WestConnect plans $13.3 billion in transmission projects over 10 years

WestConnect stakeholders over the next 10 years are planning 183 transmission projects in nine western states that represent a capital investment of at least $13.3 billion, according to the 2015 WestConnect annual 10-year transmission plan released on Feb. 2.

Those planned transmission line projects have a combined total length of 5,334 miles and include work on 75 transmission lines, 39 substations and 28 transformers, according to the plan. In addition, there are 75 conceptual transmission projects in the plan with a total combined length of 6,920 miles and representing a capital investment of at least $12.1 billion.

Capital investment data was not provided for 18 percent of the planned projects and for 25.3 percent of the conceptual projects, according to TransmissionHub.

WestConnect’s 2015 plan is the eighth regional transmission plan coordinated and produced on behalf of WestConnect subregional planning participants and stakeholders, and encompasses three subregional planning areas that cover all or parts of South Dakota, Nebraska, Montana, Wyoming, Colorado, New Mexico, Arizona, Nevada and California. The plan is scheduled for approval at the Feb. 19 WestConnect Annual Planning Meeting.

According to the plan:

·      In Arizona, there are 66 planned projects with 55 line miles and an investment of $722 million

·      In California, there are 21 planned projects with 815 line miles and an investment of $3.2 billion

·      In Colorado, there are 26 planned projects with 386 line miles and an investment of $532 million

·      In Nevada, there are 21 planned projects with 23 line miles and an investment of $248 million

·      In New Mexico, there are 15 planned projects with 107 line miles and an investment of $131 million

·      In Texas, there are 12 planned projects with 14 line miles and an investment of $34 million

·      In Wyoming, there are six planned projects with 217 line miles and an investment of $108 million

These 49 new planned projects and one new conceptual project were included in the plan, but not in the 2014 WestConnect 10-year plan:

·      Colorado Springs Utilities’ 14-mile, $1.5m, 230-kV Kelker-Front Range Transmission Line

·      Tri-State Generation and Transmission Association’s 16-mile, $37.5m, 230-kV Keota to East Pony Project

·      Platte River Power Authority’s $8 million, 230-kV Laporte Expansion Project

·      Xcel Energy’s three-mile, $2.9 million, 115-kV Beaver Creek to Brush Transmission Reconductoring Project

·      Xcel Energy’s $2.5m, 115-kV Palmer Lake Series Reactor Project

·      Xcel Energy’s 18-mile, $17.1 million, 230-kV Wheeler to Wolf Ranch Transmission Project

·      Xcel Energy’s $1.6 million, 230-kV Moon Gulch Distribution Station Project

·      NV Energy’s 11-mile, $31 million, 115-kV California to Bordertown Transmission Line Project

·      NV Energy’s 2.4-mile, $1 million, 115-kV Emerson to Carson Transmission Line Upgrade

·      NV Energy’s $8 million, 345-kV Falcon Transformer Addition

·      NV Energy’s $40 million, 120-kV and 345-kV Carlin Trend Reinforcement (length undetermined)

·      NV Energy’s $4 million, 345-kV Carlin Trend Separation Scheme

·      NV Energy’s $33 million, 500-kV, alternating current Harry Allen Transformer Project

·      NV Energy’s $17 million, 230-kV Winterwood Transformer Project

·      NV Energy’s $17 million, 230-kV Iron Mountain-Third Transformer Project

·      NV Energy’s 4.5-mile, $1.6 million, 138-kV Arden to Haven Transmission Line Upgrade Project

·      NV Energy’s two-mile, $800,000, 138-kV Burnham to Pebble Transmission Line Upgrade Project

·      NV Energy’s $9 million, 230-kV Beltway-Second XFMR Installation Project

·      NV Energy’s $12 million, 230-kV Equestrian-Second XFMR Installation Project

·      NV Energy’s $25m, 230-kV Pecos XFMR #1 and #2 Replacement Project

·      NV Energy’s four-mile, $900,000, 138-kV Pecos to Craig Transmission Line Upgrade

