External Power Supplies

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As defined in the Code of Federal Regulations (CFR), “external power supply” means an external power supply circuit that is used to convert household electric current into DC current or lower-voltage AC current to operate a consumer product. 10 CFR 430.2 Manufacturers have been required to comply with the U.S. Department of Energy (DOE) energy conservation standards for external power supplies since 2007.

Current Standard | Current Test Procedure | Ongoing Rulemaking for Standards | Ongoing Rulemaking for Test Procedure | Helpful Links


Recent and Ongoing Activities

DOE has published a Federal Register notice reopening the public comment period for its Request for Information (RFI) regarding energy conservation standards for external power supplies that published on May 20, 2020. The request provided an opportunity for submitting written comments, data, and information by July 6, 2020. Prior to the end of the comment period for the request of information, DOE received a request from a group of industry trade groups seeking additional time to consider the applicability and impact of an updated energy conservation standard for this equipment. In light of this request, DOE is reopening the public comment period for submitting comments for an additional 30 days.

  • Frequently Asked Questions on the request for information pertaining to energy conservation standards for External Power Supplies.

DOE has published a Federal Register notice initiating a data collection process through this request for information (RFI), to consider whether to amend DOE’s current energy conservation standards for External Power Supplies (EPS). This RFI solicits information from the public to help DOE determine whether amended standards for EPSs would result in significant energy savings and whether such standards would be technologically feasible and economically justified. As part of this RFI, DOE seeks comment on whether there have been sufficient technological or market changes since the most recent standards update that may justify a new rulemaking to consider more stringent standards. Specifically, DOE seeks data and information that could enable the agency to determine whether DOE should propose a “no new standard” determination because a more stringent standard: would not result in a significant savings of energy; is not technologically feasible; is not economically justified; or any combination of the foregoing.

  • Frequently Asked Questions on the request for information pertaining to energy conservation standards for External Power Supplies.

DOE has publihsed a Federal Register notice extending the public comment period for its notice of proposed rulemaking (“NOPR”) pertaining to test procedures for external power supplies. On December 6, 2019, DOE published a proposal to amend the test procedures for external power supplies. The proposal provided an opportunity for submitting written comments, data, and information by February 4, 2020. On January 21, 2020, DOE received a request from the USB Implementers Forum, Inc. to extend the public comment period by 14 days.

DOE has published a Federal Register notice of proposed rulemaking and request for comment pertaining to test procedures for external power supplies.

DOE has published a Federal Register final rule codifying into the Code of Federal Regulations the provisions of the Power and Security Systems Act of 2017 and the EPS Improvement Act of 2017. 84 FR 437 (January 29, 2019).

  • The effective date of this rule is January 29, 2019.

For the latest information on the planned timing of future DOE regulatory milestones, see the current Office of Management and Budget Unified Agenda of Regulatory and Deregulatory Actions. All planned dates are preliminary and subject to change.

Standards

DOE has published a Federal Register notice request for information pertaining to energy conservation standards for external power supplies. 85FR30636 (May 20, 2020).

DOE has published a Federal Register final rule codifying into the Code of Federal Regulations the provisions of the Power and Security Systems Act of 2017 and the EPS Improvement Act of 2017. 84 FR 437 (January 29, 2019).

DOE undertook a rulemaking that concluded in May 2016 pertaining to service and spare parts for external power supplies. 81 FR 30157 (May 16, 2016).  This rule codifies the provisions of the EPS Service Parts Act of 2014 and establishes related reporting requirements.  The rulemaking docket EERE-2015-BT-CRT-0013 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

 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.  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.

 

Public Meeting Information:

There is no public meeting scheduled at this time.

Submitting Public Comments

The comment period is closed.

Test Procedure

DOE has issued a pre-publication Federal Register notice extending the public comment period for its notice of proposed rulemaking pertaining to test procedures for external power supplies.

DOE has published a Federal Register notice of proposed rulemaking and request for comment pertaining to test procedures for external power supplies. 84FR67106 (December 6, 2019).

DOE undertook a rulemaking that concluded with a final rule in August 2015 to revise to the external power supplies test procedure. 80 FR 51424.  The external power supplies test procedure rulemaking docket EERE-2014-BT-TP-0043 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.  

Public Meeting Information

There is no public meeting scheduled at this time.

Submitting Public Comments

The comment period is closed.


Current Standard

External power supplies manufactured and distributed in commerce, as defined by 42 U.S.C. 6291(16), must meet the energy conservation standards specified in the Code of Federal Regulations at 10 CFR 430.32(w).


Current Test Procedure

To determine that external power supplies that are currently manufactured or distributed into commerce are in compliance with DOE standards, manufacturers must follow the test procedure methods specified at 10 CFR 430, Subpart B, Appendix Z.


Helpful Links

Compliance

DOE has established regulations on certification, compliance, and enforcement in the CFR at 10 CFR Part 429.  These regulations cover statistical sampling plans, certified ratings, certification reports, record retention, and enforcement.  More information on these regulations is available here.

Waivers

For information on current test procedure waivers, see DOE’s Waivers webpage.

For information about obtaining test procedure waivers, see 10 CFR 430.27.

Exceptions

DOE's Office of Hearings and Appeals has authorized exception relief for certain external power supplies.. For information on these exception relief cases, see the Office of Hearing and Appeals listing of Product Efficiency Cases.

For information about obtaining exception relief, see 10 CFR part 1003.

Guidance and Frequently Asked Questions

For information on further guidance and answers to Frequently Asked Questions on all covered products, see DOE’s Further Guidance database.

State Exemptions to Federal Pre-emption

DOE has not exempted any state from this energy conservation standard. States may petition DOE to exempt a state regulation from preemption by the Federal energy conservation standard. States may also petition DOE to withdraw such exemptions. For details, see 10 CFR part 430, subpart D .

Small Business Exemptions

Any manufacturer of a covered product with annual gross revenues that do not exceed $8,000,000 from all its operations and meets certain other conditions may apply for an exemption to the energy conservation standard. For details, see 10 CFR part 430, subpart E.

ENERGY STAR®

Find tips and guidance for making your home, workplace, or vehicle more energy efficient visit EnergySavers.gov.

DOE supports the testing and verification of ENERGY STAR® products in close collaboration with the Environmental Protection Agency.

Contact information

For more information related to this product, please email:
ApplianceStandardsQuestions@ee.doe.gov

 


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