Gas

Long viewed as a potential “next big thing” for power generation—often drawing unwarranted hyperbole in the process—and more recently as niche distributed generation, fuel cells are finally beginning to make some noise at grid scale. Hydrogen- and natural gas–powered fuel cells have been deployed over the past decade in behind-the-meter and microgrid applications for on-site […]

The Tennessee Valley Authority (TVA) is poised to decide on the fate of a coal-fired power plant in Tennessee.  At its next meeting on Aug. 21, the TVA board will likely choose to retire three existing coal-fired units at the Allen Fossil Plant in Shelby County, Tenn., by December 2018 and replace them with a […]

NRG Energy is the latest company in a string of generators choosing to cease burning coal at generating units to comply with environmental rules.   An environmental action plan to reduce air pollution in Illinois released by the New Jersey–based company on Aug. 7 proposes to retire the 251-MW coal-fired Unit 3 at the 761-MW […]

With three recent requests to the Federal Energy Regulatory Commission (FERC), the Environmental Protection Agency (EPA) has signaled it may seek to slow the recent drive to export liquefied natural gas (LNG). Three times this year, the Texas regional office of the EPA has asked FERC to consider wider impacts of increased greenhouse gas emissions […]

This supplement to “Strategies for Inspecting HRSGs in Two-Shift and Low- Load Service” in the August issue includes additional discussion of the heat recovery steam generator (HRSG) Inspectors Toolkit and HRSG Inspection Guide sections of the main article plus additional photos of damage caused by rapid startups and two-shifting of units over time. More Tools […]

A combination of falling natural gas prices, greater integration of renewable generation, and advancing technology has meant changing roles for many plants, particularly gas turbine combined cycle plants. (See “Managing the Changing Profile of a Combined Cycle Plant” in the June 2014 issue.) The added wear and tear on plant equipment, and the changing maintenance […]

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Zeng Ming, Duan Jinhui, Wang Liang, Gu Shanshan In 2013, urbanization in China reached 53.73%. Urbanization has become an important field for national reform. On the one hand, urbanization is effective for

Consensus is that the locus of world energy demand has shifted away from the U.S. and Europe to Asia, driven by the soaring economies of the 10 countries that make up the Association of Southeast Asian Nations

Aheat-recovery steam generator (HRSG) is much like other power generation equipment—run it at design conditions and chances are it will run with high availability and require only routine maintenance for