PC Network Services saves energy by programming computers to sleep while not in use.

Our measurements indicate
you can save per year:

462 kilowatt hours for each CRT monitor you turn off at night (x$.12 = $55/monitor/year)

189 kilowatt hours for each plasma monitor you turn off at night (x$.12 = $22.68/monitor/year)

220 kilowatt hours for each PC you let sleep during the night (x $.12 = $26.40/pc/year)

50-User Network Savings:

$1,320/year for letting PC’s sleep at night +

$1,134/year for letting flat-screen monitors
sleep at night

Even if you already let your monitors sleep at night and weekends, you still will:

Save 273 kilowatt hours per year for each CRT you replace with plasma (x$.12 = $33/year)

In 5 years you will have paid for the plasma screen in electrical savings. (5 x $33 = $165)

Programs such as Verdiem Surveyor extend the power savings further by automating the process of powering off PC’s at night while still allowing scheduled patching activities to occur.

Small Business PC Power Management Cost Savings

Without Power Management (PC’s + monitors running all night):

Type of PC	Watts (Active)	Qty	Extended watts	Hours used in a year	kwH	Cost/kwH	Annual Cost to operate if active 24x7
Desktop	85	20	1,700
Laptop	15	3	45
15 inch CRT	66	10	660
20 inch LCD	32	10	320
Server	120	4	480
Total			3,205	8,760	28075	$.10	$2,807

With Power Management:

	Extended watts	Hours used in a year	kwH	Cost/kwH	Annual Cost
Daylight (8x5)	3.205	2.760	8,832	$.10	$883
Nights + weekends	619	6,000	3,714	$.10	$371
Total	3,824	8,760	12,546	$.10	$1,254

Greener Computing Home Page :: Goals :: Take the Greener Computing Quiz! :: How Green is Your Business?

Limit Paper Use :: PC Power Management :: Web or Tele-Conferencing :: Recycle :: Turn Things Off :: Ecological Responsibility

Tele-Commuting :: Bill Electronically :: Buy MacBook - Not So Fast :: Buy Energystar or EPEAT

Virtualization :: Use PowerNap Technology :: Vpro Technology :: Use Leed Lighting