POWER
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Renewables
New Zealand’s Geothermal Industry Is Poised for the Future
Contact Energy fully commissioned New Zealand’s largest geothermal power plant last year, nudging installed geothermal capacity to a shade over 1 GW. Nearly 80% of the country’s electricity is sourced from
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Coal
Power Shortages Challenge Eskom, Force Load Shedding in South Africa
The South African power system is severely constrained and will remain tight until at least the end of April, according to Eskom. The company generates approximately 95% of the electricity used in South Africa
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Gas
Entergy’s Ninemile 6 Plant Completes Construction
Entergy Louisiana’s two-unit, 560-MW combined cycle plant in Westwego, La., just outside New Orleans, completed construction on Dec. 26, both under budget and several months ahead of its original schedule
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Hydro
Cambodia’s Largest Hydropower Plant Begins Operation
The 338-MW Russey Chrum Krom hydropower plant in southwestern Koh Kong province, Cambodia, was inaugurated on Jan. 12. The Chinese-built project is the largest hydropower station located in the Southeast Asian
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Renewables
POWER Digest (March 2015)
TIC to Build First U.S. J-series GT Plant. The Industrial Co. (TIC), a wholly owned subsidiary of Kiewit Corp. ,was recently awarded an engineering, procurement, and construction contract to build a gas
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O&M
Advanced Bearing Technology Eliminates Subsynchronous Steam Turbine Vibrations
A facility’s steam turbine ranks at, or at least near, the top of the list of vital power plant equipment. Without it, the thermal energy in pressurized steam can not be converted to rotary motion, which is
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Legal & Regulatory
Cape Wind Finally Blows Out
If ever there were a case of winning all the battles and losing the war, it would be the saga of the long-delayed-and-now-probably-dead Cape Wind offshore wind project in Massachusetts. As I wrote last year
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Water
Water and Wastewater Treatment Technology Update
Water is the lifeblood of a thermal power plant. As such, obtaining clean and pure makeup water and dealing with wastewater has been a requirement since the first steam generating unit went into operation. As
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Geothermal
Mining for Lithium in Geothermal Brine: Promising but Pricey
Worldwide, the U.S. is the largest producer of geothermal power; however, geothermal energy provides less than 0.5% of total generation in the U.S. Given geothermal’s small piece of the U.S. electricity pie
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Water
Feedwater Chemistry Meets Stainless Steel, Copper, and Iron
Alloys found in the condensate and feedwater systems of power plants include carbon steel for piping, pumps, and in some cases heat exchangers. Many systems still have some copper-based alloys from admiralty
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Environmental
Save Power with Natural Cooling for Building Ventilation
With the final Clean Power Plan rule covering existing power plants scheduled for release this summer, and the amount of flexibility that has been afforded to the states to meet emissions targets, states have
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General
Manufacturing Supercapacitors from Atmospheric Carbon Dioxide
Researchers at Oregon State University (OSU) have developed a method to manufacture nanoporous graphene for use in supercapacitors from atmospheric carbon dioxide (CO2). Graphene is a form of carbon that is
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Gas
Protecting Steam Cycle Components During Low-Load Operation of Combined Cycle Gas Turbine Plants
Originally, the modern combined cycle gas turbine (CCGT) unit was developed to act as a largely baseload source of generation due to its high thermal efficiency and low initial capital cost. But as markets
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Wind
DOE Wind Forecasting Grant Goes to Finnish Firm
The U.S. Department of Energy (DOE) has awarded a $2.5 million contract to Finnish environmental and industrial data firm Vaisala to coordinate a study of methods to improve wind energy forecasting in complex
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Gas
Are Flexible Generation Plants Performing as Expected?
