How much does power go for nowadays ?
Tim Pozar
pozar at lns.com
Tue Aug 30 12:13:26 PDT 2005
Jim Hickstein wrote:
>>selling us the power at a loss if they are paying that PG&E tarif, the other
>>datacenter (I doubled the amount of power we would draw to cover the power
>>needed for cooling), it was pretty much that PG&E tarif.
>
>
> Surely a co-lo adds value in the form of a UPS, gen-set, etc., even if these
> things didn't consume any more power on their own. (OK, an automatic
> transfer switch doesn't dissipate a lot of power, but a UPS sure does.) I
> would expect to pay a fair bit more than the PG&E kilowatt-hour charge.
>
> Are co-lo's doing any sort of voluntary load-shedding, or time-sensitive
> billing, I wonder, to reduce their power cost? (Not that they really have
> much room to maneuver.)
There is also the fact that every time you go through a transformer,
UPS, battery set, etc. there is some effeciceny and loss that you have
to build into the price. What PG&E charges is what goes into the
building. What you get at your server may mean that another 25% or more
was wasted as heat before it even got to you.
Tim
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