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For more information Tri-State webpage: www.tristategt.org click Operations then Transmission Planning (http://www.tristategt.org/transmissionplanning/puc3627_trans missionprojects.cfm) Email: (transmissionplanning@tristategt.org) CCPG (for Colorado projects): (http://regplanning.westconnect.com/ccpg_stakeholder_opport unities.htm) 2
This Meeting Tri-State is committed to an open and transparent transmission planning process and welcomes meaningful input from all stakeholders. These efforts may be supplemented by additional stakeholder outreach activities in connection with individual transmission projects or overall programmatic needs, as necessary. Colorado Coordinated Planning Group (CCPG) Voluntary, open transmission planning forum. Membership is open to all interested stakeholders. Includes all Colorado transmission utilities http://regplanning.westconnect.com/ccpg.htm 3
Who is Tri-State? Founded in 1952, Tri-State is a not-for-profit, wholesale power supplier owned by 43 electric cooperatives and public power districts serving a population of approximately 1.4 million people. Tri-State's mission is to provide our member systems a reliable, cost-based supply of electricity in accordance with cooperative principles. 4
Transmission System 5
Statistics Approximately 5,500 miles of transmission in which Tri- State has an ownership or capacity interest: 1220 miles - 345 kv 1001 miles - 230 kv 184 miles - 138 kv 2942 miles - 115 kv 49 miles - 69 kv Over 220 Transmission Substations TS 2016 Peak (July 10 th ) = 2,802 MW 6
Planning Considerations Tri-State endeavors to conduct transmission planning with the goal of achieving best-cost solutions that balance numerous factors and result in optimal transmission projects: Load projections Project partnership opportunities Regional congestion Transportation corridors Transmission corridors City and county zoning Geographic features Societal and environmental impacts Operational and maintenance requirements Consistency with short term and long term planning opportunities Initial construction cost 7
Project Status Developing Some objectives and needs have been identified. Some alternatives have or are being considered, but stakeholder propose alternatives are also requested. Planned Objectives and needs are clear. Alternative(s) has been decided. Project drivers have sufficient certainty. Conceptual Objectives and needs are clear. Alternative(s) has been decided. Project drivers have less certainty than planned projects. Under-Construction Board approved project. Project has started accruing costs due to design, routing, permitting, regulatory activities, or actual construction. In-Service Cancelled 8
Projects: Wyoming 9
Badwater Sawmill Creek 230kV Line Casper 10
Badwater Sawmill Creek 230kV Line Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct new 230 kv line from the existing Badwater Substation to the planned Sawmill Creek Substation. 230 kv 117 miles Line. Planned. 2022 Load Serving. 11
Southeast Wyoming Transmission Project Casper 12
Southeast Wyoming Transmission Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Sectionalize Dave Johnston Laramie River Station 230kV at the new Sawmill Creek substation; Build a new Hammond substation near the existing Belle Fourche substation; Construct new 115 kv line from Sawmill Creek Substation to Hammond Substation. 115 kv 50 miles Line and Substation. Under Construction. 2018 Reliability; Load Serving. 13
Wayne Child Phase II Cheyenne 14
Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Wayne Child Phase II Sectionalize Laramie River Station (LRS) Story 345kV line at the existing Wayne Child substation. 345 kv 0 miles Substation. Under Construction. 2019 Load Serving, increased transfer capabilities. 15
Wind River 115kV Reliability Upgrade Project Casper 16
Wind River 115kV Reliability Upgrade Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct a new 115kV line from the existing Wind River Tap to the existing Wyopo Substation. 115 kv 17 miles Line. Planned. 2022 Reliability. 17
Projects: Colorado 18
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Burlington (TS) Burlington (KC) 115 kv Craig Burlington Montrose Lamar Pueblo 20
Burlington (TS) Burlington (KC) 115 kv Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Rebuild with 795 ACSR. 115 kv 1.94 miles Line. Developing. 2018 Accommodate distribution system load shifting. 21
Burlington Lamar 230 kv Transmission Project Craig Burlington Montrose Lamar Pueblo 22
Burlington Lamar 230 kv Transmission Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct a 230 kv transmission line from Burlington to Lamar. 230 kv 107 miles Line. Under Construction. 2020 Reliability, improve load-serving capability, remove generation operating restrictions, and support renewable resource development in eastern Colorado. 23
Big Sandy - Calhan Craig Burlington Montrose Lamar Pueblo 24
Big Sandy - Calhan Description: Voltage: Length: Type: Status: Planned ISD: Purpose: New 230 kv line between Big Sandy and Calhan Substations. 230 kv 55 miles Line. Planned. 2022 Support Member load around Colorado Springs. 25
Boone Walsenburg 230 kv Line Craig Burlington Montrose Lamar Pueblo 26
Boone Walsenburg 230 kv Line Description: Construct a 230 kv transmission line from Boone Substation to Walsenburg Substation. Voltage: 230 kv Length: 69 miles Type: Line. Status: Conceptual. Planned ISD: To be determined Purpose: Reliability eliminate the need for the existing Walsenburg Remedial Action Scheme (RAS). 27
Burlington Wray 230 kv Line Craig Burlington Montrose Lamar Pueblo 28
Burlington Wray 230 kv Line Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct new 230 kv line from the existing Burlington Substation to the existing Wray Substation. 230 kv 72 miles Line. In-Service. 2016 Improve load-serving capability, remove generation operating restrictions and support renewable resource development in eastern Colorado. 29