The Lodi Energy Center (LEC) is a 296-MW 1 x 1 combined cycle plant in Lodi, Calif., just north of Stockton and east of the San Joaquin River delta (Figure 1). From the outside, there’s little to distinguish
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Renewables
A Handheld Fuel Cell Generator
After decades of potential but limited deployment, fuel cells are beginning to carve out a role in grid-scale generation (see “59-MW Fuel Cell Park Opening Heralds Robust Global Technology Future” in the
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Coal
SCR Reheat Burners Keep NOx in Spec at Low Loads
Selective catalytic reduction (SCR) systems installed in steam generators for NOx reduction are ordinarily designed for full boiler load conditions, when SCR inlet temperatures normally exceed unit-specific
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Commentary
Speaking of Cuba, Change, and Coincidence
Sometimes, circumstances have a way of developing in such an unexpectedly serendipitous way that they practically force one to take notice. So it is with Cuba and its power sector. Coincidence It all started
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Geothermal
New Zealand Strives to Maximize the Value of Geothermal Wastewater
Geothermal resources have important strategic value for New Zealand, as they are able to directly supply both heat and electricity (see “New Zealand Geothermal Industry Is Poised for the Future” in this
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Gas
U.S., Netherlands Harness Waste Gases for Distributed Generation
Methane emissions are garnering increasing attention because of their potential impact on the climate. Though far less methane is released to the atmosphere than carbon dioxide, methane has 20 to 25 times the
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Nuclear
Nuclear Industry Pursues New Fuel Designs and Technologies
Late last year, Japanese engineers and technicians accomplished a major milestone nearly four years after the most damaging light-water reactor accident in history at the Fukushima Daiichi nuclear station
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Renewables
Mining for Lithium in Geothermal Brine: Promising but Pricey
Brine, the waste stream of the geothermal power production cycle, is usually considered a nuisance. High in corrosive minerals, even when reinjected, it’s challenging to manage. So when Simbol Inc. showed it had a way to turn this waste stream into a revenue stream by mining it for high-value minerals like lithium, a lot of […]
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Business
Power in Peru
Although Peru has been one of the best-performing economies worldwide over the last decade, its energy sector is still small in absolute numbers. Consumption levels per capita are low, even by Latin American standards, and demand growth is highly dependent on new mining investments. Successive governments have kept energy prices low; and regional interconnection, which […]
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Renewables
Global CHP Still Struggling to Break Out of Its Niche
Despite its efficiency and environmental benefits, combined heat and power (CHP) generation has languished at around 10% of worldwide capacity for more than a decade. But a global review shows growth in some sectors and promising new technology on the way. The statistics are both eye-opening and somewhat depressing. Globally, according to the International Energy […]
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Coal
Optimizing Combined Heat and Power in China
As it struggles to grow its economy while improving air quality in urban areas, China is updating its energy delivery infrastructure. A key part of that plan is switching from coal-fired to gas-fired combined heat and power plants. To push efficiency even further, some plants are turning to synchronous clutches. The developed world has done […]
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Cybersecurity
Cyber Threats Proving Their Power over Power Plant Operational Technology
The threats to power industry operations—and the reliable supply of power that we all depend upon for daily life—are no longer theoretical. A roughly 250% spike in reported industrial control system incidents over the past four years demonstrates that regulations alone will not protect power infrastructure. Everyone who works in this industry needs to develop […]
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Cybersecurity
Secure Connectivity Solution “Cloaks” Power Facility Networks
One of the persistent challenges for power sector cybersecurity is integrating operational and information technology teams and functions, especially when they include remote or third-party systems. A new military-grade security approach provides industrial control system security without compromising ease of daily operations. What do power generating companies have in common with The Boeing Co.? The […]
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Nuclear
Dry Cask Storage Booming for Spent Nuclear Fuel
A combination of spent fuel pools reaching capacity, security concerns, and mostly nonexistent policies regarding long-term consolidated storage of nuclear waste is making dry cask storage the only way forward for most nations with nuclear power reactors. Around the world, demand for dry cask storage facilities for spent nuclear fuel (SNF) is on the rise. […]
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Renewables
Rough Seas for Ocean Energy
The world’s ocean energy sector, which has over the past few years seen its share of developmental ebbs and flows, suffered a major storm this November after Siemens Energy said it would sell its tidal power arm and Pelamis Wave Power separately failed to raise needed funds to continue development. Siemens in February 2012, with […]