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Key metrics summary CUSTOMER VALUE — SATISFIED CUSTOMERS


Annual average overall satisfaction rating Residential12 Business13


Key customers14


Number of customers Residential Commercial Industrial Total


Energy deliveries (thousands of megawatt-hours) Residential Commercial Industrial Total


Electric transportation Electric vehicles in Oregon


Public EV charging stations in Oregon Public EV quick-chargers in Oregon


Number of plug-in car models available for sale in Oregon


Reliable energy System Average Interruption Duration Index (SAIDI) (minutes)


System Average Interruption Frequency Index (SAIFI) (per 100 customers)


Customer Average Interruption Duration Index (CAIDI) (minutes)


Momentary Average Interruption Frequency Index (MAIFI) (per 100 customers)


2010


86% 94% 81%


717,719 102,282 265


820,266


7,452 7,277 4,004


18,733


45015 4015 1 3


77 0.65


118 1.09


2011


86% 92% 91%


719,977 102,940 255


823,172


7,733 7,419 4,193


19,345


1,100 308 5 5


66 0.51


129 0.89


2012


86% 94% 94%


723,440 103,766 261


827,467


7,505 7,402 4,283


19,190


2,00015 688 41 12


72 0.55


131 1.11


2013


90% 94% 91%


728,481 104,385 263


833,129


7,702 7,441 4,276


19,419


4,033 802 64 16


62 0.45


137 0.91


2014


88% 94% 91%


735,502 105,231 260


840,993


7,462 7,494 4,310


19,266


6,000 996 109 17


93 0.69


135 1.3


12 Market Strategies International 2014 Electric Utility Satisfaction Study – 4 quarter-rolling average 13 Market Strategies International 2014 Electric Utility Satisfaction Study – 2 quarter-rolling average 14 TQS Research 2014 survey 15 Estimated


8 | 2014 Sustainability Report


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