Latest
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Commentary
The Hidden Agendas Behind Citizen Suits
The enforcement mechanisms of the environmental statutes in the 1960s were both cumbersome and ineffective.
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Business
China Completes Ultra-High-Voltage Transmission Superhighway
The State Grid Corp. of China (SGCC) in July put into operation the world’s first ultra-high-voltage direct current (UHVDC) superhighway when it commissioned the Xiangjiaba-Shanghai link. The ±800 kV project, completed in 30 months—a year ahead of schedule—has the capacity to transmit up to 7,200 MW from the Xiangjiaba hydropower plant in southwest China to Shanghai, the country’s leading industrial and commercial center, about 2,000 kilometers (km) away.
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Coal
Xcel Energy Fires Up Solar/Coal Hybrid Demonstration
At the end of June, Xcel Energy fired up a demonstration project that integrates a 4-MW parabolic trough solar technology with an existing 44-MW coal-fired power plant.
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Wind
U.S. Wind Speeds Bluster on Climate Phenomena
Renewable energy information services provider 3TIER in July confirmed with its publication of wind performance maps what U.S. wind developers with poor generation numbers had been suggesting earlier this year: A long-lasting El Niño event paired with a North Atlantic Oscillation event caused wind speeds to slump abnormally from the fall of 2009 through spring 2010.
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Solar
Solar Capacity Heats Up Worldwide
Spain in July inaugurated another major concentrated solar power (CSP) power station. The 50-MW La Florida parabolic solar trough plant in Alvarado Badajoz (in the west of the country), increases Spain’s solar nameplate capacity to 432 MW—beating out the U.S., which produces 422 MW from solar installations.
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Hydro
UK Installs Hub to Test Wave Energy Projects
A £42 million marine power infrastructure project that will function as an “electrical socket” in waters 50 meters (m) deep and nearly 16 kilometers (km) off the coast of Cornwall in South West England set sail toward its proposed location this July.
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Gas
The World’s First Two-Stage Turbocharged Gas Engine
GE launched what it is calling the world’s first two-stage turbocharged gas engine this June.
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Business
POWER Digest (September 2010)
MHI, Foster Wheeler to Support FEED for UK CCS Project. A consortium of Mitsubishi Heavy Industries (MHI) and Foster Wheeler Energy Ltd. on August 5 announced that it had received an order from E.ON UK to support the front-end engineering design (FEED) for a post-combustion carbon dioxide (CO2) capture plant proposed as part of E.ON’s […]
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O&M
Ten Years of Experience with FAC in HRSGs
We first reported on combined-cycle plant reliability concerns due to erosive wear and flow accelerated corrosion (FAC) in heat-recovery steam generator (HRSG) pressure parts at the 1999 EPRI Maintenance Conference. More than 10 years later, these damage mechanisms remain significant contributors to forced outages, pressure part repairs, and major component replacement.
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Water
Mine Drainage: An Alternative Source of Water
Although mining practices often vary greatly according to the material produced and the value of the deposit, one common denominator is that mining of materials containing sulfide minerals creates acid mine drainage (AMD). AMD is one of the mining industry’s major environmental challenges.