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An option to curb NOx emissions from the Navajo Generating Station (NGS) near Page, Ariz., put forth by the Environmental Protection Agency (EPA) last October has been endorsed by a coalition of the plant’s stakeholders. The EPA’s supplemental proposal incorporates in large part a Best Available Retrofit Technology (BART) alternative that was submitted by a […]

Increases in spot natural gas prices generally prompted wholesale electricity price hikes across the nation from in 2013, but power prices were the highest in the Pacific Northwest and New England, the Energy Information Administration (EIA) said on Tuesday.  Average wholesale electricity prices at the Mid-Columbia trading hub were $37.53/MWh—soaring 64% in 2013 compared to […]

In an email interview with POWER, Xue Wei, manager for Emerson Process Management Power & Water Solutions, China Business Development, provided some insight into the current state of control systems for Chinese power plants. His responses, edited for style, follow. POWER: How widespread are “state-of-the-art” control systems (yours and others) in new generating plants in […]

The Don A. Campbell geothermal power plant—a 16-MW base load complex located in Mineral County, Nev.—began full capacity operation on Dec. 6, 2013. The plant, named after the geologist who discovered the resource, is supplying electricity to Southern California Public Power Authority (SCPPA) under a Power Purchase Agreement. SCPPA, in turn, resells the power to […]

Complex system operability and reliability demands a broad range of electrical engineering analysis and design services to support facility operations for industrial, utility and federal electrical systems. Grid reliability and stability, degraded grid prevention and detection, and system impact studies as a result of modifications, continue to be critical to safe and reliable operation. Detailed

A large part of the central and eastern U.S. was hit with some of the coldest weather in decades on Jan. 6 and 7. A polar vortex—a large low-pressure area that normally spins in central parts of Canada circulating air up through the North Pole—dislodged and came down into the mid-section of the U.S. With […]

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Eleven new wind turbines have been added at the La Ventosa wind power complex in Juchitán de Zaragoza, Oaxaca, Mexico, raising the total capacity to 102 MW. Iberdrola, owner of the wind farm, has utilized Gamesa technology exclusively at all of its installations in Mexico. In this instance, 2-MW G80 wind turbines, standing 78-meters (256-feet) […]

Arizona Public Service (APS) has purchased Southern California Edison’s (SCE’s) ownership share in the Four Corners Power Plant Units 4 and 5. The two units—located on Navajo land in Fruitland, N.M.—generate a combined 1,540 MW. Ownership had previously been split between six companies, with SCE owning the largest portion (48%) and APS owning 15% prior […]

The controversial federal production tax credit (PTC) bestowed on new wind farms of $0.023/kWh for the first 10 years of their operation expired on Tuesday, but the impact of that policy lapse isn’t immediately clear. Originally enacted in 1992, the federal renewable electricity PTC has been renewed and expanded numerous times—most recently by the American […]