional $5 per month for the meter charge. Just a caution so that
> installers don't take this analysis and run with it and end up with angry
> customers.
>
> Bill.
>
> -----Original Message-----
> From: Allan Sindelar [mailto:allan at positiveenergysolar.com]
> Sent: Wednesday, June 26, 2002 12:20 PM
> To: New wrenches posting
> Subject: Fw: TOU metering report [RE-wrenches]
>
> Wrenches,
>     This report was posted to the SW-GTI forum that was mentioned here about
> 1-2 months ago. While it doesn't affect us in New Mexico (no TOU), I am
> forwarding it to this group for those of us who can benefit.
> Allan at Positive Energy
>
> ----- Original Message -----
> From: "Chris Brock" <cbrock at cisco.com>
> To: <TraceSWGTI at eCompute.org>
> Sent: Wednesday, June 26, 2002 2:05 AM
> Subject: TOU metering report
>
> > This is not related to the GTI, however, I thought this might be of
> > interest to report on how Time of Use billing is working out for me. I
> > distilled a lot data; to make it easier to comprehend, I've tried to
> > explain it in plain English:
> >
> >
> > The PG&E summer rate schedule began May1:
> >
> > peak (M-F noon to 6PM only):     31.5 cents /kwhr
> > off-peak:                                     8.5 cents /kwhr
> >
> > from May 1 to Jun 25:
> >
> > I consumed  88 peak + 633 off-peak, totaling 721 kwhrs
> >
> > I generated 427 peak + 492 off-peak, totaling 919 kwhrs
> >
> > Looking just at off-peak, I used 633 kwhrs, but generated only 492 kwhrs,
> > so I had to buy 141 kwhrs from PGE, which cost me $12.41
> >
> > Looking at just peak, I used only 88 kwhrs, and generated 427 kwrhs,
> > which, because of its superior value, the surplus of 339 kwhrs earned me
> > $94.86 in credits
> >
> > Standard non-TOU metering is 12.5 cents per kwhr for the first tier. If I
> > had been on standard metering, I would have earned a credit of $24.75 for
> > the surplus of 198 kwhrs I put into PG&E's grid.
> >
> > Because of TOU metering, the time of day is taken into consideration for
> > the value of the electricity I put into the grid:
> >
> > $94.86 -$12.41 = $82.45
> >
> > Bottom line: For me, TOU more than tripled (3.33 times) the value of the
> > electricity I exchanged with the public grid.
> >
> > Chris
> >
> >
>
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