Electric Motors

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As defined in the Code of Federal Regulations (CFR), “electric motor” means a machine that converts electrical power to rotational mechanical power.  The scope of this webpage only includes the subset of electric motors regulated in 10 CFR 431, Subpart B and does not include those small electric motors regulated in 10 CFR 431, Subpart X.  There is also a seperate product website for dedicated-purpose pool pump motors.

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 final rule pertaining to test procedures for electric motors. This final rule amends the existing scope of DOE's test procedures for electric motors consistent with related updates to the relevant industry testing standard (i.e., for air-over electric motors, electric motors greater than 500 horsepower, electric motors considered small, inverter-only electric motors, and synchronous electric motors); adds test procedures, an appropriate metric, and supporting definitions for additional electric motors covered under the amended scope; and updates references to industry standards to reference current versions. Furthermore, DOE is adopting certain industry provisions related to the prescribed test conditions to further ensure the comparability of test results. DOE is also amending provisions pertaining to certification testing and the determination of represented values for electric motors other than dedicated-purpose pool pump motors, and re-locating such provisions consistent with the location of the certification requirements for other covered products and equipment. Finally, DOE is adding provisions pertaining to certification testing and the determination of represented values for dedicated-purpose pool pump motors.

  • The effective date of this rule is November 18, 2022.
  • The final rule changes will be mandatory for product testing starting April 17, 2023. 
  • The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register November 18, 2022.
  • The incorporation by reference of certain other publications listed in the rule was approved by the Director as of June 4, 2012 and February 3, 2021.

Notice of Petition

Notice of Petition

  • Federal Register; 84FR32437 (July 8, 2019)
Notice of Petiton
  • Federal Register, 82FR50844 (November 2, 2017)

Final Determination

Notice of Final Determination

  • Federal Register, 85FR40270 (July 6, 2020)

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.


Notification of a Webinar and Availability of Preliminary TSD

Request for Information
Notice of Public Meeting

Public Meeting Information:

There is no public meeting scheduled at this time.


Certification, Compliance, Labeling, and Enforcement

Certification, Compliance, Labeling, and Enforcement for Electric Motors and Small Electric Motors; Withdrawal; Proposed rule; Withdrawal

  • Federal Register, 86FR59887 (October 29, 2021)
  • The proposed rule that published in the Federal Register on June 24, 2016 at 81 FR 41377 is withdrawn as of October 29, 2021.

Certification, Compliance, Labeling, and Enforcement for Electric Motors and Small Electric Motors

Certification, Compliance, Labeling, and Enforcement for Electric Motors and Small Electric Motors; NOPR

  • Federal Register, 81FR41377 (June 24, 2016)

The Certification, Compliance, Labeling, and Enforcement for Electric Motors and Small Electric Motors rulemaking docket EERE-2014-BT-CE-0019 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

Submitting Public Comments

The comment period is closed.

Test Procedure

Final Rule
  • Federal Register, 87FR63588 (October 19, 2022)

Notice of Proposed Rulemaking

  • Federal Register, 86FR71710 (December 17, 2021).

Final rule; delay of effective date

Final Rule

  • Federal Register, 86FR7798 (February 2, 2021)
  • The effective dates of the final rule published January 4, 2021, at 86 FR 4, and the accompanying correction published January 15, 2021, at 86 FR 3747, are delayed to March 21, 2021
  • Federal Register (January 4, 2021)
Request for Information
  • Federal Register, 85FR34111 (June 2, 2020)

Comment Extension 

Request for Information

The docket EERE-2017-BT-TP-0047 contains all notices, public comments, and supporting documents pertaining to this rulemaking.

Public Meeting Information

There is no public meeting scheduled at this time.

Submitting Public Comments

Comment period is closed.

Current Standard

Electric motors manufactured and distributed in commerce, as defined by 42 U.S.C. 6311(7), must meet the energy conservation standards specified in the Code of Federal Regulations at 10 CFR 431.25 through 431.26.

Current Test Procedure

Manufacturers must follow the test procedure methods specified in 10 CFR 431.14 through 431.21 to determine that electric motors that are currently manufactured or distributed into commerce are in compliance with DOE standards.

Helpful Links


Labeling Requirements

DOE has established labeling requirements in section 10 CFR 431.31 through 431.32 of the Code of Regulations for the permanent nameplates of electric motors for which standards are prescribed in section 10 CFR 431.25.

Records Maintenance Requirements

DOE has established records maintenance requirements for electric motor manufacturers in section 10 CFR 431.403 of the Code of Regulations.  These requirements describe the types, organization, and retention duration of the required documentation.


DOE has established regulations on certification and compliance in section 10 CFR Part 431.35 through 431.36 of the code of Federal Regulations.


For information on current test procedure waivers, see DOE’s Waivers webpage
For information about obtaining test procedure waivers, see 10 CFR 431.401.


DOE's Office of Hearings and Appeals has authorized exception relief for certain electric motors. 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.

Import and Export Provisions

10 CFR 431.404 contains provisions on importing electric motors into the United States.

10 CFR 431.405 contains provisions on exporting electric motors from the United States.

Subpoena Authority for Energy Efficiency

10 CFR 431.406 explains subpoena authority given to the Secretary of Energy related to carrying out part 431 of the Code of Federal Regulations.

Confidentiality of Electric Motor Data and Information

10 CFR 431.407 explains the protocol for confidentiality requests for manufacturers or private labelers of electric motors to follow when submitting data and information to the DOE.

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 431, Subpart W.

Contact information

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