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This article explores President Bush's sudden interest in standby power and its implications for energy savings. Standby power, the electricity consumed by appliances when they are not in active use, accounts for a significant portion of household electricity usage—approximately 5% in the U.S. We examine the extent of standby energy use in homes, the savings potential highlighted by case studies, and innovative ways to reduce this wasted energy. The findings also contribute to discussions on reducing global CO2 emissions through better energy management practices.
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Why Did President Bush Suddenly Start Talking about Standby Power? Alan Meier Lawrence Berkeley National Laboratory
Standby Energy Use and Energy Savings Opportunities • Why did President Bush get interested in standby power? • How large is standby power? • Savings opportunities
President Bush Saw This Display…. And wrote an Executive Order about standby …
A TOUR OF LEAKING APPLIANCES IN A TYPICAL US HOME All measurements given in watts
(answering machine) (modem) 6.5 yrs
5 W Our New Neptune Draws 5 W
80.4W Tokyo 80W
How Large Is Standby? • 5% of residential electricity (~50W) • 20 appliances/home • TVs and VCRs down, but number up • No estimates for commercial & industrial • Similar levels in other Europe, Japan • Urban Chinese homes: ~30W already! • ~1% of global CO2 emissions
Reducing Standby Power 3 examples…
Thermographs of Satellite/Internet/DVR Box “OFF” - 17 Watts ON - 21 Watts Power Supply Microprocessor
The 2002 Calypso Washer. It’s bigger, better… and it uses 1/10 the standby power of Neptune.
Reducing Standby Power • Components • Low power components (include displays) • Design • Don’t energize unneeded components • Power Supply • Reduce no-load loss • Improve efficiency at low loads • Move switch to high-voltage side
End More Information akmeier@lbl.gov http://standby.lbl.gov