generated: '2026-07-27'
method: searched
source: https://ecollection.ferc.gov/api/TaxonomyHistory
docs: https://ecollection.ferc.gov/taxonomyHistory
scheme: dated XBRL taxonomy releases (YYYY-MM-DD), bound to a reporting window
current_version: '2026-04-01'
note: FERC publishes no dated changelog or release notes for either HTTP API. The one real, dated version
  history it does publish is the eForms XBRL taxonomy release history, harvested here verbatim from FERC's
  own anonymous TaxonomyHistory endpoint on 2026-07-27 (25 releases across five form families). Release
  notes for the current taxonomy are served as a base64 PDF from GET /api/TaxonomyHistory/getReleaseFiles.
  The Open Data API at api.data.ferc.gov has no changelog of any kind — new data assets appear in the
  Data Catalog unannounced.
entries:
- version: '2026-04-01'
  date: '2026-04-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  - Form 2
  - Form 6
  - Form 60
  - Form 714
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2026-04-01 covering Form 1, Form 2, Form 6, Form 60, Form
    714.
  schemas:
  - form: Form 1
    versionID: 68
    applies_from: 2026 Q1
    applies_through: open
    revisionNumber: 1345
  - form: Form 2
    versionID: 69
    applies_from: 2026 Q1
    applies_through: open
    revisionNumber: 1346
  - form: Form 6
    versionID: 67
    applies_from: 2026 Q1
    applies_through: open
    revisionNumber: 1343
  - form: Form 60
    versionID: 66
    applies_from: 2025 Q4
    applies_through: open
    revisionNumber: 1342
  - form: Form 714
    versionID: 65
    applies_from: 2025 Q4
    applies_through: open
    revisionNumber: 1344
- version: '2025-04-01'
  date: '2025-04-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  - Form 2
  - Form 6
  - Form 714
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2025-04-01 covering Form 1, Form 2, Form 6, Form 714.
  schemas:
  - form: Form 1
    versionID: 56
    applies_from: 2025 Q1
    applies_through: 2025 Q4
    revisionNumber: 1290
  - form: Form 2
    versionID: 59
    applies_from: 2025 Q1
    applies_through: 2025 Q4
    revisionNumber: 1291
  - form: Form 6
    versionID: 58
    applies_from: 2025 Q1
    applies_through: 2025 Q4
    revisionNumber: 1292
  - form: Form 714
    versionID: 55
    applies_from: 2024 Q4
    applies_through: 2024 Q4
    revisionNumber: 1294
- version: '2024-04-01'
  date: '2024-04-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  - Form 2
  - Form 6
  - Form 60
  - Form 714
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2024-04-01 covering Form 1, Form 2, Form 6, Form 60, Form
    714.
  schemas:
  - form: Form 1
    versionID: 48
    applies_from: 2024 Q1
    applies_through: 2024 Q4
    revisionNumber: 1098
  - form: Form 2
    versionID: 49
    applies_from: 2024 Q1
    applies_through: 2024 Q4
    revisionNumber: 1097
  - form: Form 6
    versionID: 47
    applies_from: 2024 Q1
    applies_through: 2024 Q4
    revisionNumber: 1101
  - form: Form 60
    versionID: 45
    applies_from: 2023 Q4
    applies_through: 2024 Q4
    revisionNumber: 1108
  - form: Form 714
    versionID: 46
    applies_from: 2023 Q4
    applies_through: 2023 Q4
    revisionNumber: 1103
- version: '2023-11-01'
  date: '2023-11-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2023-11-01 covering Form 1.
  schemas:
  - form: Form 1
    versionID: 39
    applies_from: 2023 Q4
    applies_through: 2023 Q4
    revisionNumber: 1028
- version: '2023-04-01'
  date: '2023-04-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  - Form 2
  - Form 6
  - Form 60
  - Form 714
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2023-04-01 covering Form 1, Form 2, Form 6, Form 60, Form
    714.
  schemas:
  - form: Form 1
    versionID: 37
    applies_from: 2023 Q1
    applies_through: 2023 Q3
    revisionNumber: 976
  - form: Form 2
    versionID: 38
    applies_from: 2023 Q1
    applies_through: 2023 Q4
    revisionNumber: 977
  - form: Form 6
    versionID: 36
    applies_from: 2023 Q1
    applies_through: 2023 Q4
    revisionNumber: 975
  - form: Form 60
    versionID: 35
    applies_from: 2023 Q1
    applies_through: 2023 Q3
    revisionNumber: 974
  - form: Form 714
    versionID: 34
    applies_from: 2023 Q1
    applies_through: 2023 Q3
    revisionNumber: 973
- version: '2022-04-01'
  date: '2022-04-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 60
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2022-04-01 covering Form 60.
  schemas:
  - form: Form 60
    versionID: 28
    applies_from: 2000 Q4
    applies_through: 2022 Q4
    revisionNumber: 805
- version: '2022-01-01'
  date: '2022-01-01'
  type: xbrl-taxonomy-release
  forms:
  - Form 1
  - Form 2
  - Form 6
  - Form 714
  breaking: null
  highlights: FERC eForms XBRL taxonomy release 2022-01-01 covering Form 1, Form 2, Form 6, Form 714.
  schemas:
  - form: Form 1
    versionID: 24
    applies_from: 2000 Q4
    applies_through: 2022 Q4
    revisionNumber: 688
  - form: Form 2
    versionID: 25
    applies_from: 2000 Q4
    applies_through: 2022 Q4
    revisionNumber: 689
  - form: Form 6
    versionID: 23
    applies_from: 2000 Q4
    applies_through: 2022 Q4
    revisionNumber: 692
  - form: Form 714
    versionID: 27
    applies_from: 2000 Q4
    applies_through: 2022 Q4
    revisionNumber: 679