The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs). These proposed standards, known as Trial Standard Level 4 (TSL4), aim to tighten energy efficiency requirements across all types of EPSs. TSLs are a tool used by the DOE to set energy conservation benchmarks.
Labeling requirements will be mandated to meet the same International Eficiency Marking Protocol for External Power Supplies Version 3.0 as the previous Level V standard. Globally, it is expected that other nations will soon follow suit with the DoE Level VI standard.
The global regulatory environment surrounding the legislation of external power supply eficiency and no-load power draw has rapidly evolved over the past decade since the California Energy Commission (CEC) implemented the first mandatory standard in 2004.
The external power supply conservation standard rulemaking docket EERE-2008-BT-STD-0005 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking. There is no public meeting scheduled at this time. The comment period is closed.
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On June 23, 2025, the State Administration for Market Regulation issued an announcement on the implementation rules for quality supervision and random inspection of …
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Product Energy Efficiency - External Power Supplies. The rules apply to both the active efficiency and the no-load power consumption. Active efficiency …
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On June 23, 2025, the State Administration for Market Regulation issued an announcement on the implementation rules for …
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DOE undertook a rulemaking that concluded with a final rule in February 2014 to established new and amended energy conservation standards for external power supplies. …
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The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs). These proposed standards, …
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standards for External Power Supplies (EPSs). These proposed standards,known as Trial Standard Level 4(TSL4),aim to tighten energy eff ciency requirements across all types of …
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DOE undertook a rulemaking that concluded with a final rule in February 2014 to established new and amended energy conservation …
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The Standard Development and Maintenance Process OPEI is an accredited Standards Development Organization by the American National Standards Institute, and a …
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398 397 • External Power Supplies must meet a No-Load power requirement, which specifies the 399 maximum ac power that may be used by a qualifying external power …
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The next round of legislation is expected to come from Europe, as the current voluntary Code of Conduct (CoC) Tier 1 and Tier 2 standards are under review by the …
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Product Energy Efficiency - External Power Supplies. The rules apply to both the active efficiency and the no-load power consumption. Active efficiency is the average efficiency when a power …
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The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs). …
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active power over Ethernet injectors; docking stations for autonomous appliances; external power supplies placed on the market before 1 April 2025 solely as a service part or spare part for …
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398 397 • External Power Supplies must meet a No-Load power requirement, which specifies the 399 maximum ac power that may be used by a qualifying external power …
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External Power Supplies: Energy Eficiency Requirements In the early 1990’s, the U.S. Environmental Protection Agency (EPA) started a voluntary program to promote energy …
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