·      NV Energy’s three-mile, $1.1 million, 138-kV Pecos to Michael Way Transmission Line Fold into Miller 138-kV

·      NV Energy’s $2 million, 138-kV Tropical 24 MVAR Capacitor Project

·      NV Energy’s $2 million, 138-kV Sinatra 24 MVAR Capacitor Project

·      NV Energy’s $30 million, 230-kV Pecos to Brooks Transmission Line Project (length undetermined)

·      NV Energy’s eight-mile, $17 million, 138-kV Northwest to El Capitan Transmission Line Upgrade Project

·      NV Energy’s $17 million, 230-kV Decatur to Arden Transmission Line Fold into McDonald

·      Western Area Power Administration’s 230-kV Keswick to Airport to Cottonwood Reconductoring Project (cost and length undetermined)

·      Western’s 230-kV Olinda to Cottonwood #1 and #2 Reconductoring Project (cost and length undetermined)

·      Southwest Transmission Cooperative’s (SCT) $346,000, 115-kV Three Points Substation Capacitor Bank Project

·      SCT’s $362,000, 230-kV San Rafael Substation Capacitor Bank Project

·      SCT’s $480,000, 115-kV Bicknell Substation Capacitor Bank Project

·      Arizona Public Service’s (APS) 230-kV Ocotillo Generation Interconnections (cost and length undetermined)

·      Western’s $12 million, 161-kV Gila Substation Rebuild

·      Salt River Project’s (SRP) 16-mile, 230-kV Browning to Rogers Transmission Line (cost undetermined)

·      SRP’s 500-kV, direct current Hassayampa to Pinal West #1 Jojoba Line Loop Project (cost and length undetermined)

·      SRP’s 13-mile, 230-kV Browning to Corbel Transmission Line Reconfiguration (cost undetermined)

·      Imperial Irrigation District’s (IID) $8.3 million, 161-kV Niland Substation Transformer Replacement Project

·      IID’s $7.5m, 161-kV El Centro Switching Station Transformer Replacement Project

·      IID’s 90-mile, 500-kV, alternating current North Gila to Imperial Valley Transmission Line Project (cost undetermined)

·      IID’s seven-mile, $4.8 million, 230-kV, Imperial Valley to Dixieland Transmission Line Project – Phase Two

·      Tucson Electric Power’s (TEP) $6.8 million, 345-kV Greenlee Substation Project

·      TEP’s 138-kV Green Valley to Toro Transmission Line Uprate Project (cost and length undetermined)

·      TEP’s 138-kV Hartt to Toro Reconductoring Project (cost and length undetermined)

·      TEP’s seven-mile, $1.8 million, 138-kV Del Cerro to Tucson Transmission Line Reconductoring Project

·      TEP’s four-mile, $1.5m, 138-kV Irvington to 22nd Transmission Line Reconductoring Project

·      TEP’s 345-kV South Loop Substation Project (cost undetermined)

·      TEP’s 345-kV Greenlee Substation Project (cost undetermined)

·      NV Energy’s 17-mile, $36 million, 345-kV Mira Loma to North Valley Road Transmission Line (conceptual)

These 12 transmission lines were reported in the plan as being in service since the 2014 plan was developed:

·      Black Hills Energy’s five-mile, 115-kV Pueblo to Hyde Park to West Station ($2.7 million, according to the 2014 plan)

·      Black Hills Energy’s one-mile, 115-kV Happy Jack to North Range ($900,000, according to the 2014 plan)

·      Black Hills Energy’s nine-mile, 115-kV Corlett to South Cheyenne Transmission Line ($4.3 million, according to the 2014 plan)

·      Xcel Energy’s four-mile, 115-kV Eldorado to Plainview Transmission Line ($3 million, according to the 2014 plan)

·      Xcel Energy’s 1.5-mile, 115-kV Montfort to DCP Midstream Transmission Line ($200,000, according to the 2014 plan)

