[Noisebridge-discuss] PG&E Bill
jim
jim at well.com
Mon Dec 7 21:29:13 UTC 2009
other than satisfying curiosity, i don't think
it'll be worth the effort to measure the power used
by the eight-footers. that said, i'm curious and
will probably try to measure them. we'd estimated
about 1.5 Amps per fixture (and i think that's
likely high).
there'll be a difference in cost between
* using a lot of the eight footers
and
* using a fewer number of CFLs or some CFLs along
with a small number of separately switched eight-
footers. what might be significant is the costs of
fixtures for CFLs--puts the imperative on getting
freebies.
On Mon, 2009-12-07 at 10:40 -0800, Rachel McConnell wrote:
> Jim, do you have any sense as to the power efficiency or lack thereof of
> the current fluorescent ballasts? It seems worth at least doing some
> math to figure out if replacing some or all of them would be worth the
> cost. The math should of course include the significant additional time
> required. I can do a first pass at this math if you can help me with
> starting points for the current ballasts.
>
> Rachel
>
> jim wrote:
> > probably good to start a lighting thread.
> >
> > one conceptually easy fix is to separate the
> > existing flourescent lights and switch each on or off
> > separately.
> >
> > we've estimated something like 1.5 Amps for each
> > eight-foot fixture. also, it's possible that fixtures
> > without bulbs are leaking some power.
> > i'm for LEDs but suspicious of the current crop of
> > socket-ready lamps, mainly wrt mechanical aspects.
> > CFLs are probably more efficient, but we have only
> > a few fixtures that'll take them.
> > note that there area bulb sockets in the ceiling
> > that are likely switched--we'll have to do the PITA
> > hunt to figure the wiring out.
> >
> > maybe we can come up with a mix of LEDs for
> > low-level general lighting and flourescents to
> > illuminate particuar working areas.
> >
> > as to other power aspects, the cold season is upon
> > us, and it looks like "the kitchen" is coming
> > together: both suggest greater power bills.
> > what's the possibility of using propane or similar
> > room heaters? and what's the possibility of
> > controlling the kinds of cooking and refrigeration
> > appliances we add? also, we should be aware of the
> > efficiencies of ventilation systems ("fart fans" in
> > the toilet rooms, darkroom vent fan, others).
> >
> >
> >
> >
> > On Sun, 2009-12-06 at 15:46 -0800, Jeffrey Malone wrote:
> >> Rather than starting a new thread, I'll just revive this one.
> >>
> >> We have received our new PG&E bill for the period of 11/4-12/4.
> >>
> >> The bill may be viewed here:
> >> http://tehinterweb.com/PGE/PGE120609.pdf
> >>
> >> To summarise, the bill is for $353.73, a drop of about $115 from the
> >> previous bill.
> >> We used 2214Kwh over the period, at 71.4 per day, as compared to the
> >> 73.6 we used for the previous billing cycle.
> >>
> >> The reason for the drop is due to a power rate drop. If you compare
> >> the bills, you'll see the cost per Kwh in the last billing cycle was
> >> approx $0.187880254, whereas for the most recent, it was approx
> >> $0.131825327 -- about 1/3rd less.
> >>
> >>
> >> I would still encourage us to look into what we can do to help reduce
> >> power usage. The lighting, I believe, is still the largest drain and
> >> one of the most unnecessary ones.
> >> The amount we're using is about $11.41/day or $0.48/hour, which seems
> >> small, but if we were to cut out half our current lighting, we'd
> >> likely cut our power usage by as much as a third.
> >>
> >> Anyone have any ideas on lighting?
> >>
> >> Jeffrey
> >>
> >>
> >> On Thu, Nov 5, 2009 at 12:49 AM, Jeffrey Malone
> >> <ieatlint at tehinterweb.com> wrote:
> >>> At some point I'll have a better method of posting these, but right
> >>> now I'll just throw this out there since I'm sure people are curious:
> >>>
> >>> http://tehinterweb.com/PGE110509.pdf
> >>>
> >>> In short, it's $468.44 and we used 2136Kwh (that's 73.6Kwh per day and
> >>> 3Kw per hour!).
> >>>
> >>>
> >>> Anyway, read it if you're curious, bitch if you think we're using too
> >>> much, whatever.
> >>>
> >>> Jeffrey
> >>>
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> >>
> >
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