1. RPCG – 2026 CCTA Results and Next Steps
Colby Johnson & Vijay Satyal
Western Electricity Coordinating Council

2. Western Electricity Coordinating Council
RPCG process
Every 2 year effort
Prior webinars- June, October
Focus of this webinar- Discuss voting results to WECC proposed “include” and “exclude” list
Future meeting/webinar to discuss adjustments
Western Electricity Coordinating Council

3. Colby Johnson, Associate Engineer
2026 CCTA Results
Colby Johnson, Associate Engineer
Western Electricity Coordinating Council

4. Western Electricity Coordinating Council
Overview
CCTA Selection Process Review
CCTA Criteria Flow Chart
Transmission Projects: Under Construction
Met Criteria 1 &2: Default Inclusion
Ballot Review: Inclusion/Exclusion List
Transmission Projects: Not Under Construction
Did meet Criteria 3 & 4 & 5 (if necessary) -> Inclusion
Did not meet Criteria 3, 4, 5 -> Exclusion
Polling Tie Projects: Include/Exclude?
Final 2026 CCTA Project List
Future Improvements
Western Electricity Coordinating Council

5. CCTA Selection Process Review
2026 CCTA Inclusions
All Prior CCTA Projects
2026 CCTA Criteria
Under Constr.
Not Under Constr.
Newly-Submitted CCTA Projects
2026 CCTA Exclusions
Western Electricity Coordinating Council

6. CCTA Not CCTA Criteria 1 No Yes Criteria 2 Criteria 3 Yes No No Yes
Regional Significance No
Project A
Project …
Project Z
Yes
Criteria 2
Under Construction
Criteria 3
Financial Indicators
Yes No No
Yes
Criteria 4
Implement. Indicators
Yes No
Passed RPCG Screen
Criteria 5
Dependency Check
N/A No
CCTA
Yes
Not CCTA
Western Electricity Coordinating Council

7. Transmission Projects: Under Construction
These Projects Met Criteria 1 & 2; Included in CCTA
Central Ferry – Lower Monumental - Complete and In-Service
Delaney-Palo Verde 500kV Line
Delaney-Sun Valley 500kV Line
Desert Basin - Pinal Central - Complete and In-Service
Devers - Colorado River 500 kV (DCR) Transmission
Line Project - Complete and In-Service
Energy Gateway Transmission Project - Segment G (Sigurd - Red Butte 345 kV line) - Complete and In-Service
Hassayampa - North Gila 500kV #2 line - Complete and In-Service
Interior to Lower Mainland Transmission (ILM) Project
Pinal Central-Tortolita - Complete and In-Service
Pinal West-Pinal Central-Browning (SEV) - Complete and In-Service
West of McNary Reinforcement Project Group 2 (Big Eddy - Knight)
Western Electricity Coordinating Council

8. Ballot Results Neutral votes not counted
In instance of a “tie”, this group to determine
Western Electricity Coordinating Council

9. Western Electricity Coordinating Council
Transmission Projects: Not Under Construction Poll Majority – Agree to Include
Met CCTA selection Criterion 3, 4, and/or 5 (when applicable):
Boardman-Hemingway 500 kV (B2H)
Delaney - Colorado River 500 kV Transmission Project (Ten West Link)
Energy Gateway: Wallula – McNary (230 kV)
Energy Gateway South: Aeolus-Mona (500 kV)
Energy Gateway West: Bridger – Populus
Energy Gateway West: Windstar to Jim Bridger
Energy Gateway West: Midpoint – Hemingway
Energy Gateway West: Populus – Midpoint
Energy Gateway West: Populus – Cedar Hill - Hemingway
Centennial II: Harry Allen - Eldorado 500 kV Transmission Project
I-5 Corridor Reinforcement Project (Castle Rock - Troutdale)
Morgan-Sun Valley 500kV Line
*Path 8 Upgrade/Colstrip Transmission Upgrade
*Pawnee-Daniels Park
*Updates provided after poll sent out; 2 additional “Inclusions”
Based on updates, two “new” projects to inclusion list. Are there any disagreements?
Western Electricity Coordinating Council

