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Applicable Territory: USA
Standard: Mandatory

Pre-empted by the U.S. Energy Independence & Security Act of 2007 (H.R.6)

Washington Engrossed Substitute House Bill 1062

A new chapter to Title 19 was added in 2005 that includes efficiency standards for certain products sold or installed in the state. It states that efficiency of single-voltage external AC to DC power supplies shall be measured in accordance with the United States environmental protection agency's Test Method for Calculating the Energy Efficiency of Single-Voltage External AC to DC and AC to AC Power Supplies, by Ecos Consulting and Power Electronics Application Center, dated August 11, 2004. This mandate will be effective January 1, 2007.


Effective Date

Performance Requirements

Nameplate Power Output (Pno)

No-Load Power

Nameplate Power Output (Pno)

Average Active Efficiency


Washington: January 1, 2007 (mandatory)

0 to < 10W

10 to 250W

≤ 0.5W

≤ 0.75W

0 to 1W

> 1 to 49W

> 49 to 250W

≥ 0.49 x Pno

≥ 0.09 x Ln(Pno) + 0.49

≥ 0.84

Where Pno is the Nameplate Output Power of the unit under test. Ln refers to the natural logarithm.

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