{
 "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": "west-of-hatwai",
   "source_ref": "bpa-paths"
  }
 ],
 "bbox": [
  -119.0186321495514,
  46.353181452819996,
  -116.91143715585875,
  47.96422253875399
 ],
 "citation_path": "citations/path~bpa~west-of-hatwai.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:west-of-hatwai#path_ttc_mw",
   "label": "Total transfer capability",
   "locator": "bpa_paths.csv; path_id=west-of-hatwai; source=https://www.bpa.gov/-/media/Aep/transmission/atc-methodology/ATCID_V88_11FEB2026.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 4,275 MW (range 2,500-4,275); WECC Path 6 accepted rating 4,277 MW E-W, W-E not defined",
   "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": 4275.0
  }
 ],
 "geometry": {
  "from": "Hatwai / Bell / Westside / North Lewiston (east)",
  "mode": "lines",
  "note": "Drawn as the named BPA lines",
  "to": "Lower Granite / Grand Coulee / Creston / Tucannon River (west)"
 },
 "id": "path:bpa:west-of-hatwai",
 "kind": "flowgate",
 "kind_label": "Flowgate",
 "lines": [
  {
   "id": "line:bpa:GCOU-BELL-6",
   "name": "Grand Coulee-Bell No 6",
   "type": "line",
   "voltage_class": "500",
   "voltage_kv": 500.0
  },
  {
   "id": "line:bpa:LOGT-HTWA-1",
   "name": "Lower Granite-Hatwai No 1",
   "type": "line",
   "voltage_class": "500",
   "voltage_kv": 500.0
  },
  {
   "id": "line:bpa:GCOU-BELL-3",
   "name": "Grand Coulee-Bell No 3",
   "type": "line",
   "voltage_class": "230",
   "voltage_kv": 230.0
  },
  {
   "id": "line:bpa:GCOU-BELL-5",
   "name": "Grand Coulee-Bell No 5",
   "type": "line",
   "voltage_class": "230",
   "voltage_kv": 230.0
  },
  {
   "id": "line:bpa:GCOU-WSID-1",
   "name": "Grand Coulee-Westside AVA No 1",
   "type": "line",
   "voltage_class": "230",
   "voltage_kv": 230.0
  },
  {
   "id": "line:bpa:CRES-BELL-1",
   "name": "Creston-Bell No 1",
   "type": "line",
   "voltage_class": "115-161",
   "voltage_kv": 115.0
  },
  {
   "id": "line:bpa:TUCR-NLEW-1",
   "name": "Tucannon River-North Lewiston 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": "West of Hatwai",
 "note": "Partial: ATCID V88 also lists Dry Creek-Talbot 230 (AVA/PAC), Devils Gap-Stratford 115, Lind-Warden 115, Dry Gulch-Pomeroy 69 (WECC/2025 Transmission Plan 9.9 list Harrington-Odessa 115, Lind-Roxboro 115, Dry Gulch 115/69 instead) - none in BPA line file (file has only the tap segment Odessa Tap to Devils Gap-Stratford); Tucannon River-North Lewiston terminates at Avista North Lewiston; OASIS path WOH_E>W; PI 43523 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": "BPA Transmission Services",
  "reviewed_on": "2026-09-18",
  "reviewer": "claude-1d5",
  "url": "https://www.bpa.gov/-/media/Aep/transmission/atc-methodology/ATCID_V88_11FEB2026.pdf"
 },
 "source_name": null,
 "sources": [
  "bpa-lines",
  "bpa-paths"
 ],
 "type": "path",
 "updated_reason": null,
 "wecc_path": "Path 6"
}