10. Did not meet Criteria 3, 4, and/or 5:
Transmission Projects: Not Under Construction Poll Majority – Agree to “Exclude”
Did not meet Criteria 3, 4, and/or 5:
Bighorn-Eldorado
Centennial West Clean Line
Chinook
Centennial II (Amargosa-Northwest)
Centennial II (Northwest - Harry Allen)
Great Basin HVDC
Harcuvar Transmission Project
Hemingway-Captain Jack 500 kV Transmission Line
Juan de Fuca HVDC Sea Cable
Juan de Fuca II HVDC Cable
Lamar-Vilas
Lassen 230kV East/West Tie
Lucky Corridor Transmission Project
Mountain States Transmission Intertie (MSTI) (Townsend-Midpoint 500 kV)
North Gila - Imperial Valley #2 Project
NV Energy Robinson - Harry Allen 500 kV Line
Southern Nevada Intertie Project (SNIP)
Southwest Intertie Project - North (SWIP-North)
SunZia Southwest Transmission Project
TransWest Express Transmission Project
West Side Tie
Tres Amigas
Western Spirit Clean Line
Westside Tie 345/500 kV
Wyoming-Colorado Intertie Project
Zephyr
WECC - Eastern Interconnect DC Tie Upgrade Project
Projects highlighted in red, projects where
Western Electricity Coordinating Council

11. Polling Tie Projects (1 to 1 Include/Exclude)
What is the will of the group, Include or Exclude?
Projects were originally in the “Include” list
Southline Transmission Project (Afton-Apache)
Comment: Project sponsor agrees this should not be included at this time
Southline Transmission Project (Apache-Saguaro)
Talega-Escondido / Valley-Serrano 500 kV Interconnect
Comment: Project does not appear in CAISO transmission plan, and has not been submitted to CAISO as a “Merchant Project”
Current status – Undecided – and seek input from RPCG
What is the will of the group? Do we err on the side of caution and exclude? Get members thoughts.
Western Electricity Coordinating Council

12. Final 2026 CCTA Project List
Energy Gateway West: Bridger – Populus
Energy Gateway West: Windstar to Jim Bridger
Energy Gateway West: Midpoint – Hemingway
Energy Gateway West: Populus – Midpoint
Energy Gateway West: Populus – Cedar Hill – Hemingway
Energy Gateway: Wallula – McNary 230 kV
Centennial II: Harry Allen - Eldorado 500 kV
I-5 Corridor Reinforcement Project (Castle Rock - Troutdale)
Morgan-Sun Valley 500kV Line
Path 8 Upgrade/Colstrip Transmission Upgrade
Pawnee-Daniels Park
Central Ferry – Lower Monumental
Delaney-Palo Verde 500kV Line
Delaney-Sun Valley 500kV Line
Desert Basin - Pinal Central
Devers - Colorado River 500 kV (DCR)
Energy Gateway Transmission Project - Segment G (Sigurd - Red Butte 345 kV line)
Hassayampa - North Gila 500kV #2 line
Interior to Lower Mainland Transmission (ILM) Pinal Central-Tortolita -
Pinal West-Pinal Central-Browning (SEV)
West of McNary Reinforcement Project Group 2 (Big Eddy - Knight)
Boardman-Hemingway 500 kV (B2H)
Delaney - Colorado River 500 kV Transmission Project (Ten West Link)
Energy Gateway South: Aeolus-Mona 500 kV
If the previous slide gets unanimous agree to exclude… this will be the final 2026 ccta. If not, we will have to make minor changes.
Blue text denotes under construction or in-service

13. Overall Feedback on Process
Criterion 3 and 4 to be reviewed and/or refined in future planning cycles
Definitions
Thresholds
Adjustments to “criteria” ?
FERC Order 1000 planning based improvements?
Other regulatory/state planning/policy drivers?
Future meeting – June/July – modify CCTA 2028 process?!
Western Electricity Coordinating Council

14. System Adequacy Planning Vijay Satyal – Staff Liaison
Contact Information
Colby Johnson
System Adequacy Planning
Office: (801)
Vijay Satyal – Staff Liaison
Sr. Policy Analyst
Western Electricity Coordinating Council