1. Energy Gateway Gateway West Project Gateway South Project
Technical Study Leads: Idaho Power (Gateway West) and
PacifiCorp (Gateway South)
WECC Phase 2 Study Group Kick-Off Meeting May 22, 2009 Salt Lake City, Utah

2. Standards of Conduct Non-Disclosure Statement
The following procedures have been implemented to provide Standards of Conduct Safeguards:
Ten day advance notice of public meeting
All eligible customers invited
Telephone participation provided
Handouts posted on OASIS prior to meeting
Meeting notes will be taken and posted
One eligible customer must be in attendance
Meetings no more than twice per month

3. Our agenda for today… Welcome Introductions
EGW Phase 2 Study Process – PCC Presentation (April 2009)
Facility Staging
Study Area Path Interactions, Study Participants & Issues
Study Area: “Straw-man” Study Plan
Study Schedule
Q&A

4. WECC Phase 2 Study Group Kick-Off Meeting
Welcome
Introductions

5. WECC Phase 2 Study Group Kick-Off Meeting
Energy Gateway Phase 2 Study Process - PCC Presentation (April 2009)

6. Gateway West
MSTI
SWIP

7. Gateway South

8. Phase 1 Study Effort Studies were performed and reported by path
Five for Gateway West
Three for Gateway South
Reviewing entities interested in local impacts 8

9. Leverage Phase 1 Experience
Perform and review studies within a local area
Attach appropriate local area studies for Phase 2 reports

10. Phase 2 Method Hold Energy Gateway review meetings
Gateway West Project Review Study Group
Gateway South Project Review Study Group
Form five sub-area study groups

11. Gateway West Study Areas
MSTI
Windstar Study Area
Southern Idaho Study Area
Bridger Study Area
SWIP

12. Gateway South Study Areas
Aeolus South Study Area
Mona South Study Area

13. Process Flow Diagram

14. Southern Idaho Area Study
Example Phase 2 Report
Appendix C
Windstar Area Study
Gateway West
Phase 2 Report
Appendix B
Bridger Area Study
Appendix A
Southern Idaho Area Study

15. Energy Gateway Project
Facility Staging

16. EGW Facility Staging
Due to the scope and nature of the EGW project, not all facilities will be constructed during the same period.
As such, facilities will be installed following a segmented approach – focusing on one leg of the project, then another leg, etc.
For example:
Populus – Terminal 345 kV #1 & #2 will be in-service 12/2010 (This project was granted Phase 3 status in 11/2008)
Pinto 345 kV series capacitor (on PNT-HNT 345 kV line) will be in-service 5/2010
St. George (Utah) SVC will be in-Service in 5/2011

17. EGW Facility Staging
Rather than initiate technical studies for each transmission segment, it was decided to group transmission segments into two logical project stages that would be evaluated by WECC Phase 2 study group (or sub groups).
Incremental transmission limitations for transmission segments that are added between stages, will be addressed via OTC studies.
[This same process was followed by BPA and AVISTA for the West of Hatwai Expansion project.]

18. EGW Facilities – Stage 1 (1500 MW)

19. Gateway West – Stage 1 Facilities
Hemingway - Bridger

20. Gateway West – Stage 1 Facilities
Bridger - Windstar
The current schedule calls for all Gateway West – Stage 1 facilities will be in-service by 12/2016.

21. Gateway South – Stage 1 Facilities
Aeolus – Mona – So. Nevada
The current schedule calls for all Gateway South – Stage 1 facilities will be in-service by 12/2017.

22. EGW Facilities – Stage 2 (Full-Build, 3000 MW)

23. Gateway West – Stage 2 Facilities
Hemingway - Bridger

24. Gateway West – Stage 2 Facilities
Bridger - Windstar
The current schedule calls for all Gateway West – Stage 2 facilities will be in-service by 12/2017.

25. Gateway South – Stage 2 Facilities
Aeolus – Mona – So. Nevada
The current schedule calls for all Gateway South – Stage 2 facilities will be in-service by 12/2019.

26. WECC Phase 2 Study Group Kick-Off Meeting
Study Area Path Interactions, Study Participants & Study Issues

27. Study Area Participation
Charts for each Study Areas, which indicate Area Path Interactions, (projected) Study Participants & a drawing of the facilities being evaluated, have been displayed in the meeting room.
Please take time during one of the breaks to review the information and make necessary changes or modifications.
These inputs will help us in move the Phase 2 study efforts forward.

28. Gateway West - So. Idaho Study Area
Paths Analysis
Midpoint West
Borah West (Path 17)
Simultaneous Interactions
Idaho – Northwest (Path 14)
Midpoint – Summer Lake (Path 75)
Boardman - Hemingway
Montana – Northwest (Path 8)
Path C (Path 20)
Montana – Idaho (Path 18)
MSTI Project
SWIP (Great Basin – North, ENTP)
Idaho – Sierra (Path 16)

29. Gateway West – Bridger Study Area
Path Analysis
Bridger West (Path 19)
Path C (Path 20)
Aeolus West
Simultaneous Interactions
Aeolus South
Path C (Path 20)
Montana – Idaho (Path 18)
Bonanza West (Path 33)
Monument – Naughton (PAC Internal)
RS/FH West (PAC Internal)
Bridger West (Path 19)
TOT 1A (Path 30)
Bonanza West (33)

30. Gateway West – Windstar Study Area
Path Analysis
TOT 4A (Path 37)
Simultaneous Interactions
Montana Southeast (Path 80)
TOT 4B (Path 38)
TOT 3 (Path 36)
Yellowtail South
TOT 1A (Path 30)

