Interregional Coordination

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

California ISO Columbia Grid Logo
Contact: Gary DeShazo Contact: Paul Didsayabutra
Northern Tier Logo Regional Planning Logo
Contact: Sharon Helms Contact: Charles Reinhold


Interregional Coordination Procedures

2018-19 Interregional Coordination Documents

2018 WestConnect Annual Interregional Information

2018-19 Interregional Transmission Project Submittals

ITP Submittal Summaries

ITP Evaluation Process Plans

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

2016-17 Interregional Transmission Coordination Proposed Schedule

2016-17 Interregional Transmission Project Submittals