1. Western Planning Regions Interregional (IR) Coordination Activities
Transmission Expansion Planning Policy Committee
May 6, 2015
Salt Lake City, UT

2. All Western Planning Regions are currently planning under Order 1000 regional processes
FERC Interregional Orders were issued on December 18, 2014
Regions submitted compliance filings February 18, 2015
No comments were filed with FERC
Regions are currently developing the process details for planning coordination
Details will be vetted through an open stakeholder process prior to west-wide Order 1000 IR implementation on October 1, 2015

3. Order 1000 Requirements It Does not Require It Does Require
Formation of interregional transmission planning entities,
The creation of a distinct interregional transmission planning process, or
An interregional transmission plan
It Does Require
Process to coordinate/share results/plans among planning regions
Procedure to identify & jointly evaluate interregional transmission projects
Annual exchange of planning data & related information
Mechanism for communicating information about planning processes

4. Coordination Opportunities and Process Steps
Annual Interregional Coordination Meeting
Annual information exchange
Interregional data sharing at discrete points in each Regional process
Additional coordination meetings as needed
Joint evaluation of Interregional Transmission Projects (“ITPs”)
Process steps to coordinate
ITP submittals & evaluation, study schedule, & stakeholder input
Interregional data exchange, development of assumptions, & technical studies
Cost allocation

5. Next Steps
In process of developing initial draft of coordination procedures and guidelines
Based on aligned fundamental principles for data exchange, coordinated/common assumptions, etc.
Desire to build a collaborative relationship with our peers (WECC, WIRAB, CREPC, etc.)
Goal
Avoid duplication of effort and cost
Provide complimentary and not competing analyses
Ensure that those with compliance obligations can timely and efficiently meet their obligations

6. Western Planning Region Group has been formed to develop overall coordination protocols
Western Planning Region Group will consider interregional coordination needs through two separate but parallel efforts
Develop process and procedures for interregional coordination
Identify areas where WECC could provide value helping the Western Planning Regions meet their Order 1000 obligations
Order 1000 process and procedures
A process/procedures document will be developed that articulates the details on how interregional coordination will be accomplished
Coordination may be facilitated through an informal coordination work group formed by the Western Planning Regions
Draft of the process/procedures document will be shared with stakeholder as an initial draft
Western Planning Region and WECC relationship
Initial concepts have been developed and in the initial stages of discussion
Among others, the initiative is identify how WECC could provide the Planning Regions with the support they need to meet their Order 1000 compliance obligations

7. Interregional Order 1000 Implementation Timeline & Stakeholder Input
* IO1K = Interregional Order 1000

8. Western Electricity Coordinating Council
RPCG
Purpose
Soliciting input on - potential transmission projects with probability of being in-service in the next 10 years
Assist with best-estimates on transmission topology
Stakeholder driven to reflect diversity of views
Western Electricity Coordinating Council

9. Western Electricity Coordinating Council
CCTA Process
Critical for WECC interconnection-wide planning
Criteria-driven process (quantitative & subjective)
Stakeholder input before submittal to TAS
Valuable for future planning for Regional Planning Groups
Western Electricity Coordinating Council

10. 2026 Common Case Development Timeline (Tentative)
Tentative: 2025 HS Powerflow
2026 CCTA
2026 Load Forecast
Three parts to “common case pie” (generation, transmission, load).
-Generation:
-Loads and Resources Data (BA submitted, based on recent information) (bulk of gen. data comes from this)
-EIA Data (submitted by generator owner, typically has supplemented the L&R information well)
-LBNL Data (Based on LSE IRPs)
-Transmission:
-Powerflow case (2025 Heavy Summer for 2026 CC probably)
-CCTA (later added to powerflow using .epc files…. Submitted to WECC or easily created by WECC)
-Loads:
-Loads and Resources (BA submitted load forecast)
*Notes: There are redundancies and opportunities for duplication in each piece of the pie. Ongoing efforts to reduce, identify, or otherwise reconcile the data.
2025 HS Powerflow
2026 CCTA
2026 Load Forecast
March April May June July August
Western Electricity Coordinating Council

11. Western Electricity Coordinating Council
55 days
CCTA Process Kickoff
Mar 2 - May 15
60 days
Update Project Portal
Feb 16 - May 9
88 days
Develop and Revise CCTA Assumptions
Apr 15 - Aug 15
22 days
Final CCTA review
Aug 15
Sep 15
88 days
2026 Common Case Kickoff
Sep 1 - Dec 31
2015
2015
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2015
Today
In-person meeting
8/14/2015
Project Kickoff
4/1/2015
Western Electricity Coordinating Council

12. Contact Information
CAISO
Gary DeShazo, (916)
ColumbiaGrid
Paul Didsayabutra, (503)
Northern Tier Transmission Group
Sharon Helms, (503)
WestConnect
Charles Reinhold, (208)