Falcon Paddock Calhan 115 kv Craig Burlington Montrose Lamar Pueblo 30
Falcon Paddock Calhan 115 kv Description: Voltage: Length: Type: Status: Planned ISD: Purpose: New 115 kv and 69 kv rebuilds to 115 kv. 115 kv 25 miles Line. Developing. 2024 Accommodate increased loads and improve reliability. FALCON 31
Falcon Midway 115 kv Line Uprate Project Craig Burlington Montrose Lamar Pueblo 32
Falcon Midway 115 kv Line Uprate Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Planned uprate of existing 115 kv line between Falcon and Midway. 115 kv 27 miles Distribution. Planned. 2024 Increase conductor thermal rating. 33
Lamar Boone 230 kv Line Craig Burlington Montrose Lamar Pueblo 34
Lamar Boone 230 kv Line Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct a 230 kv transmission line from Boone Substation to Lamar Substation. 230 kv 100 miles Line. Conceptual. To be determined Accommodate potential increased resource injection at Lamar. Subset of Lamar Front Range. 35
Lamar Front Range Project Craig Burlington Montrose Lamar Pueblo 36
Lamar Front Range Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Two high voltage transmission paths from Lamar Substation to Pueblo area and a second path from Lamar to substations near Brush and/or Deer Trail. 345 kv 300 350 miles Line. Conceptual. To be determined. Tri-State reliability, system load-serving connectivity as regional power provider and future resources. Xcel Senate Bill07-100 and reliability. 37
Lost Canyon Main Switch 115 kv Project Craig Burlington Montrose Lamar Pueblo 38
Lost Canyon Main Switch 115 kv Description: Voltage: Length: Type: Status: Planned ISD: Purpose: New transmission line between Lost Canyon and Main Switch. 115kV 20 miles Line. Planned. 2022 Increase load serving capability. 39
Pueblo West Tap Line Uprate Craig Burlington Montrose Lamar Pueblo 40
Pueblo West Tap Line Uprate Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Upgrade existing 115 kv line conductor. 115 kv 0.3 miles Line. In-Service. 2016 Reliability, eliminate overloading of existing line for NERC Category B contingency. 41
San Juan Basin Energy Connect Project Craig Burlington Montrose Lamar Pueblo 42
San Juan Basin Energy Connect Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: New 230 kv transmission line between existing WAPA Shiprock Substation in New Mexico to a new 230 kv Iron Horse Substation. New 230 kv Kiffen Canyon Substation will also be required. 230 kv 70 miles Line. Conceptual. To be determined. Reliability for loss of Hesperus 345 kv source and to serve approximately 100 MW of new industrial load in SW Colorado. 43
San Luis Valley Poncha 230 kv Project Craig Burlington Montrose Lamar Pueblo 44
San Luis Valley Poncha 230 kv Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct approximately 60 mile 230 kv transmission line from the San Luis Valley to Poncha 230 kv. 230 kv 60 miles Line. Planned. 2022 Reliability. 45
Southwest Weld Expansion Project Craig Burlington Montrose Lamar Pueblo 46
Southwest Weld Expansion Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct approximately 49 aggregated miles of 115 kv and 230 kv transmission lines with six potential load-serving substations and/or line taps. 115/230 kv 49 miles Line Under Construction. 2021 Load Serving. 47
Sunshine Telluride 115 kv Craig Burlington Montrose Lamar Pueblo 48
Sunshine Telluride 69 kv to 115 kv Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Remove 115/69 transformer at Sunshine. Operate Sunshine Telluride at 115 kv. 115 kv 5 miles Line. Developing. 2018 Additional space at Sunshine for 115/24.9 kv mobile and increased load serving at Telluride. 49
Western Colorado Transmission Upgrade Project Craig Burlington Montrose Lamar Pueblo 50
Western Colorado Transmission Upgrade Project Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Upgrade existing transmission line and facilities from Montrose Substation to Cahone Substation from 115 kv operation to 230 kv. 230 kv 80 miles Line Under Construction. 2019 Reliability eliminate need for existing Nucla Remedial Action Scheme and replace failing structures. Load serving. 51
Projects: New Mexico 52
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Escalante Gallup 115kV Line Uprate 54
Escalante Gallup 115kV Line Uprate Description: Uprate existing 115 kv line to 100ºC. Voltage: Length: Type: Status: Planned ISD: Purpose: 115 kv 42 miles Line. Under Construction. 2017 Reliability. 55
NENM Transmission Improvements Phase I 56
NENM Transmission Improvements Phase I Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Construct a second 115kV line from the existing Springer Substation to the existing Gladstone Substation. 115 kv 32 miles Line. Planned. 2022 Reliability; Load Serving. 57
NENM Transmission Improvements Phase II 58
NENM Transmission Improvements Phase II Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Sectionalize Gladstone Bravo Dome West (Hess) at the new Antelope Springs Substation; Sectionalize Clapham Bravo Dome 115kV at the new Mosquero Substation; Construct a new 115kV line from the planned Antelope Springs Substation to the planned Mosquero Substation; Convert Gladstone Antelope Springs 115kV to 230kV. 115 kv 29 miles Line. Planned. 2022 Reliability; Load Serving. 59
Torreon Project 60
Description: Voltage: Length: Type: Status: Planned ISD: Purpose: Torreon Project Sectionalize La Jara San Ysidro 115kV line to source the new Torreon substation. 115 kv 2 miles Line and Substation. Under Construction. 2017 Load Serving. 61
For more information Tri-State webpage: www.tristategt.org click Operations then Transmission Planning (http://www.tristategt.org/transmissionplanning/puc3627_trans missionprojects.cfm) Email: (transmissionplanning@tristategt.org) CCPG (for Colorado projects): (http://regplanning.westconnect.com/ccpg_stakeholder_opport unities.htm)
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