EFFICIENCY STANDARDS
Efficiency standards for external power supplies
A cut-out-and-keep infographic of the changing standards and how they’re implemented across the globe
It’s less than a decade since the first mandatory standard for power supplies was implemented. In December 2004 the California Energy Commission mandated higher average efficiencies in external power supplies. And since this date, the global regulatory environment surrounding the legislation of external power supply efficiency and no-load power draw has rapidly evolved, undoubtedly having a real impact on global power consumption. With the benefit of a reduced draw on the power grid comes challenges and uncertainties for the electronics industry as it tries to keep up with this dynamic regulatory environment. As different countries and regions enact stricter requirements and move from voluntary to mandatory programs, it has become vital that OEMs continually track
the most recent developments to ensure compliance and avoid costly delays or fines. Moving forward, it is almost certain that these
standards will continue to evolve as power technologies improve and the price of energy continues to rise. Here in the U.S, the Department of Energy, recently issued a notice of proposed rulemaking (NOPR) that would lay out the first mandatory regulations for external battery chargers and further tighten regulations on external power supplies, effectively the Level VI efficiency standard. The proposal on the table would mandate no-load efficiencies down to 0.1 W for external power supplies ranging from 1 W ~ 49 W, boost mandatory average efficiency by about 1%, and set standards for models with power ratings above 250 W for the first time.
Figure 1: Summary of performance thresholds for each efficiency level
Figure 2: Infographic of implemented power standards to 2013 18 CIE Power Supplement May 2013
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