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Shell CEO Wael Sawan has come under pressure over his strategy from within the energy company after two employees issued a rare open letter urging him not to scale back investments in renewable energy, sparking an internal debate.
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The first geothermal power plant built in more than three decades within the California Independent System Operator (CAISO) balancing authority has come online. Mammoth Pacific Geothermal, an Ormat Co. subsidiary, declared the 30-MW Casa Diablo IV (CD4) commercially operational on July 20.
CD4 is located on public land two miles east of the Town of Mammoth Lakes in Mono County, California. The project is part of the Mammoth complex, which includes three other plants—one completed in 1985 and two added in 1990—each with a generating capacity of approximately 10 MW. The complex taps into the Long Valley Caldera’s hydrothermal system at a point where the hot water is only a few hundred feet below ground.
CD4 comprises two Ormat Energy Converter (OEC) binary generating units, each 21.2 MW, and vaporizers, turbines, generators, air-cooled condensers, preheaters, pumps and piping, and related ancillary equipment. OEC binary generating units are based on an Organic Rankine Cycle, and work by vaporizing a secondary working fluid (organic, with a low boiling point) that is heated by the geothermal fluid extracted from an underground reservoir.…
Job fair comes back to the Ohio Valley Mall Martins Ferry Times Leader
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The Lackawanna Energy Center in Pennsylvania entered commercial operation Jan. 15, with the $ 1.5 billion project heralded by its developer, Invenergy, as among the most “technically sophisticated” combined cycle natural gas-fired plants in operation.
The 1,485-MW facility, in the borough of Jessup in Lackawanna County, was completed ahead of schedule and features three General Electric (GE) 7HA.02 high-efficiency, air-cooled natural gas combustion turbines. The facility is expected to provide baseload power to the PJM Interconnection regional transmission organization (RTO) and have the flexibility to respond to spikes in demand, as it balances intermittency on the power grid with the integration of renewables. (A time-lapse video of the plant’s construction is available here.)
“This project is as complicated a combined cycle [plant] as they come,” said Michael Polsky, Chicago-based Invenergy’s founder and CEO, in an interview with POWER. “I think it was pretty remarkable how the Invenergy team and our partners, Kiewit [which build the plant] and GE, did this project, I would say flawlessly.…
The Tenaska Westmoreland Generating Station began commercial operation on Dec. 21, the latest natural gas-fired facility to enter the PJM market.
The 940-MW Tenaska plant, located near Smithton in South Huntingdon Township in Westmoreland County in southwest Pennsylvania, was built in just more than two years, though its planning and permitting process took several years due to opposition from local residents.
The plant is part of a move toward more gas-fired power in PJM, the largest competitive wholesale U.S. power market. PJM serves customers in 13 states in the eastern U.S., and the District of Columbia.
Gas-fired power surpassed coal-fired generation as the fuel of choice in PJM in 2015, as the price of natural gas dropped below the cost of coal across the region. According to a recent report from the U.S. Energy Information Administration (EIA), “The monthly average cost of Central Appalachian coal in the PJM region averaged $ 2.76 per million British thermal unit (MMBtu) in 2013 and has only slightly increased since then, most recently averaging 3.30/MMBtu in 2017.”…