Pinnacle West was named one of the Global 100 Most Sustainable Corporations in the World by Corporate Knights at the 2005 World Economic Forum in Davos, Switzerland
Pinnacle West received the highest rating (AAA) and ranked in the top two of utilities in the United States by Innovest Strategic Value Advisors in a comprehensive analysis on the U.S. Electric Power Sector covering the environmental, social and governance factors of the largest publicly-traded utility companies
PNW was listed in the 2005 Dow Jones North America Sustainability Index and the 2005 Dow Jones United States Sustainability Index as a sustainability leader in the electric industry
APS won the coveted "Crescordia" award from Valley Forward for its work at the APS Solar Test and Research (STAR) Center in Tempe, Arizona. STAR won this award as the top honor in the Arizona private sector environmental technologies category
2005 Clean Air Champion Award from the Clean Cities Coalition for the APS Hydrogen Fueling Station
Award of Merit in the Livable Communities category from Valley Forward Association for the APS Redhawk power plant, which was recognized for its efforts in creating a sustainable environment
Tree Line USA Award for APS by the Arizona Community Tree Council in recognition of APS' leadership in urban forestry and environmental stewardship - the ninth consecutive year the company has received this award
Stevie Award in the category of Best Customer Service Team at the American Business Awards for efforts in avoiding customer curtailments following a fire at Westwing Substation