generated: '2026-09-12'
method: probed
source: >-
  https://gas.genlp.com/GNP_PRD_IPWS/ — the FERC informational posting website Genesis
  Energy, L.P. operates for High Island Offshore System, L.L.C. (TSP 30020), plus the
  location dataset it serves anonymously.
note: >-
  Genesis Energy, L.P. publishes no OpenAPI, AsyncAPI, GraphQL SDL or any other developer
  contract, so none of the usual cross-cutting web-API conformances (oauth2, oidc,
  rfc9457, json:api, pagination, idempotency) can be asserted — there is no surface to
  assert them about. What the company DOES publish is a regulated, machine-readable
  bulk-data surface mandated by FERC, and that is what this file records.

conformance: []

domain_standard:
  market: Interstate natural gas transmission (US midstream)
  entries:
    - id: ferc-order-587-naesb-wgq-informational-postings
      label: FERC Order No. 587 / NAESB WGQ informational postings
      conforms: true
      confidence: high
      evidence:
        - url: https://gas.genlp.com/GNP_PRD_IPWS/?tspno=30020
          http_status: 200
          note: >-
            "HIGH ISLAND OFFSHORE SYSTEM LLC: Informational Posting Website" — the
            standard FERC informational-posting section set is present and linked from
            the landing page: Operationally Available Capacity, Unsubscribed Capacity,
            Index of Customers, Locations, Critical/Non-Critical Notices, Planned Service
            Outage, Request to Purchase Releasable Capacity, Posted Imbalances,
            Transactional Reporting (Firm / Interruptible / Capacity Release), Gas
            Quality, Standards of Conduct and the entire tariff.
        - url: >-
            https://gas.genlp.com/GNP_PRD_IPWS/IPWSFile/IPWSFileHandler?path=%5CTSP_30020%5C&fileName=Locations%2FLOCATIONDATA.CSV&d=True
          http_status: 200
          content_type: application/octet-stream
          bytes: 12491
          note: >-
            Anonymous, no-credential CSV download whose header row is the NAESB WGQ
            informational-postings location data element set, fetched verbatim on
            2026-09-12: "LOC NAME,LOC,LOC ST ABBREV,LOC STATE,LOC CNTY ABBREV,LOC
            COUNTY,LOC ZN ABBREV,LOC ZONE,LOC TYPE IND,LOC TYPE,DIR FLO,LOC STAT
            IND,EFF DATE,INACT DATE,UP/DN IND,UP/DN NAME,UP/DN ID,UP/DN ID PROP,UP/DN
            LOC NAME,UP/DN LOC,UP/DN FERC CID IND,UP/DN FERC CID,TSP NAME,TSP,TSP
            PROP,TSP FERC CID,UPDATE D/T". TSP and FERC CID identifiers are populated
            (TSP 30020, TSP FERC CID 87740031).
      caveat: >-
        This is a regulated posting obligation discharged as downloadable files and
        server-rendered HTML grids, NOT a developer API. There is no published request
        contract, no versioning, no authentication scheme and no support channel for
        programmatic consumers. Recorded because it is a real, first-party,
        machine-readable, anonymously-reachable surface in this company's market — not
        because it substitutes for an API.
    - id: naesb-wgq-edm
      label: NAESB WGQ Electronic Delivery Mechanism (EDM)
      conforms: unknown
      confidence: low
      evidence:
        - url: https://quorum.genlp.com/
          http_status: 404
          note: >-
            The IPWS links "Customer Activities" to quorum.genlp.com, the gated
            nomination / capacity-release system. The host is Cloudflare-fronted and
            returns an empty HTTP 404 for every path including the root, so no
            application entry point, no discovery document and no EDM endpoint could be
            observed anonymously. Whether Genesis operates a NAESB WGQ EDM interface
            behind it is NOT established here and is not asserted.

regime_note: >-
  The apis.io `energy_utilities` regulatory regime matched this provider via tags and its
  standards[] shortlist is retail/consumer-energy shaped (green-button, espi, cds-energy,
  cds-common, smart-energy-code, ieee-2030-5, openadr). None of those apply to an
  interstate natural gas transmission MLP. The binding US regime for this surface is FERC
  Order No. 587 with the NAESB WGQ standards it incorporates (the map currently names only
  FERC Order 889 / OASIS, which governs electric transmission). Recorded as an observation
  for rubric evolution; nothing here was stretched to fit the existing shortlist.