WECC Intertie Paths

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 61 between Lugo and Victorville, California, United States. These are currently numbered from 1 to 81, with a few numbers intentionally left out.

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

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)W to E (S to N)
Path 1Alberta to BC10001200W to E500
Path 2Alberta to Saskatchewan150150E to WDC/DC
Path 3Northwest to British Columbia31502000S to N500
Path 4West of Cascades - North10200E to W
Path 5West of Cascades - South7000E to W
Path 6West of Hatwai4250E to W
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[4]4800-5400[4]N to S500
Path 16Idaho - Sierra
Path 17Borah West2557Not DefinedE to W345
Path 18Montana to Idaho337256N to S230
Path 19Bridger West2200Not DefinedE to W345
Path 20Path C10001000S to N345
Path 22Southwest of Four Corners2325Not DefinedE to W500
Path 23Four Corners TransformerN/AN/AN/A500
Path 24PG&E - Sierra
Path 25PacificCorp/PG&E 115 kV
Path 26Northern-Southern California40003000
Path 27IPP DC Line24001400N to S500
Path 28Intermountain - Mona 345 kV
Path 29Intermountain - Gonder 230 KV200Not DefinedE to W230
Path 30TOT 1A650Not DefinedE to W345
Path 31TOT 2A690Not DefinedN to S345
Path 32Pavant Intr-mtn - Gonder 230 KV440235E to W230
Path 33Bonanza West785Not DefinedE to W345
Path 34TOT 2B see Paths 78 and 79780850N to S
Path 35TOT 2C600600NE to SW345
Path 36TOT 31605Not DefinedN to S345
Path 37TOT 4A
Path 38TOT 4B
Path 39TOT 5
Path 40TOT 7
Path 41Sylmar to SCE
Path 42IID - SCE600Not Defined230
Path 43North of San Onofre
Path 44South of San Onofre
Path 45SDG&E - CFE408800S to N
Path 46West of Colorado River (WOR)10623Not DefinedE to W500
Path 47Southern New Mexico (NM1)1048Not DefinedN to S345
Path 48Northern New Mexico (NM2)1970Not DefinedNW to SE
Path 49East of Colorado River (EOR)9300Not DefinedE to W500
Path 50Cholla Pinnacle Peak1200Not DefinedNE to SW345
Path 51Southern Navajo2800Not DefinedN to S500
Path 52Silver Peak - Control 55 KV171755
Path 54Coronado West
Path 55Brownlee East
Path 58Eldorado - Mead 230 kV
Path 59WALC Blythe, SCE Blythe
Path 60Inyo - Control 115 KV Tie5656115
Path 61Lugo - Victorville 500 KV Line2400900N to S500
Path 62Eldorado - McCullough 500 kV
Path 64Marketplace - Adelanto line 500 kV500
Path 65Pacific DC Intertie (PDCI)31003100N to S500
Path 66California Oregon Intertie48003675N to S500
Path 71South of Allston
Path 73North of John DayNot Defined
Path 75Hemingway - Summer Lake1500400E to W500
Path 76Alturas Project
Path 77Crystal - Allen
Path 78TOT 2B1530600345
Path 79TOT 2B2265300
Path 80Montana Southeast600600230
Path 81Centennial

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. http://www.caiso.com/Documents/FinalStudyScopeforTransfersbetweenPacificNorthwestandCalifornia.pdf#page=13
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