Regulatory & compliance

FERC Filings (eLibrary)

Every document filed with or issued by the Federal Energy Regulatory Commission, rate cases, pipeline certificates, hydro licensing, rulemakings, and enforcement across electric, natural gas, oil, and hydropower. Each record carries the docket number (the join key across an entire proceeding), filed/issued/posted dates, document class, filer and recipient affiliations, and a direct document-download link. Two years of history loaded; refreshed daily.

EndpointGET /v1/ferc-filings

SourceFERC eLibrary (elibrary.ferc.gov)

Authx-api-key, a free key works

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What it returns

One record per accession number. Filter by docket (e.g. ER = electric rates, RP = gas pipeline rates, CP = pipeline certificates, P = hydro, RM = rulemaking) or by library (Electric, Gas, Oil, Hydro, Rulemaking). Documents surface when POSTED, up to ~4 days after filing. See the live example below for the full field set.

Filters

accession_number	Direct lookup by FERC accession number (e.g. '20260708-3001').
docket_number	Docket number, root ('RP26-930', 'P-5737') or full sub-docket ('RP26-930-000'). Returns every document in that proceeding.
library	FERC library, code or name: E/Electric, G/Gas, O/Oil, H/Hydro, RM/Rulemaking, Gen/General. (Rare multi-library documents carry a concatenated value like 'RulemakingElectric', FERC's own encoding, and only match that exact string.)
category	Issuance = BY FERC (orders, notices); Submittal = TO FERC (company filings).
class_type	Case-insensitive substring against document class + type (e.g. 'order', 'tariff', 'protest', 'environmental').
text	Case-insensitive substring against the document description (e.g. a company name).
since	Lower bound (YYYY-MM-DD inclusive) on the sort_by date field.
until	Upper bound (YYYY-MM-DD inclusive) on the sort_by date field.
sort_by	Default posted_date (when FERC published the document, filings can post up to ~4 days after filing).
sort_order	Default: desc (most recent first).
limit	Maximum records to return. Default 50, max 500.

Example request

curl "https://api.keyvex.com/v1/ferc-filings?limit=1" \
  -H "x-api-key: YOUR_KEY"

Response

{
  "results": [
    {
      "description": "Letter order accepting Natural Gas Pipeline Company of America LLC's 06/22/2026 filing of revised tariff records to reflect a Negotiated Rate Agreement under Rate Schedule FTS with Mansfield Power and Gas, LLC under RP26-930.",
      "document_id": "90699555-0D35-CCF6-86D4-9F415E500000",
      "source_url": "https://elibrary.ferc.gov/eLibrary/filedownload?fileid=9A515593-7785-C1E8-9708-9F415E500000",
      "reference": "{90699555-0D35-CCF6-86D4-9F415E500000}-{9A515593-7785-C1E8-9708-9F415E500000}",
      "filed_date": "2026-07-08",
      "class_types": [
        {
          "document_class": "Order/Opinion",
          "document_type": "Delegated Order"
        }
      ],
      "issued_date": "2026-07-08",
      "transmittal_count": 1,
      "docket_prefixes": [
        "RP"
      ],
      "id": "20260708-3001",
      "summary": null,
      "elibrary_search_url": "https://elibrary.ferc.gov/eLibrary/search?accession=20260708-3001",
      "first_file_format": "Standard",
      "first_file_size": 41608,
      "docket_numbers": [
        "RP26-930-000"
      ],
      "libraries": [
        "Gas"
      ],
      "avail_code": "P",
      "docket_search_keys": [
        "RP26-930-000",
        "RP26-930"
      ],
      "first_file_name": "RP26-930-000.docx",
      "first_file_id": "9A515593-7785-C1E8-9708-9F415E500000",
      "accession_number": "20260708-3001",
      "primary_library": "Gas",
      "family_value": "None",
      "recipients": [
        "NATURAL GAS PIPELINE COMPANY OF AMERICA LLC, * *"
      ],
      "scraped_at": "2026-07-08T18:51:14.319Z",
      "category": "Issuance",
      "posted_date": "2026-07-08",
      "authors": [
        "OFFICE OF ENERGY MARKET REGULATION, Palazzi M K"
      ]
    }
  ],
  "count": 1,
  "has_more": false
}

Example questions you can answer

All filings in a docket, newest first.
A utility's rate-case activity this year.
New pipeline certificate applications (CP dockets).
FERC issuances (orders/directives) vs submittals in a proceeding.

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