Arizona Public Service is the 7th largest supplier of new solar energy generation by a utility in the U.S., according to the Solar Top 10 Utility Solar Rankings by the Solar Electric Power Association. APS provided 29.9 MW of new solar power capacity in 2010. The #1 increase came from California's Pacific Gas & Electric with 157.3 MW added. [right, APS' Prescott Airport solar plant, 3MW capacity. Credit, APS]
Tucson Electric Power came in 6th in the second category, Solar Watts per Customer, which measures the amount of new solar capacity installed, divided by the number of customers. TEP weighs in at 29.7 watts per customer, compared to top-ranked Silicon Valley Power (CA) with 39.9 watts.