Colorado Transmission Planning Stakeholder Outreach Meeting - - PowerPoint PPT Presentation

Colorado Transmission Planning Stakeholder Outreach Meeting 4.11.2013

Agenda

 Welcome and Administrative Matters

 Webcast Instructions  Transmission Planning Website Information  Introductions  Purpose of Meeting

 Updates to previously discussed projects  Updates to Tri-State's 2014 Ten Year Transmission Plan

projects (new projects)

 Questions

Introduction and Purpose

• Continuation of Tri-State’s efforts to coordinate the planning

for additional electric transmission in Colorado.

• The best transmission planning is done on a comprehensive,

transparent, state-wide basis and takes into account the needs

• f all stakeholders.
• 2nd of 4 annual meetings in connection with development of

2014 Ten Year Plan.

• Purpose: Update projects discussed at previous meetings,

review stakeholder comments to date, and introduce new planned transmission projects.

Tri-State Transmission Planning Objectives

• Ensure reliable transmission service to meet the needs of Tri-State's Network Customers
• Provide reliable point-to-point transmission service in support of Tri-State's obligations

to its transmission customers

• Ensure the present and future reliability of Tri-State's interconnected transmission system
• Anticipate and plan for load growth among Tri-State's Member Systems and other entities

served by or from Tri-State's transmission system

• Coordinate transmission improvements, additions, and interconnections with

neighboring Transmission Providers (TPs) to ensure there are no negative impacts, no duplication of facilities, and to meet the needs of other TPs and stakeholders when possible

• Provide a meaningful opportunity for stakeholders to provide input into the planning

process to promote efficient utilization and development of the transmission system

Project Updates

• Big Sandy-Calhan 230 kV Project
• ISD: 2018 -> 2019
• Falcon-Midway 115 kV Line Uprate Project
• ISD: 2016 -> 2017
• Pueblo West Line Uprate
• Status: Planned -> In Development
• Montrose – Nucla – Cahone Transmission Upgrade

(Western Colorado Transmission Upgrade Project)

• Project Name
• Status: Planned -> In Development

Project Updates (con’t)

• Burlington – Lamar 345/230 kV Transmission Project
• Status: Conceptual -> Planned
• San Juan Basin Energy Connect Project
• Status: Planned -> In Development
• San Luis Valley – Calumet – Comanche Transmission

Project

• Status: Planned -> Pending

Big Sandy-Calhan 230 kV Project

Routing to be determined

Big Sandy-Calhan 230 kV Project

Description:  The proposed Project provides new transmission capacity to the

Mountain View load area. It connects the Big Sandy Substation directly to the Calhan Substation and provides the benefit of a second independent transmission path (in addition to the Big Sandy-Midway path) to supply Tri-State resources to Mountain View’s service area. A tie directly to the Big Sandy Substation can be considered an independent transmission source since long-range plans for Eastern Colorado (reference the Lamar-Front Range Study alternatives) include future 345 kV facilities at the Big Sandy Substation.

Falcon-Midway 115kV Line Uprate Project

Falcon-Midway 115kV Line Uprate Project

Description:  The Project consists of modifying or replacing existing transmission

line structures to achieve a higher thermal operating temperature. Subsequently, the rating of the line will be improved from 95 MVA to 140 MVA. The Project is for local load-serving needs.

Pueblo West Line Uprate Project

Pueblo West Line Uprate Project

Description: Upgrade existing 115kV line conductor between West Station and Pueblo West Tap Voltage Class: 115 kV Facility Rating: 130 MVA Length of Line: Approximately 0.5 miles Type of Project: Transmission Line Development Status: Planned Purpose: Mitigate thermal overloads of the Pueblo West Tap to West Station line section.

Montrose – Nucla - Cahone Transmission Upgrade (Western Colorado Transmission Upgrade Project)

Montrose – Nucla - Cahone Transmission Upgrade (Western Colorado Transmission Upgrade Project)

Description: Rebuild existing transmission line and substation facilities between Montrose and Cahone Voltage Class: 230 kV Facility Rating: 645 MVA Length of Line: Approximately 80 miles Type of Project: Transmission Line Development Status: Planned Purpose: Replace aging structures, increase line rating and eliminate existing remedial action scheme.

Burlington - Lamar 345/230 kV Transmission Project

Burlington - Lamar 345/230 kV Transmission Project

San Juan Basin Energy Connect Project

(Shiprock-SW Colorado [Iron Horse] 230 kV Project)

San Juan Basin Energy Connect Project (Shiprock-SW Colorado [Iron Horse] 230 kV Project)

 The purpose of the proposed Project is to serve significant load increases

in the La Plata Electric Association service territory while preserving, as much as possible, the existing transfer capability of the transmission path known as TOT2A during peak load periods.

 Additionally, the long-term BES in Southwestern Colorado will be

strengthened by the proposed Project since the Project calls for a future second 230 kV line on the double circuit structures from the Shiprock

• termination. Eventually, this second 230 kV line would be extended north

to upgrade the TOT2A path. Such a project would provide additional transmission capacity and operating flexibility to the area.

San Luis Valley – Calumet – Comanche Transmission Project

New 2013 Projects

• Valley Corridor Transmission Project

Valley Corridor Transmission Project

Valley Corridor Transmission Project

Description:

New 230 kV transmission line from the existing San Luis Valley substation to a new 230/345 kV substation located west of Taos NM. The new 230/345 kV substation will tap the existing Taos - Ojo 345 kV line and will include 230/345 transformation and a phase shifting transformer. Voltage Class: 230 kV Facility Rating: 630 MVA Length of Line: TBD Type of Project: Transmission Line Development Status: Planned

Purpose:

Mitigate voltage collapse potential in the San Luis Valley and corresponding Under Voltage Load Shedding (UVLS) scheme. Provide looped service from alternative transmission corridor.

Stakeholder Input

• Since last meeting:
• Webinar Performance
• Project Clarifications
• No substantive input to be addressed

For More Information

 www.tristategt.org/TransmissionPlanning

 Comment Form  Transmission Planning Documents  Presentation

 Email: TransmissionPlanning@tristategt.org

Feedback and Alternatives

 To provide comments and alternative solutions, email

TransmissionPlanning@tristategt.org

 These same forms are available through CCPG  Tri-State to evaluate those alternative solutions

provided, prepare recommendations for inclusion in its 10-year plan, and notify the CCPG and you

 Next meeting: August 6, 2013, 9:30 a.m.  Filing at Colorado PUC on February 1, 2014.

Questions?