Arizona Public Service

The duck curve is named for its resemblance to a duck, with its peaks and valleys highlighting the effect solar production has on the power demanded from thermal generators and hydropower resources throughout

State regulators in Arizona want the state’s investor-owned utilities to source more of their electricity from renewable sources, and develop more energy storage options, rather than rely on new natural gas-fired generation in the future. State senators, however, voted March 14 to give utilities a way to get around any voter-supported mandates for renewables. The […]

Peabody Energy on October 2 said several investors are interested in taking over the Navajo Generating Station in Arizona, a coal-fired power plant on tribal land whose current owners, including Salt River Project (SRP), voted earlier this year to close the facility. Peabody’s Kayenta Mine supplies fuel for the plant. Lazard Freres & Co., a […]

Integrating California Independent System Operator’s (CAISO’s) and PacifiCorp’s networks—the two largest high-voltage transmission grids in the West—could yield billions of dollars in shared cost reductions within the first 20 years alone through efficiencies, a new study says.  The report commissioned by PacifiCorp stems from a memorandum of understanding signed by the independent system operator (ISO) […]

The Palo Verde Nuclear Generating Station led the U.S. in electrical generation in 2014, as it has done for 23 consecutive years, with a total output of 32.3 million MWh. That bested its previous record set in 2012. The Palo Verde plant is located about 45 miles west of Phoenix, Ariz. (Figure 5). It has […]