230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK – REGIONAL PLANNING MEETING
JULY 9, 2008
1
© 2000 PACIFICORP
REGIONAL
PLANNING PROJECT
MEETING
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK –
REGIONAL PLANNING AND PROJECT RATING PROCESS
2
1. Take multiple project needs and plans into account,
including identified utilities’ and non-utilities’ future
needs, environmental and other stakeholder interests;
2. Cooperate with others to look beyond specific end
points of the sponsors’ project to identify broader
regional and subregional needs or opportunities:
3. Address the efficient use of transmission corridors
(e.g., right-of-ways, new projects, optimal line
voltage, upgrades, etc.);
3
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK - PROJECT GUIDELINES
4. Identify and show how the project improves
efficient use of, or impacts existing and planned
resources of the region (e.g., benefits and impacts,
transmission constraint mitigation);
5. Cooperate with Regional Planning Review Group
members in determining the benefits and impacts due
to the project;
6. Identify transmission physical and operational
constraints resulting from the project or that are
removed by the project;
4
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK - PROJECT GUIDELINES
7. Coordinate project plans with and seek input from
all interested members, subregional planning groups,
power pools, and region-wide planning group(s);
8. Coordinate project plans with and seek input from
other stakeholders including utilities, independent
power producers, environmental and land use groups,
regulators, and other stakeholders that may have an
interest;
9. Review the possibility of using the existing system,
upgrades or reasonable alternatives to the project to
meet the need (including non-transmission
alternatives where appropriate);
5
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK - PROJECT GUIDELINES
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK - PROJECT GUIDELINES
© 2000 PACIFICORP
10. Indicate that the sponsor’s evaluation of the project
has taken into account costs and benefits of the
project compared with reasonable alternatives;
11. Coordinate with potentially parallel or competing
projects and consolidate projects where practicable.
6
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
500 kV LINE HEMINGWAY – CAPTAIN JACK – STUDY AREA
7
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
230 kV LINE WALLA WALLA –
WALLULA – Mc NARY
– PROJECT
– ALTERNATIVES STUDIED
8
© 2000 PACIFICORP
– BENEFITS
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
PROJECT
– CONSTRUCT NEW SINGLE-CIRCUIT 230 kV LINE
FROM WALLA WALLA TO WALLULA TO Mc NARY
– APPROXIMATELY 56 MILES OF NEW LINE
– PROPOSED IN-SERVICE DATE IS 2010.
9
© 2000 PACIFICORP
– LINE TERMINALS REQUIRED AT WALLA WALLA,
WALLULA AND Mc NARY
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
BENEFITS
– PROVIDES UP TO 400 MW OF NEW
TRANSMISSION CAPACITY
– IMPROVES TRANSMISSION RELIABILITY
– FACILITATES FUTURE INTERCONNECTION OF
OTHER REGIONAL TRANSMISSION PROJECTS
10
© 2000 PACIFICORP
– PROVIDES TRANSMISSION CAPACITY FOR NEW
WIND RESOURCES
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
11
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY – SYSTEM BEFORE
REINFORCEMENTS (POTENTIAL WIND ON)
12
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY- SYSTEM AFTER REINFORCEMENTS
13
© 2000 PACIFICORP
230 kV LINE WALLA WALLA – WALLULA – Mc NARY – SYSTEM AFTER POTENTIAL DOUBLE
CIRCUIT OUTAGE
14
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
CONCLUSIONS TO-DATE
– Single Circuit performs well
– Double Circuit performs better

Present needs indicate a double circuit is not required
– New corridor for line will be difficult to obtain
15
© 2000 PACIFICORP
– RAS needed for higher wind penetrations
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
NEXT STEPS
– ADDRESS REGIONAL PLANNING
GUIDELINES
– INITIATE PHASE 1 RATING PROCESS
16
© 2000 PACIFICORP
– PREPARE REGIONAL PLANNING PROJECT
REPORT
230 kV LINE WALLA WALLA – WALLULA – Mc NARY
© 2000 PACIFICORP
COMMENTS/QUESTIONS?
17
500 kV LINE HEMINGWAY – CAPTAIN JACK
500 kV LINE HEMINGWAY –
CAPTAIN JACK
– PROJECT
– ALTERNATIVES STUDIED
18
© 2000 PACIFICORP
– BENEFITS
500 kV LINE HEMINGWAY – CAPTAIN JACK
PROJECT
– PROPOSED IN-SERVICE DATE IS 2014.
19
© 2000 PACIFICORP
– 320 MILE (APPROX.) SINGLE CIRCUIT 500 kV
LINE FROM NEW PROPOSED HEMINGWAY
SUBSTATION NEAR MELBA, IDAHO TO THE
EXISTING CAPTAIN JACK 500 kV
SUBSTATION IN SOUTHERN OREGON.
500 kV LINE HEMINGWAY – CAPTAIN JACK
ALTERNATIVES STUDIED
–
USED WECC 2010 LIGHT AUTUMN CASE
–
ADDED TO BASE CASE:
GATEWAY CENTRAL, WEST & SOUTH
I-5 REINFORCEMENT
NORTHERN CALIFORNIA LINE
SOUTHERN CROSSING
WEST OF Mc NARY
–
EVALUATED POWER SYSTEM SENSITIVITY TO HVDC TERMINUS
–
EVALUATED POWER SYSTEM SENSITIVITY TO HEMINGWAY TO
CAPTAIN JACK TERMINUS
20
© 2000 PACIFICORP
•
•
•
•
•
500 kV LINE HEMINGWAY – CAPTAIN JACK
BENEFITS
– SUPPORT WEST SIDE LOAD GROWTH
– FACILITATES FUTURE
INTERCONNECTION OF OTHER
REGIONAL TRANSMISSION PROJECTS
21
© 2000 PACIFICORP
– ADDRESS RENEWABLE PORTFOLIO
STANDARDS
© 2000 PACIFICORP
500 kV LINE HEMINGWAY – CAPTAIN JACK
22
© 2000 PACIFICORP
500 kV LINE HEMINGWAY – CAPTAIN JACK - ALTERNATIVE A
- HVDC TERMINAL ADJACENT TO GRIZZLY 500 kV
23
500 kV LINE HEMINGWAY – CAPTAIN JACK
NEXT STEPS
– ADDRESS REGIONAL PLANNING
GUIDELINES
– INITIATE PHASE 1 RATING
PROCESS
24
© 2000 PACIFICORP
– PREPARE REGIONAL PLANNING
PROJECT REPORT
500 kV LINE HEMINGWAY – CAPTAIN JACK
© 2000 PACIFICORP
COMMENTS/QUESTIONS?
25