230 kV LINE WALLA WALLA

1
230 kV LINE WALLA WALLA WALLULA Mc NARY500
kV LINE HEMINGWAY CAPTAIN JACK REGIONAL
PLANNING MEETING

• REGIONAL
• PLANNING PROJECT
• MEETING
• JULY 9, 2008

2
230 kV LINE WALLA WALLA WALLULA Mc NARY500
kV LINE HEMINGWAY CAPTAIN JACK REGIONAL
PLANNING AND PROJECT RATING PROCESS
3
230 kV LINE WALLA WALLA WALLULA Mc NARY500
kV LINE HEMINGWAY CAPTAIN JACK - PROJECT
GUIDELINES

• 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.)

4
230 kV LINE WALLA WALLA WALLULA Mc NARY500
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

5
230 kV LINE WALLA WALLA WALLULA Mc NARY500
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)

6
230 kV LINE WALLA WALLA WALLULA Mc NARY500
kV LINE HEMINGWAY CAPTAIN JACK - PROJECT
GUIDELINES

• 10. Indicate that the sponsors 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.

7
230 kV LINE WALLA WALLA WALLULA Mc NARY500
kV LINE HEMINGWAY CAPTAIN JACK STUDY AREA
8
230 kV LINE WALLA WALLA WALLULA Mc NARY

• 230 kV LINE WALLA WALLA
• WALLULA Mc NARY
• PROJECT
• BENEFITS
• ALTERNATIVES STUDIED

9
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
• LINE TERMINALS REQUIRED AT WALLA WALLA, WALLULA
  AND Mc NARY
• PROPOSED IN-SERVICE DATE IS 2010.

10
230 kV LINE WALLA WALLA WALLULA Mc NARY

• BENEFITS
• PROVIDES UP TO 400 MW OF NEW TRANSMISSION
  CAPACITY
• IMPROVES TRANSMISSION RELIABILITY
• PROVIDES TRANSMISSION CAPACITY FOR NEW WIND
  RESOURCES
• FACILITATES FUTURE INTERCONNECTION OF OTHER
  REGIONAL TRANSMISSION PROJECTS

11
230 kV LINE WALLA WALLA WALLULA Mc NARY
12
230 kV LINE WALLA WALLA WALLULA Mc NARY
SYSTEM BEFORE REINFORCEMENTS (POTENTIAL WIND ON)
13
230 kV LINE WALLA WALLA WALLULA Mc NARY-
SYSTEM AFTER REINFORCEMENTS
14
230 kV LINE WALLA WALLA WALLULA Mc NARY
SYSTEM AFTER POTENTIAL DOUBLE CIRCUIT OUTAGE
15
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
• RAS needed for higher wind penetrations
• New corridor for line will be difficult to obtain

16
230 kV LINE WALLA WALLA WALLULA Mc NARY

• NEXT STEPS
• ADDRESS REGIONAL PLANNING GUIDELINES
• PREPARE REGIONAL PLANNING PROJECT REPORT
• INITIATE PHASE 1 RATING PROCESS

17
230 kV LINE WALLA WALLA WALLULA Mc NARY

• COMMENTS/QUESTIONS?

18
500 kV LINE HEMINGWAY CAPTAIN JACK

• 500 kV LINE HEMINGWAY CAPTAIN JACK
• PROJECT
• BENEFITS
• ALTERNATIVES STUDIED

19
500 kV LINE HEMINGWAY CAPTAIN JACK

• PROJECT
• 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.
• PROPOSED IN-SERVICE DATE IS 2014.

20
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

21
500 kV LINE HEMINGWAY CAPTAIN JACK

• BENEFITS
• SUPPORT WEST SIDE LOAD GROWTH
• ADDRESS RENEWABLE PORTFOLIO STANDARDS
• FACILITATES FUTURE INTERCONNECTION OF OTHER
  REGIONAL TRANSMISSION PROJECTS

22
500 kV LINE HEMINGWAY CAPTAIN JACK
23
500 kV LINE HEMINGWAY CAPTAIN JACK -
ALTERNATIVE A - HVDC TERMINAL ADJACENT TO
GRIZZLY 500 kV
24
500 kV LINE HEMINGWAY CAPTAIN JACK

• NEXT STEPS
• ADDRESS REGIONAL PLANNING GUIDELINES
• PREPARE REGIONAL PLANNING PROJECT REPORT
• INITIATE PHASE 1 RATING PROCESS

25
500 kV LINE HEMINGWAY CAPTAIN JACK

• COMMENTS/QUESTIONS?