CUI Explorer

Critical Energy Infrastructure Information

Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.

Registry statusNARA & DoD
MarkingCEII
Organizational index groupCritical Infrastructure
Updated2026-05-15

This page exposes extracted CUI registry and authority analysis as crawlable text. The interactive explorer remains the operational workspace for filtering, comparison, and voice-agent aligned study.

Registry comparison

Field NARA Registry DoD Registry
Category description Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure. Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.
Category marking CEII CEII
Banner marking CUI//SP-CEII No corresponding field
Basic or Specified Specified No corresponding field
Authorities 18 CFR 388.113, 10 CFR 1004.13 18 CFR 388.113
DoD applicable policies No corresponding field None listed
Required warning statement No corresponding field None listed
Required dissemination control CUI//SP-CEII None listed
Examples No corresponding field Electrical distribution system, FC AS builds/layouts, Sub stations, Power grids, HVAC
Registry date May 7, 2025 2026-05-15

Authority analysis

Authority title
Registry authority evidence compiled; primary authority text analysis pending
Authorities
Multiple registry authorities
Source currency
NARA last reviewed: May 7, 2025 | DoD detail accessed: 2026-05-15
How the authority operates
NARA registry status: Specified. Per-authority NARA status values: Specified. NARA banner marking evidence: CUI//SP-CEII. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.

Trigger conditions

  • NARA category scope: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.

Covered information

  • Electrical distribution system
  • FC AS builds/layouts
  • Sub stations
  • Power grids
  • HVAC
  • Registry-described information: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.

Specified controls

Nara basic or specified
Specified
Nara authority rows
18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII || 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII
Nara banner markings
CUI//SP-CEII

Safeguarding and dissemination controls

NARA Registry
CUI//SP-CEII
DoD Registry
None listed
Authority analysis
No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
Basic or Specified
Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.

Related authorities

Authority-by-authority detail

18 CFR 388.113

Listed by: NARA Registry, DoD Registry, Related authorities

Designation evidence

  • NARA authority row: 18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII.
  • DoD authority row: 18 CFR 388.113. DoD lists this citation for the category; this DoD detail page does not display a separate Basic/Specified field.
  • Related authority evidence: 18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII
  • Related authority evidence: DoD lists this authority for the category; the linked authority text is extracted below when available.
  • Registry designation context: Specified, CUI//SP-CEII. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.
  • Registry designation for this category is Specified with banner CUI//SP-CEII.

Extracted authority meaning

  • (a) Scope. This section governs the
  • Registry designation context: Specified, CUI//SP-CEII. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.

Operating conditions

  • NARA category scope used with this authority: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.
  • DoD category scope used with this authority: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.
  • 18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII
  • DoD lists this authority for the category; the linked authority text is extracted below when available.
  • NARA registry status: Specified. Per-authority NARA status values: Specified. NARA banner marking evidence: CUI//SP-CEII. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.
  • NARA category scope: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.
  • Extracted authority condition: When a FOIA requester brings suit to compel disclosure of informa- tion for which a person has claimed privileged treatment, the Commission will notify the person who submitted the documents of the suit. [Order 769, 77 FR 65476, Oct. 29, 2012, as amended by Order 833, 81 FR 93748, Dec. 21, 2016] § 388.113 Critical Energy/Electric In- frastructure Information (CEII).
  • Extracted authority condition: For purposes of this section: (1) Critical electric infrastructure infor- mation means information related to critical electric infrastructure, or pro- posed critical electrical infrastructure, generated by or provided to the Com- mission or other Federal agency other than classified national security infor- mation, that is designated as critical electric infrastructure information by the Commission or the Secretary of the Department of Energy pursuant to sec- tion 215A(d) of the Federal Power Act.
  • Extracted authority condition: This section governs the procedures for submitting, designating, handling, sharing, and disseminating Critical Energy/Electric Infrastructure Information (CEII) submitted to or generated by the Commission.
  • Extracted authority condition: Critical Electric In- frastructure Information is exempt from mandatory disclosure under the Freedom of Information Act, 5 U.S.C. 552(b)(3) and shall not be made avail- able by any Federal, State, political subdivision or tribal authority pursu- ant to any Federal, State, political subdivision or tribal law requiring pub- lic disclosure of information or records pursuant to section 215A(d)(1)(A) and (B) of the Federal Power Act.

