REGIONAL PLANNING

WestConnect and regional entities throughout the western interconnection collaborate during their regional transmission planning processes to ensure regional transmission stability and efficiency. These coordination efforts inform each entity's regional transmission plans.

 

Western Planning Regions

WPR IR Transmission Lines Map
Contact: Biju Gopi	Contact: Chelsea Loomis		Contact: Heidi Pacini

 

Interregional Coordination Procedures

• WestConnect Regional Planning Process Business Practice Manual (.pdf)
  
  

2024-25 Interregional Coordination Documents

   
    2024 WestConnect Annual Interregional Information

• 2022-23 WestConnect Regional Transmission Plan (.pdf)
• 2024-25 WestConnect Final Regional Study Plan (.pdf)
• Interregional Project Submittal Information (.pdf)
• Designated Communication Portals (.pdf)
  

    2024-25 Interregional  Transmission Project Submittals

     ITP Evaluation Process Plans

• Western Bounty Transmission System (.pdf)
• Sloan Canyon – Mead 230 kV Project (.pdf)
• Mead – Mohave Project (.pdf)

2022-23 Interregional Transmission Project Submittals

    ITP Evaluation Process Plans

• North Gila – Imperial Valley #2 Transmission Project (.pdf)
  
  

2022-23 Interregional Coordination Documents

• 02-26-2022 Designated Communication Portals (.pdf)

• 2022 ITP Submittal Matrix (.pdf)

    2022 Annual Interregional Information

• WestConnect 2020-21 Regional Transmission Plan (.pdf)
• WestConnect Draft 2022-23 Regional Study Plan (.pdf)
  • Open Stakeholder Comment Window: The WestConnect Planning Management Committee (PMC) invites your review of the WestConnect Draft 2022-23 Regional Study Plan. Your comments are due by February 25, 2022.
  • Please use this comment form to organize your comments and e-mail the form to comments@westconnect.com.

 

2020-21 Interregional Transmission Project Submittals

ITP Evaluation Process Plans

• Cross-Tie Project (.pdf)
• Northwest Tie Upgrade (.pdf)
• SWIP North Project (.pdf)
• TransWest Express Project (.pdf)

     

2020-21 Interregional Coordination Documents

• 2020-2021 Interregional Coordination and ITP Evaluation Schedule (.pdf)
• 2020 ITP Submittal Matrix (.pdf)
• Designated Communication Portals (.pdf)

2021 WestConnect Annual Interregional Information

• 2020-21 Model Development Report (.pdf)
• 2020-21 Needs Assessment Report (.pdf)
• No regional transmission needs have been identified in the 2020-21 Regional Planning Cycle, and as such, no regional project submittal window was opened this cycle. In the absence of any regional transmission needs, WestConnect will not be evaluating any Interregional Transmission Projects in the 2020-21 planning cycle.

2020 WestConnect Annual Interregional Information

• 2018-19 Regional Transmission Plan (.pdf)
• Final 2020-21 Regional Study Plan (.pdf)

2018-19 Interregional Coordination Document

2019 WestConnect Annual Interregional Information

• 2018-19 Model Development Report  (.pdf)

• No regional transmission needs have been identified in the 2018-19 Regional Planning Cycle, and as such, no regional project submittal window has been opened this cycle. Correspondingly, no Interregional Transmission Projects were submitted to WestConnect during the regional project submittal window in response to an identified regional transmission need.
• Needs Assessment Report (.pdf)
• All information related to the 2018-19 Regional Planning Process can be accessed here.

2018 WestConnect Annual Interregional Information

• 2016-17 Regional Transmission Plan - Final (.pdf)
• 2018-19 Final Regional Study Plan (.pdf)

• All information related to the 2018-19 Regional Planning Process can be accessed here.

2018-19 Interregional Transmission Project Submittals

ITP Submittal Summaries

• Cross-Tie Transmission Line (.pdf)
• North Gila-Imperial Valley #2 (.pdf)
• SWIP North Project (.pdf)
• SDGE HVDC Conversion Project (.pdf)
• TransWest Express DC Project (.pdf)
• TransWest Express AC and DC Project (.pdf)

ITP Evaluation Process Plans

• Cross-Tie Transmission Line (.pdf)
• North Gila-Imperial Valley #2 (.pdf)
• SWIP North Project (.pdf)
• SDGE HVDC Conversion Project (.pdf)
• TransWest Express DC Project (.pdf)
• TransWest Express AC and DC Project  (.pdf)

2016-17 Interregional Coordination Documents

2017 WestConnect Annual Interregional Information

• WestConnect 2016-17 Model Development Report (.pdf)
• The 2016-17 Regional Transmission Needs Assessment Report is currently under review by the Planning Subcommittee. A link to the final report will be provided once available.
• No regional transmission needs have been identified in the 2016-17 Regional Planning Cycle, and as such, no regional project submittal window has been opened this cycle. Correspondingly, no Interregional Transmission Projects were submitted to WestConnect during the regional project submittal window in response to an identified regional transmission need.
• Additional information regarding the current status of the 2016-17 Regional Planning Cycle can be accessed here.

2016 WestConnect Annual Interregional Information

• WestConnect 2015 Regional Transmission Plan (.pdf)
• WestConnect Draft 2016-17 Regional Study Plan and Base Transmission Plan (.pdf)

2016-17 Interregional Transmission Coordination Proposed Schedule

• 2016-2017 Interregional Transmission Coordination Proposed Schedule (.pdf)

2016-17 Interregional Transmission Project Submittals

• WestConnect ITP Submittal Summary Map (.pdf)
  
  
• ITP Submittal Summaries:
• Cross-Tie Project (.pdf)
• SWIP-North Project (.pdf)
• TransWest Express Project (.pdf)
• SDGE HVDC Conversion Project (.pdf)
  
  
• ITP Evaluation Process Plans:
• Trans West Express Version 2 2 06-16-16 (.pdf)
• Cross Tie Version 4 0 06-14-16 (.pdf)
• HVDC Upgrade Version 2 1 06-14-16 (.pdf)
• SWIP N Draft Final Version 2 1 05-31-16 (.pdf)