ENERGY STAR Power Adapters Could Dramatically Reduce America’s Electric Bill

"Power adapters are devices that convert AC (alternating current) power from a wall outlet into DC (direct current) power that is used to power electronic products. Adapters are crucial to the operation of virtually all small electronic devices, yet they tend to be very inefficient. In the United States alone, total electricity flowing through external and internal power supplies is about 207 billion kWh/year, equal to about $17 billion a year, or six percent of the national electric bill. On average, ENERGY STAR-qualified power adapters will be 35 percent more efficient."