PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.      7c 
STAFF BRIEFING 
Date of Meeting   December 9, 2014 
DATE:    December 1, 2014 
TO:     Ted Fick, Chief Executive Officer 
FROM:    Dave Soike, Director, Aviation Facilities and Capital Programs 
SUBJECT:  Aviation Standby Power Facility Briefing 
SYNOPSIS 
This briefing is to describe the current realities during an electrical outage at the Airport
and present the need for backup power to the Commission. 
Staff will return to the Commission after an Airport and Airline Affairs Committee
presentation and subsequent Majority-In-Interest vote, for authorization to proceed with
procuring an Airport Standby Power Facility.
BACKGROUND 
Almost all functions at the Airport rely on electricity. The Airport currently has three (3)
megawatts or ten percent of the Airport's electrical demand on back-up power for
life/safety functions.   These functions are primarily based on passenger egress
requirements or getting passengers and staff out of the Airport safely. During  an
electrical power outage, the Airport ceases to operate. 
In 2009 and 2010, the Airport, with support from tenants and airlines, installed 18 
megawatts of temporary backup generators for the Howard Hansen Dam incident and the
looming threat of a long-term power outage to the area. In 2008, a car accident caused
the Airport's south main substation to lose power for several hours. In 2006, a windstorm
knocked out power to the region and portions of the Airport. Power into the Airport has a
single point of failure at the (230kV) Maple Valley BPA Substation. 
ATTACHMENTS TO THIS BRIEFING 
Computer slide presentation. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 


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