·      NV Energy’s 231-mile, 500-kV, alternating current Robinson to Harry Allen Transmission Line ($522 million, according to the 2014 plan)

·      SRP’s 21-mile, 230-kV Desert Basin to Pinal Central Transmission Line ($42 million, according to the 2014 plan)

·      SRP’s six-mile, 230-kV Pinal Central to Randolph Transmission Line ($9.8 million, according to the 2014 plan)

·      SRP’s 30-mile, 500-kV, alternating current Pinal West to Pinal Central Transmission Line ($49 million, according to the 2014 plan)

·      SRP’s 70-mile, 500-kV, alternating current Pinal Central to Abel Transmission Line ($127 million, according to the 2014 plan)

·      TEP’s 56-mile, 138-kV Vail to Valencia Transmission Line ($43 million, according to the 2014 plan)

·      TEP’s two-mile, 138-kV DeMoss Petrie to Tucson Transmission Line ($9 million, according to the 2014 plan)

These 17 transmission lines were reported in the plan as being under construction:

·      Black Hills Energy’s nine-mile, $14 million, 115-kV Boone to Nyber Project

·      Black Hills Energy’s 13-mile, $3.3 million, 115-kV North Range to Cheyenne South Project

·      Xcel Energy’s 10-mile, $7.1 million, 230-kV Cherokee to Ridge Upgrade Project

·      Tri-State’s 72-mile, $51 million, 230-kV Burlington to Wray Project

·      Tri-State’s 80-mile, $92 million, 230-kV Montrose to Cahone Conversion Project

·      Tri-State’s seven-mile, $13 million, 230-kV JM Shafer to Henry Lake Project

·      Tri-State’s 26-mile, $62 million, 345-kV Keota Project

·      Tri-State’s 49-mile, $112 million, 230-kV Southwest Weld Expansion Project

·      Tri-State’s 70-mile, $113 million, 230-kV San Juan Basin Energy Connect Project

·      Western’s 94-mile, $34 million, 115-kV Lovell to Yellowtail Rebuild Project

·      APS’ 12-mile, $28 million, 230-kV, Palm Valley to Trilby Wash Project

·      APS’ 110-mile, $187 million, 500-kV, alternating current Hassayampa to North Gila Project

·      APS’ 15-mile, $60 million, 500-kV, alternating current Delaney to Palo Verde Project

·      IID’s 20-mile, $26 million, 230-kV Path 42 Reconductoring Project

·      Western’s nine-mile, $11 million, 115-kV ED2 to ED4 Project

·      Western’s 14-mile, $18 million, 161-kV Parker to Headgate Rock Project

·      Western’s 109-mile, $25 million, 230-kV ED5 to Palo Verde Hub Project

These seven transmission lines, which were listed in the 2014 plan, were reported as withdrawn in the 2015 plan:

·      SRP’s 500-kV Northeast Arizona to Phoenix Project (cost and length undetermined, according to the 2014 plan)

·      SRP’s 38-mile, 230-kV Silver King to Browning Project (cost undetermined, according to the 2014 plan)

·      SRP’s 230-kV Pinnacle Peak to Brandow Project (cost and length undetermined, according to the 2014 plan)

·      SRP’s 230-kV Kyrene to Knox Project (cost and length undetermined, according to the 2014 plan)

·      STC’s 0.2-mile, 115-kV Saguaro to Rattlesnake Project (cost undetermined, according to the 2014 plan)

·      STC’s 115-kV Apache to San Manuel Project (a five-mile, $6.7 million project, according to the 2014 plan)

·      Western’s 161-kV Headgate to Blythe Project (a 52-mile, $55m project, according to the 2014 plan)

The 2014 WestConnect 10-year plan for the region had 199 planned transmission projects with an estimated total capital investment of more than $14.5 billion. In addition, in last year’s plan, there were 66 total conceptual projects with an estimated total capital investment of over $12.1 billion.

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