On Mon, Jan 12, 2009 at 2:49 PM, Dirk-Willem van Gulik <[email protected]
> wrote:
> > Does anyone have the working for this? I would LOVE to see it, given
> that
> > (for a start):
>
> No - but willing to guess that they either took the total energy
> consumption and divided it - or took a reasonable number x number of
> servers; assumed 100watt and took it from there.
>
It's not quite clear how he worked it out - all the news stories say is that
he's submitted his findings for [possible] future inclusion in a publication
from the US Institute of Electrical and Electronics Engineers.
The BBC story seems to suggest that he may have included the carbon cost of
the requesting client computer within the calculation ("Speaking to the BBC,
he said a combination of clients, networks, servers and people's home
computers all added up to a lot of energy usage") - but that quote may have
been taken out of context.
Leo Hickman at the Guardian has done a reasonable job at trying to get the
bottom of the figures (and notes the conflict of interest):
http://www.guardian.co.uk/environment/ethicallivingblog/2009/jan/12/carbon-emissions-google
Frankie
--
Frankie Roberto
Experience Designer, Rattle
0114 2706977
http://www.rattlecentral.com
