Map of major Western North American power transmission paths
A line on Path 65, part of the Pacific DC Intertie.

The Western Electricity Coordinating Council (WECC) coordinates a number of high voltage power links in western North America.[1][2][3] These links, known as WECC Intertie Paths, are not necessarily single transmission line, rather they are interties between various areas. These areas can be quite distant, such as Path 65 between The Dalles, Oregon and Los Angeles, California or short such as Path 62 between Southern California Edison's Eldorado and LADWP's McCullough substations. These are currently numbered from 1 to 81, with a few numbers intentionally omitted.

Table of paths

Since the interties may consist of multiple power-lines, the maximum voltage used is shown in the table below. Some of the links such as Path 65, the Pacific DC Intertie, do consist of a single transmission line, so the maximum voltage is the voltage used.

Path # Name Path rating transfer limit (MW) Normal power flow

direction

Max voltage (kV)
E to W (N to S)[4]W to E (S to N)
Path 1Alberta to BC10001200W to E500
Path 2Alberta to Saskatchewan150150E to WDC/DC
Path 3Northwest to British Columbia31503000S to N500
Path 4West of Cascades - North10700E to W500
Path 5West of Cascades - South7200E to W500
Path 6West of Hatwai4277E to W500
Path 8Montana to Northwest22001350E to W500
Path 9West of Broadview2753Not DefinedE to W500
Path 10West of Colstrip2598Not DefinedE to W500
Path 11West of Crossover2598Not DefinedE to W500
Path 14Idaho to Northwest24001200E to W500
Path 15Midway - Los Banos2000-3265[5]4800-5400[5]N to S500
Path 16Idaho - Sierra500360345
Path 17Borah West25571600Not Defined345
Path 18Montana to Idaho383256N to S230
Path 19Bridger West24001250E to W345
Path 20Path C16001250S to N345
Path 22Southwest of Four Corners2325Not DefinedE to W500
Path 23Four Corners TransformerN/AN/AN/A500
Path 24PG&E - Sierra160150115
Path 25PacificCorp/PG&E 115 kV150115
Path 26Northern-Southern California40003000500
Path 27IPP DC Line24001400N to S500
Path 28Intermountain - Mona 345 kV1200345
Path 29Intermountain - Gonder 230 KV200241Not DefinedE to W230
Path 30TOT 1A650Not DefinedE to W345
Path 31TOT 2A690Not DefinedN to S345
Path 32Pavant Intr-mtn - Gonder 230 KV500235E to W230
Path 33Bonanza West785Not DefinedE to W345
Path 34TOT 2B see Paths 78 and 79780850N to S
Path 35TOT 2C600580NE to SW345
Path 36TOT 31680Not DefinedN to S345
Path 37See Path 85
Path 38TOT 4B880230
Path 39TOT 5345
Path 40TOT 7890230
Path 41Sylmar to SCE16001600230
Path 42IID - SCE750Not Defined230
Path 43North of San Onofre
Path 44South of San Onofre
Path 45SDG&E - CFE408800S to N
Path 46West of Colorado River (WOR)1120011200Not Defined500
Path 47Southern New Mexico (NM1)1048Not DefinedN to S345
Path 48Northern New Mexico (NM2)21502150NW to SE345
Path 49East of Colorado River (EOR)10100Not DefinedE to W500
Path 50Cholla Pinnacle Peak1200Not DefinedNE to SW345
Path 51Southern Navajo2800Not DefinedN to S500
Path 52Silver Peak - Control 55 KV171755
Path 54Coronado West1494500
Path 55Brownlee East1915230
Path 58Eldorado - Mead 230 kV11401140230
Path 59WALC Blythe, SCE Blythe218Not Rated161
Path 60Inyo - Control 115 KV Tie5656115
Path 61Lugo - Victorville 500 KV Line2400900N to S500
Path 62Eldorado - McCullough 500 kV25982598500
Path 64Marketplace - Adelanto line 500 kV500
Path 65Pacific DC Intertie (PDCI)32203100N to S500
Path 66California Oregon Intertie48003675N to S500
Path 71South of Allston1170500
Path 73North of John DayNot Defined
Path 75Hemingway - Summer Lake1500400E to W500
Path 76Alturas Project300345
Path 77Crystal - Allen300500
Path 78TOT 2B1700345
Path 79TOT 2B2265300230
Path 80Montana Southeast600600230
Path 81Centennial3790500
Path 82TOT B East2465Not Rated500
Path 83Montana/Alberta Tie Line300230
Path 84Harry Allen-Eldorado 500 kv1390500
Path 85Aeolus West1816500
Path 86West of John Day4760Not Rated500
Path 87West of McNary4925Not Rated500
Path 88West of Slatt4760Not Rated500
Path 89Southern Nevada Transmission Interface Plus62574681500

References

  1. "WECC PATH MAP" (PDF). WECC. Retrieved 6 May 2012.
  2. "WECC Path Reports" (PDF). WECC. Retrieved 6 May 2012.
  3. https://www.wecc.biz/Reliability/TAS_PathReports_Combined_FINAL.pdf
  4. "2022 Path Rating Catalog Public.PDF".
  5. 1 2 http://www.caiso.com/Documents/FinalStudyScopeforTransfersbetweenPacificNorthwestandCalifornia.pdf#page=13
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