Pinnacle West:

• is in Standard and Poor's 500 index and is traded on the New York Stock Exchange under the symbol: PNW
• is headquartered in Phoenix, Arizona - one of the fastest growing regions in the United States
• assets include approximately 6,400 megawatts of plant generation capacity
• was named one of the Global 100 Most Sustainable Corporations in the World by Corporate Knights in 2005 and 2006
• was given an AAA (highest) rating, and ranked in the top two utilities in the United States in every review since 2001 by Innovest Strategic Advisory for environmental and sustainable performance 
• was listed in the 2005 and 2006 Dow Jones North America Sustainability Index and in the 2005 and 2006 Dow Jones United States Sustainability Index as a sustainability leader in the electric industry
   

Major Products and Services

Pinnacle West’s two principal business segments are:

• Arizona Public Service Company, our regulated electricity segment (accounting for 77 percent of operating revenue in 2006), 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 our real estate segment (accounting for 12 percent of operating revenue in 2006), which consists of SunCor’s real estate development and investment activities.

In addition, Pinnacle West has a small business segment in competitive energy business, including wholesale marketing and trading and retail commodity-related energy services, which is provided by our APS Energy Services company.

These business segments are discussed in more detail in our 2006 PNW Annual Report as well as the Subsidiary section of this report.