5 February 2010 - Palo Verde Nuclear Generating Station’s Unit 1 just completed its best year since beginning commercial operation more than 20 years ago. The unit, which began operation in 1986, generated more than 11.5 billion net kilowatt-hours (kWh) of power in 2009.
Overall, the three units at Palo Verde produced more than 30 billion net kWh for only the fifth time in its 24-year history. At 30.6 billion net kWh, the amount of electricity the site generated in 2009 was its second highest ever. Palo Verde is the only power plant of any kind in the United States to generate 30 billion kWh in a single year.
In addition, for the second consecutive year, all three units ran continuously for 100 days or more during the three plus months of highest power demand by APS customers.
The increased output was credited by the Company to decisions to invest in equipment upgrades, including new steam generators and higher efficiency low-pressure turbine rotors in all three units. The upgrades, completed in 2007, are said to have resulted in an increase in plant capacity of approximately 270 MW.