31. Gateway West – Study Participants
Basin Electric Power Cooperative
Black Hills Cooperation
Bonneville Power Administration, Transmission/Power Services
Columbia Grid
Deseret Generation & Transmission
Edison Mission Energy
Great Basin Transmission Group
Idaho Power Company
NorthWestern Energy
NV Energy
PacifiCorp
Puget Sound Energy, Inc.
TransCanada
TransWest Express LLC
Western Area Power Administration
Western Grid Group
Correspondents
OPUC
Avista Corp.
NWPP Corporation
Wyoming Public Service Commission
EnTranTek LLC and Ridgeline Energy LLC
Invernergy LLC

32. Gateway West – Study Issues
Wyoming Issues
Evaluate interaction between GW and TOT 3 (Wyoming – Colorado); additionally GW and DJ-LRS-Ault transmission lines. (Basin Electric)
Evaluate the interaction between TOT 1A path and each component of the project. (WAPA)
When are SSR Studies planned for? (WAPA)
Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.
Other Issues
GW interaction with Bridger West (PAC)
Interactions between Bridger West and Path C (PAC)

33. Gateway South – Aeolus South Study Area
Path Analysis
Aeolus South
Simultaneous Interactions
Aeolus West
Bridger West (Path 19)
TOT 1A (Path 30)
Bonanza West (Path 30)
IPP DC Line, 2400 MW (Path 27)
Intermountain – Mona (Path 28)
Intermountain – Gonder (Path 29)
Pavant – Gonder (Path 32)
TOT 2C (Path 35)
COI (Path 66)
PDCI (Path 65)

34. Gateway South – Mona South Study Area
Path Analysis
Mona South
TOT 2C
Simultaneous Interactions
IPP DC Line, 2400 MW (Path 27)
Intermountain – Mona (Path 28)
Intermountain – Gonder (Path 29)
Pavant – Gonder (Path 32)
TOT 2C (Path 35)
COI (Path 66)
PDCI (Path 65)
TOT 2A (Path 31)
TOT 2B1/2B2 (Paths 78 & 79)
Centennial Project (Path 81)
SWIP

35. Gateway South – Study Participants
Arizona Public Service
Basin Electric Power Cooperative
Black Hills Corporation
Columbia Grid
Deseret Generation & Transmission
Idaho Power Company
Los Angeles Department of Water & Power
LS Power
NorthWestern Energy
NV Energy
PacifiCorp
Puget Sound Energy
Southern California Edison
Salt River Project
TransWest Express LLC
Tri-State Generation & Transmission
Utah Association of Municipal Power Systems
Western Area Power Administration
Wasatch Wind

36. Gateway South – LADWP Study Issues
Interactions between existing & proposed PST’s at Crystal
TOT 2C path (+/- 600 MW and +2100/-1700 MW) interaction with other paths.
Staging of TOT 2C facilities
Each of the SPS schemes in the report will be further refined and added to the Project POS.
Continue to evaluate simultaneous interactions among components within the GS Project.
Short circuit analysis to quantify impacts on existing breakers in the southern Nevada/Eldorado Valley
Simultaneous Interaction between each of the paths noted below and each component of the GS project, and the project as a whole at the projects max loading:
Path 27 (IPPDC 2400 MW)
Path 28 (Intermountain – Mona)
Path 29 (Intermountain – Gonder)

37. Gateway South – Other Study Issues
How will PacifiCorp determined if the Harry Allen – Mead 500 kV #2 line should be included in the GS plan-of-service. (TWE)
Detailed analysis of the impacts of a new transmission line between Crystal and Mead and the Centennial Project will be evaluated during the Phase 2 studies.
Is there a dependent relationship between the PacifiCorp and other project in WECC Phase 2? (TWE)
Phase 1 studies demonstrated that Gateway South can achieve its ratings with or without the Great Basin North 500 kV line being constructed.
Additional simultaneous analysis for other Western Interconnection paths will be performed during Phase 2 technical studies. 
Evaluate interaction between GS and TOT 3 (Wyoming – Colorado); additionally GS and DJ-LRS-Ault transmission lines. (Basin Electric)
(UPALCO-Carbon 138 kV line): TOT 1A should be monitored and interactions determined in the next phase of studies. (WAPA)
When are SSR Studies planned for? (WAPA)
Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.

38. WECC Phase 2 Study Group Kick-Off Meeting
Study Area: “Straw-man” Study Plan

39. Study Area – “Straw-man” Study Plan
Study Plan Format:
Detail for Phase 1 Analysis
2015 HS base case
Resource Assumptions (PAC IRP & OASIS Inputs)
Project Configuration (Full-Build Option)
Study Criteria
List of Outages, etc.
Place Holder for Phase 2 Studies
Project Staging (1500 MW/3000 MW)
Study Base Cases → See Next Slide
Resource Assumptions
Stage 1 – Updated IRP, Stage 2 – Extended IRP *Being Refined*
Path Simultaneous Interactions
Issues raised by Phase 2 Study participants
Once approved, Study Plan will need to be tailored for each sub-Area

40. Energy Gateway Base Cases

41. WECC Phase 2 Study Group Kick-Off Meeting
Study Schedule

42. Study Schedule
IPC: West of Populus

43. Study Schedule
PacifiCorp

44. WECC Phase 2 Study Group Kick-Off Meeting
Q&A