About Pinnacle West
Headquartered in Phoenix, Arizona, and serving the West since 1886, APS, Pinnacle West and its subsidiaries have earned a reputation for customer satisfaction, shareholder value, operational excellence and business integrity. Through our subsidiaries we generate, sell and deliver electricity and energy-related products and services in the western United States. We also develop commercial real estate properties. Pinnacle West's largest subsidiary, Arizona Public Service Company (APS), is the largest electric utility in Arizona, serving about 1.1 million customers across the state.

Pinnacle West:

• Is in Standard and Poor's 500 index and is traded on the New York Stock Exchange under the symbol: PNW
• Consolidated assets of $11 billion,  including approximately 6,400 megawatts of power plant generation capacity
• APS had 1.1 million customers at year end, in 11 of Arizona’s 15 counties, and is expected to add another 600,000 customers - a 55 percent increase - by 2025.
• Was given a AAA (highest) rating, and ranked in the top two among utilities in the United States in every review since 2001 by Innovest Strategic Advisors for our environmental and sustainability performance
• Was listed in the 2008 Dow Jones North America Sustainability Index and in the 2008 Dow Jones United States Sustainability Index as a sustainability leader in the electric industry. This is the fourth consecutive year that Pinnacle West has been on the Dow Jones Sustainability Indexes

Major Products and Services
As of December 31, 2008, Pinnacle West has two principal business segments (determined by products, services and the regulatory environment):

• The regulated electricity segment (accounting for 93 percent of operating revenues in 2008), which consists of traditional regulated retail and wholesale electricity businesses (primarily electric service to native load customers) and related activities, and includes electricity generation, transmission and distribution; and
• The real estate segment (accounting for 4 percent of operating revenues in 2008), which consists of SunCor’s real estate development and investment activities.

In addition, Pinnacle West has a competitive business segment, APS Energy Services, which provides innovative energy and renewable solutions designed to increase energy efficiency, upgrade equipment and provide sustainability to our environment.