{
 "aliases": [
  {
   "note": "Curated from BPA's OPI Paths page, ATCID and Transmission Plan; WECC path number where one applies",
   "relation": "exact",
   "review_state": "reviewed",
   "source_entity_id": "montana-pacific-nw",
   "source_ref": "bpa-paths"
  }
 ],
 "bbox": [
  -114.35881370263353,
  46.159324589077286,
  -111.4722160663154,
  48.21639833078621
 ],
 "citation_path": "citations/path~bpa~montana-pacific-nw.html",
 "direction": "west to east positive (E-W TTC series negative; typical E-W flow reads negative)",
 "facts": [
  {
   "basis": "BPA's published TTC series for the path (mode over the 30-day OPI window) or the WECC path rating where BPA publishes none; a directional operating limit, not a sum of line ratings",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "path:bpa:montana-pacific-nw#path_ttc_mw",
   "label": "Total transfer capability",
   "locator": "bpa_paths.csv; path_id=montana-pacific-nw; source=https://www.wecc.org/sites/default/files/documents/progress_report/2026/2026%20Path%20Rating%20Catalog%20Public.pdf",
   "maturity": "final",
   "method": "curated",
   "metric": "path_ttc_mw",
   "missing_reason": null,
   "note": "BPA OPI TTC series 2026-08-18..09-17: E-W TTC mode 2,200 MW (range 1,506-2,200); WECC Path 8 accepted rating 2,200 MW E-W / 1,350 MW W-E",
   "period": {
    "as_of": "2026-09-18",
    "kind": "instant",
    "note": "Published limit on the review date; BPA's OPI TTC series varies by season and outage"
   },
   "precision": 0,
   "quality": "valid",
   "source_ref": "bpa-paths",
   "unit": "MW",
   "value": 2200.0
  }
 ],
 "geometry": {
  "from": "Broadview / Mill Creek / Ovando / Rattlesnake / Kerr (NWE Montana)",
  "mode": "lines",
  "note": "Drawn as the named BPA lines",
  "to": "Garrison / Hot Springs / Kalispell (BPA)"
 },
 "id": "path:bpa:montana-pacific-nw",
 "kind": "intertie",
 "kind_label": "Intertie",
 "lines": [
  {
   "id": "line:bpa:BRDV-GARR-1",
   "name": "Broadview-Garrison No 1",
   "type": "line",
   "voltage_class": "500",
   "voltage_kv": 500.0
  },
  {
   "id": "line:bpa:BRDV-GARR-2",
   "name": "Broadview-Garrison No 2",
   "type": "line",
   "voltage_class": "500",
   "voltage_kv": 500.0
  },
  {
   "id": "line:bpa:RTLS-GARR-1",
   "name": "Rattlesnake-Garrison No 1",
   "type": "line",
   "voltage_class": "230",
   "voltage_kv": 230.0
  },
  {
   "id": "line:bpa:KALI-KERR-1",
   "name": "Kalispell-Kerr No 1",
   "type": "line",
   "voltage_class": "115-161",
   "voltage_kv": 115.0
  }
 ],
 "live": {
  "note": "BPA publishes this path in its OPI CSV (15-minute); not yet collected live",
  "series": null,
  "source": null
 },
 "name": "Montana-Pacific NW",
 "note": "Partial: WECC Path 8 cut plane also has Mill Creek-Garrison 230, Mill Creek-Anaconda (BPA) 230, Ovando-Garrison 230, Placid Lake-Hot Springs 230, Rattlesnake-Dixon 230, Thompson Falls-Burke 115, Crow Creek-Burke 115 (none in BPA line file; BPA file has Garrison-Anaconda No 1 and Hot Springs-Rattlesnake No 1 which are not verified as the same circuits); BPA 2025 Transmission Plan 10.4 lists the Rattlesnake 230/161 kV transformer instead of Rattlesnake-Garrison; BPA monthly file 2012-01 labels PI 36920 'NWE-PNW' Montana cutplane; ATCID V88 rates the separate West of Garrison 1:1 path at the Path 8 rating A path is a metered cut plane; its TTC is a directional operating limit for the whole path, never a rating of any single line, and flow on it is not attributable to one line.",
 "release_id": "20260929T050546Z-51ae0f7d3c78",
 "schema_version": "1.41.0",
 "source": {
  "publisher": "WECC",
  "reviewed_on": "2026-09-18",
  "reviewer": "claude-1d5",
  "url": "https://www.wecc.org/sites/default/files/documents/progress_report/2026/2026%20Path%20Rating%20Catalog%20Public.pdf"
 },
 "source_name": null,
 "sources": [
  "bpa-lines",
  "bpa-paths"
 ],
 "type": "path",
 "updated_reason": null,
 "wecc_path": "Path 8"
}