1. Attachment-K Q3 Public Meeting Coos Bay Area Transmission Planning Study Kickoff Area Planner: Adam Lint Presented by Larry Frick September 13, 2018
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2. Sub-Transmission Planning Studies
Pacific Power study plan
Service Area is divided into 17 study areas
The studies are designed to predict the future electrical system requirements about 5-7 years out.
The goal is to update each about every 36 months.
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3. Pacific Power Study Areas
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4. Inputs to a Planning Study
New load requests (L&R)
Customer transmission & substation data
Generation increases and operations plans
Potential system modification data
Two restrictions to public access
Maintaining confidential customer information
Maintaining FERC & WECC codes of conduct
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5. Coos Bay Area Topology Main Grid Sources
230 kV
Alvey-Fairview
Dixonville-Fairview
Common Corridor
Fairview-Isthmus
115 kV
Tahkenitch-Fairview
Coos-Curry system downstream via BPA Rogue and BPA Bandon

6. Coos Bay Area Topology Northern Portion
kV Isthmus source
Distribution substations
Coos River South Dunes
Lockhart Empire
State Street Jordan Point
Normal open points
At Empire facing State Street, switch 2C14
At Lockhart facing Red Dike Tap, breaker 2C6
Both SCADA controlled
Normal Open Points

7. Coos Bay Area Topology Southern Portion
Pacific Power subs
Coquille
Myrtle Point
Norway Tie
Bandon
(Pac. portion)
Foreign subs
Fairview
Norway
CCEC subs

8. Coos Bay Area Loads (Pacific Power)
Based on most recent load projections
Summer ~ 94 MW
Winter ~ 150 MW
Overall growth rate 0.2%
Winter limited
Overall load factor 51%
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9. Coos Bay Area Transmission Planning Study
Expected completion 2019 Q2
Questions or Input requests?
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