Palo Verde 1 nuclear unit returns to full power

Unit 1 of the Arizona Public Service Palo Verde nuclear plant in Arizona was listed back at 100% power early Sept. 15, according to data from the Nuclear Regulatory Commission (NRC).

 Palo Verde 1 had gone offline Sept. 7 after experiencing a problem with a stuck open main spray valve. The facility had returned to partial generation on Sept. 14, when it was listed by NRC at 31%.

The Pinnacle West Capital (NYSE:PNW) utility describes the Palo Verde nuclear station as the nation’s largest producer of emission-free energy.

In 2015, the three-unit nuclear complex generated 32.5 million megawatt-hours (MWh) of carbon-free electricity.

When operating fully, the three pressurized water reactors (PWRs) at the Palo Verde station in Maricopa County, Arizona can together generate about 5,000 MW.

About Wayne Barber 4201 Articles
Wayne Barber, Chief Analyst for the GenerationHub, has been covering power generation, energy and natural resources issues at national publications for more than 20 years. Prior to joining PennWell he was editor of Generation Markets Week at SNL Financial for nine years. He has also worked as a business journalist at both McGraw-Hill and Financial Times Energy. Wayne also worked as a newspaper reporter for several years. During his career has visited nuclear reactors and coal mines as well as coal and natural gas power plants. Wayne can be reached at