Attachment-K Q3 Public Meeting Coos Bay Area Transmission Planning Study Kickoff Area Planner: Adam Lint Presented by Larry Frick September 13, 2018 Choose from three different title slide designs by selecting “New Slide.” These slides are suitable for business and community presentations.

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. This is intended as an agenda slide template. Choose from different slide layouts by selecting “New Slide.”

Pacific Power Study Areas This is intended as an agenda slide template. Choose from different slide layouts by selecting “New Slide.”

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 This is intended as an agenda slide template. Choose from different slide layouts by selecting “New Slide.”

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

Coos Bay Area Topology Northern Portion 230-115 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

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

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% This is intended as an agenda slide template. Choose from different slide layouts by selecting “New Slide.”

Coos Bay Area Transmission Planning Study Expected completion 2019 Q2 Questions or Input requests? This is intended as an agenda slide template. Choose from different slide layouts by selecting “New Slide.”