In case you were looking for another reason to kick that YouTube / CuteOverload habit, researcher-for-hire David Sarokin has calculated that the Internet accounts for 9.4% of all electricity consumed in the U.S. and 5.3% worldwide between clients, servers, and networking equipment (See Fig. 1 after the jump).
That’s a whopping 350 billion kWh at home and 868 billion ’round the globe annually (data breakdown below). And the web’s not getting any smaller.
Uh-oh.
Datacenters suck a lot of power - that’s no secret. Along with ensuring physical security, stable power supplies, beefy backbones, and cooling on a massive scale (!), these server farms pack blades that churn 24/7/365 about as tightly as the poor pigs in the Meatrix. The government is well-aware of all of this - the Congress and the EPA recently had a huddle and concluded that something’s gotta be done (See Fig 2.).
But the real problem is the PC you’re staring at right now.
Individuals and offices who leave their desktop PCs and monitors on 24/7/365 are hemorrhaging electricity and developing holes in their wallets. Turning off one desktop PC + monitor combo will save about $90 each year according to Microsoft’s Small Business Center. “Sleep” mode helps - power consumption drops about 91%. Want to really save the world? Start hibernating.
From MSFT:
Lab tests done by Dell show that a PC running Microsoft Office uses 42.7 watts, McCall says. If it runs continuously at that rate for 365 days, at 7 cents per kilowatt-hour, the power consumption costs would be $26.18 for the PC and $45.99 for a regular monitor, for a total of $72.17 for the workstation.
Meanwhile, if a PC was kept in “sleep” mode for 20 hours, for every four hours “on,” as Dell recommends, the annual energy costs per PC would total $16.17 with a regular monitor and $9.88 with a flat panel. Using “hibernate,” the costs would be slightly cheaper.
It’s also worth pointing out that laptops use roughly 1/6 as much electricity as desktop PCs and almost nothing when in “sleep mode,” in case you were looking for another reason to justify that shiny new MacBook Pro.
But if you’ve got a PC that’s sitting and running just for the hell of it, or one that’s humming 24/7/365 without a pair of eyes gawking, it’s time to pull the plug. Need a little help with energy management and use Windows (for some reason)? Grab LocalCooling and do something nice for yourself.
(ht: Slashdot)


