generated: '2026-07-27'
method: searched
source: >-
  https://www.pjm.com/glossary (PJM Glossary, HTTP 200, ~565 KB on 2026-07-27), PJM
  Data Miner API Guide (v15) Appendix A, PJM Data Miner FAQs, and the NAESB WEQ-003
  OASIS Data Dictionary referenced by PJM's OASIS API User Guide.
vocabularies:
- id: pjm-glossary
  name: PJM Glossary
  url: https://www.pjm.com/glossary
  status: 200
  scope: >-
    PJM's published, public definitions of the wholesale-market and grid-operations
    terms used across its tariff, manuals, tools and data feeds (LMP, pnode, zone,
    capacity, FTR, ARR, synchronized reserve, PAI, and so on).
  machine_readable: false
- id: pjm-data-miner-feed-names
  name: Data Miner feed long-name to short-name mapping
  url: https://www.pjm.com/-/media/DotCom/etools/data-miner-2/data-miner-2-api-guide.ashx
  scope: >-
    PJM's controlled list of Data Miner 2 feed short names — the API path segment for
    every feed (e.g. da_hrl_lmps, rt_fivemin_hrl_lmps, gen_by_fuel, hrl_load_metered).
    Captured in full at data-model/pjm-data-model.yml.
  machine_readable: false
  terms_count: 68
- id: pjm-data-miner-attributes
  name: Data Miner generic and feed-specific attribute vocabulary
  url: https://www.pjm.com/-/media/DotCom/etools/data-miner-2/data-miner-2-api-guide.ashx
  scope: >-
    Section III of the API Guide enumerates 42 date-time attribute names and, per
    feed, the allowed values for every filterable attribute (tie lines, zones,
    pnode subtypes, areas, reserve types). This is PJM's de facto data dictionary for
    the market-data API.
  machine_readable: false
- id: naesb-weq-003
  name: NAESB WEQ-003 OASIS Data Dictionary
  url: https://www.naesb.org/weq/default.asp
  scope: >-
    The industry data dictionary PJM's OASIS node conforms to, at versions 2.0, 2.1,
    2.2 and 3.3. Not a PJM publication — PJM asserts conformance to it. See
    conformance/pjm-conformance.yml.
  machine_readable: false
- id: pjm-edart-xml
  name: eDART XML document definitions
  url: https://www.pjm.com/pjmfiles/pub/etools/edart/xmldocs/xmldoc.html
  status: 200
  scope: >-
    PJM's public XML document definitions for the eDART browserless endpoints —
    transmission and generator outage tickets, voltage schedules and reliability
    data. Documentation is public even though the endpoints are participant-only.
  machine_readable: partial
  note: HTML documentation of XML documents; no XSD or JSON Schema is published.
- id: pjm-reserve-name-mapping
  name: Operational Reserves old-to-new reserve name mapping (2022-10-01)
  url: https://learn.pjm.com/three-priorities/keeping-the-lights-on/data-miner-faqs.aspx
  scope: >-
    PJM's published crosswalk of pre- and post-Reserve Price Formation reserve names
    (e.g. "RTO Operating Reserves" -> "RTO Operating (30 Min) Reserve Total"),
    plus the settlement-product mapping (Primary Reserve -> NSRMCP, Thirty Minutes
    Reserve -> SecRMCP, Synchronized Reserve -> SRMCP). Required to read the
    operational_reserves feed across the 2022 boundary.
  machine_readable: false
note: >-
  PJM publishes no RDF, SKOS, JSON-LD or OWL vocabulary and no machine-readable
  glossary export. Every vocabulary above is human-readable HTML or PDF; they are
  indexed here rather than transcribed, except the feed-name list which is captured
  verbatim in data-model/pjm-data-model.yml.