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From: dorner@pequod.cso.uiuc.edu (Steve Dorner)
Newsgroups: comp.sys.mac
Subject: Re: Leaving your mac on (was Re: Mac as a telephone answering machine?)
Message-ID: <1990Feb12.193815.14767@ux1.cso.uiuc.edu>
Date: 12 Feb 90 19:38:15 GMT
References: <1990Feb8.072021.17778@deimos.cis.ksu.edu> <1990Feb9.145320.28022@iex.uucp> <1990Feb12.171702.17091@ux1.cso.uiuc.edu> <25d708be.6ee2@polyslo.CalPoly.EDU>
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Reply-To: dorner@pequod.cso.uiuc.edu (Steve Dorner)
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Organization: University of Illinois at Urbana-Champaign
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In article <25d708be.6ee2@polyslo.CalPoly.EDU> jdinkins@viper.calpoly.edu.UUCP (Jeff Dinkins) writes:
> Has anyone who leaves his mac(IIcx) on all the time ever bothered
>to figure out how much this costs in electricity a month?

My SE/30 manual (I know, the IIcx probably uses more) claims 75 watts max.
So, an SE/30 costs at most:

	75 watts * 24 hours/day * 30 days/month * 1/1000 watt/kilowatt *
	.10 dollars/(kilowatt*hour) = 5.40 dollars/month
	
(Our electric rates are $.13 per kilowatt-hour in the summer.  In the winter,
they're about half that; $.10 is a ball-park average.)
--
Steve Dorner, U of Illinois Computing Services Office
Internet: s-dorner@uiuc.edu  UUCP: {convex,uunet}!uiucuxc!dorner