Safeguarding and dissemination controls

  • NARA registry control evidence: status Specified; banner marking CUI//SP-CEII.
  • Nara basic or specified: Specified
  • Nara authority rows: 18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII || 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII
  • Nara banner markings: CUI//SP-CEII
  • No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
  • Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.
  • Extracted authority control: (5) Submitters of CEII shall receive notification of a limited release of CEII no less than five business days before disclosure, except in instances where voluntary sharing is necessary for law enforcement purposes, to maintain in- frastructure security, to address poten- tial threats, when notice would not be practicable, and where there is an ur- gent need to quickly disseminate the information.
  • Extracted authority control: The non-disclosure agreement will, at a minimum, require the following: CEII will only be used for the purpose for which it was requested; CEII may only be discussed with authorized recipi- ents; CEII must be kept in a secure place in a manner that would prevent unauthorized access; CEII must be de- stroyed or returned to the Commission upon request; the Commission may audit the recipient’s compliance with the non-disclosure agreement; CEII provided pursuant to the agreement is not subject to release under either FOIA or Sunshine Laws; a recipient is obligated to protect the CEII even after a designation has lapsed until the CEII Coordinator determines the informa- tion should no longer be designated as CEII under paragraph (e)(2) of this sec- tion; and a recipient is required to promptly report all unauthorized dis- closures of CEII to the Commission.
  • Extracted authority control: (vi) Subject to the exceptions set forth in paragraph (f)(5) of this section, when a CEII requester seeks informa- tion for which CEII status has been claimed, or when the Commission itself is considering release of such informa- tion, the CEII Coordinator or any other appropriate Commission official will notify the person who submitted the information and give the person an op- portunity (at least five business days) in which to comment in writing on the request.
  • Extracted authority control: To obtain access to CEII, an agency employee must sign an ac- knowledgement and agreement, which states that the agency will protect the CEII in the same manner as the Com- mission and will refer any requests for the information to the Commission.
  • Extracted authority control: I (4–1–18 Edition) § 388.113 of the organization, and that all indi- viduals in the organization that have access to the CEII will agree to be bound by a non-disclosure agreement that must be executed.
  • Extracted authority control: Any officers, employees, or agents of the Commission who knowingly and willfully disclose CEII in a manner that is not authorized under this section will be subject to ap- propriate sanctions, such as removal from the federal service, or possible re- ferral for criminal prosecution.
  • Extracted authority control: The jus- tification must provide how the infor- mation, or any portion of the informa- tion, qualifies as CEII, as the terms are defined in paragraphs (c)(1) and (2) of

Authority excerpts

Most relevant extracted authority passage

(5) Submitters of CEII shall receive notification of a limited release of CEII no less than five business days before disclosure, except in instances where voluntary sharing is necessary for law enforcement purposes, to maintain in- frastructure security, to address poten- tial threats, when notice would not be practicable, and where there is an ur- gent need to quickly disseminate the information.

Extracted authority passage 2

The non-disclosure agreement will, at a minimum, require the following: CEII will only be used for the purpose for which it was requested; CEII may only be discussed with authorized recipi- ents; CEII must be kept in a secure place in a manner that would prevent unauthorized access; CEII must be de- stroyed or returned to the Commission upon request; the Commission may audit the recipient’s compliance with the non-disclosure agreement; CEII provided pursuant to the agreement is not subject to release under either FOIA or Sunshine Laws; a recipient is obligated to protect the CEII even after a designation has lapsed until the CEII Coordinator determines the informa- tion should no longer be designated as CEII under paragraph (e)(2) of this sec- tion; and a recipient is required to promptly report all unauthorized dis- closures of CEII to the Commission.

Extracted authority passage 3

(vi) Subject to the exceptions set forth in paragraph (f)(5) of this section, when a CEII requester seeks informa- tion for which CEII status has been claimed, or when the Commission itself is considering release of such informa- tion, the CEII Coordinator or any other appropriate Commission official will notify the person who submitted the information and give the person an op- portunity (at least five business days) in which to comment in writing on the request.

Extracted authority passage 4

To obtain access to CEII, an agency employee must sign an ac- knowledgement and agreement, which states that the agency will protect the CEII in the same manner as the Com- mission and will refer any requests for the information to the Commission.

Extracted authority passage 5

I (4–1–18 Edition) § 388.113 of the organization, and that all indi- viduals in the organization that have access to the CEII will agree to be bound by a non-disclosure agreement that must be executed.

Extracted authority passage 6

When a FOIA requester brings suit to compel disclosure of informa- tion for which a person has claimed privileged treatment, the Commission will notify the person who submitted the documents of the suit. [Order 769, 77 FR 65476, Oct. 29, 2012, as amended by Order 833, 81 FR 93748, Dec. 21, 2016] § 388.113 Critical Energy/Electric In- frastructure Information (CEII).

10 CFR 1004.13

Listed by: NARA Registry, Related authorities

Designation evidence

  • NARA authority row: 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII.
  • Related authority evidence: 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII

Extracted authority meaning

None listed

Operating conditions

  • NARA category scope used with this authority: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.
  • 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII
  • NARA registry status: Specified. Per-authority NARA status values: Specified. NARA banner marking evidence: CUI//SP-CEII. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.
  • NARA category scope: Critical energy infrastructure information means specific engineering, vulnerability, or detailed design information about proposed or existing critical infrastructure that: (i) Relates details about the production, generation, transportation, transmission, or distribution of energy; (ii) Could be useful to a person in planning an attack on critical infrastructure;... and (iii) Does not simply give the general location of the critical infrastructure.

Safeguarding and dissemination controls

  • NARA registry control evidence: status Specified; banner marking CUI//SP-CEII.
  • Nara basic or specified: Specified
  • Nara authority rows: 18 CFR 388.113 | status: Specified | banner: CUI//SP-CEII || 10 CFR 1004.13 | status: Specified | banner: CUI//SP-CEII
  • Nara banner markings: CUI//SP-CEII
  • No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
  • Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.