APS 2011 Annual Report Download - page 15

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Please find page 15 of the 2011 APS annual report below. You can navigate through the pages in the report by either clicking on the pages listed below, or by using the keyword search tool below to find specific information within the annual report.

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To prepare for a summer monsoon season that would be Arizona’s hottest ever, APS
constructed or rebuilt 100 miles of transmission lines and upgraded several substations
around the state in 2011. These actions helped the company deliver exceptional levels
of power reliability. In 2011, the average APS customer experienced 0.79 outages with 69
minutes of interrupted service – both company records. APS also continued testing and
implementing new digital grid technologies to reduce outages and improve the customer
experience. Based on these efforts, Intelligent Utility magazine ranked APS the fourth
most “intelligent utility” nationwide.
DEPENDABLE ENERGY
APS ELECTRIC RELIABILITY IMPROVEMENT
Average Electric Outages per APS Customer
2
1.5
1
.5
0
20 01
0.79
1.11
1.61
2 0 0 6
2011
0.79
AVERAGE OUTAGES EXPERIENCED
PER CUSTOMER IN 2011
1.61
AVERAGE OUTAGES EXPERIENCED
PER CUSTOMER IN 2001
PINNACLE WEST CAPITAL CORPORATION
DELIVERING
POWER DELIVERY / 13