In This Issue
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RenewablesGeothermal Energy: Is New Technology Resetting the Agenda?
After years of stressing the conventional virtues of geothermal power production—reliable, baseload renewable energy from geological sources—the geothermal industry and the U.S. government are looking at ways technology can change the hot rocks game and give a boost to an often-overlooked resource. Legendary venture capitalist Vinod Khosla, who made a pile of money in information […]
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CoalTOP PLANTS: Columbia Energy Center, Portage, Wisconsin
Alliant Energy and its co-owners are investing $900 million to modernize the Columbia Energy Center with a new suite of air quality control equipment and plant improvements that will increase its output and efficiency while reducing emissions. The plant makeover ensures its continued operation for decades to come. In 2009, Wisconsin Power and Light Co., […]
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CoalTOP PLANTS: Manjung Unit 4, Perak, Malaysia
Owner/operator: TNB Janamanjung Sdn. Bhd. Ultrasupercritical technology is the current gold standard for coal-fired plants, but Malaysian national utility Tenaga Nasional Berhad had some unique requirements for its newest, most efficient plant. With a client lacking an indigenous source of coal and needing wide fuel flexibility, Alstom delivered a state-of-the-art plant that can handle an […]
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CoalTOP PLANTS: Ottumwa Generating Station, Ottumwa, Iowa
Owner/operator: Interstate Power & Light Co. (a subsidiary of Alliant Energy) and MidAmerican Energy Co. (a subsidiary of Berkshire Hathaway Energy) / Alliant Energy Alliant Energy recently completed a major renovation of the Ottumwa Generating Station to improve air quality, plant reliability, and efficiency. By doing so it also reduced its carbon footprint by ~5.6%. […]
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CoalTOP PLANTS: Ramagundam Super Thermal Power Station, Karimnagar, Telangana, India
Owner/operator: NTPC Ltd. One of NTPC’s first coal-fired facilities, the 2.6-GW Ramagundam plant, is aging well, delivering noteworthy performance metrics that distinguish it from other plants in the state-owned generator’s big coal fleet. For nearly four decades, the 2.6-GW Ramagundam Super Thermal Power Station’s vermillion-banded stacks have towered over the green teak forests of what […]
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CommentaryPower Industry Policy Flip-Flops
When I started working in the energy industry in 1999, I had a conversation one day with Adam, a researcher who was writing a report for utilities that were marketing “green energy” programs. At the time, customers’ ability to purchase solar- or wind-generated electrons was limited to fewer utilities, and those companies were looking for […]
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CoalTOP PLANTS: Shanghai Waigaoqiao No. 3, Shanghai, China
Owner/operator: Shenergy Company Ltd. In a nation seeing breakneck growth in its power sector and a drive toward cleaner, more efficient generation, coal remains the backbone. That means hard work is ahead for China in power sector innovation, and a plant in Shanghai is leading the way. There is no country on earth that has […]
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Legal & Regulatory
California’s Bold Move Toward Default Time-of-Use Rates
Rate design is sexy again. On July 3, 2015, the California Public Utilities Commission (CPUC) issued its long-awaited decision altering California’s residential rate structure. Most of the focus on the CPUC’s decision has understandably been on the move from a four-tiered to a two-tiered rate structure and the introduction of a Super-User Electric Surcharge for […]
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CoalTOP PLANTS: Spiritwood Station, Spiritwood, North Dakota
Owner/operator: Great River Energy Recent news has focused on the decline of the coal-fired power industry, but this highly efficient combined heat and power plant offers one template for keeping coal generation viable. Although electricity markets remain challenging, partnering with steam customers can help stabilize revenue. Combined heat and power (CHP), also known as cogeneration, […]
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CommentaryThe Clean Power Plan Is Final: Time to Find the Candles?
On August 3, 2015, the Environmental Protection Agency (EPA) released a much-anticipated suite of regulations, featuring the final Clean Power Plan’s guidelines for carbon dioxide (CO2) emissions from existing power plants under Clean Air Act section 111(d). This package has sparked great interest, and early reactions run the gamut from enthusiastic support to entrenched opposition. […]
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RenewablesOutside-the-Box Renewable Energy Microturbines
Rooftops with arrays of tiny wind-powered microturbines and hydro microturbines generating power as water flows through municipal drinking water systems or the outflow of municipal sewage treatment systems? They’re real. For many in the electric power business, the term “microturbine” conjures up images of small, gas-fired machines, a fad a decade ago that never caught […]
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Renewables
Kuwait to Inject $9.9B into Power Sector to Alleviate Electricity Shortages
Kuwait’s government in August approved the construction of several power plants and desalination facilities to boost its capacity by 3,580 MW. Like its oil- and gas-rich neighbors in the Gulf Cooperation Council region, Kuwait is seeing a power shortage owing to its growing population and economy. With only five power plants, the country has experienced […]
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Coal
The Shifting Fates of Coal Markets, Coal Mining, and Coal Power
Despite media headlines and coal industry hand-wringing, reports of coal’s death have been greatly exaggerated, to adapt Mark Twain’s famous (but misquoted) comment. What’s more, some of the coal sector’s current suffering is the consequence of self-inflicted wounds. Throughout the dog days of summer, the financial pages in dozens of U.S. newspapers have run headlines […]
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CoalFirst Unit of Long-Delayed, Behemoth Medupi Coal Plant Inaugurated
Power-strapped South Africa on Aug. 30 celebrated the inauguration of its first new power plant in 20 years, putting online Unit 6 of Eskom’s long-delayed 4.8-GW Medupi facility. Construction of the $7.89 billion power plant near Lephalale in Limpopo province was begun in 2007, but completion has been paralyzed by a number of mishaps, including […]
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GasGas-Fired DG Showdown: Microturbines, Fuel Cells, or Reciprocating Engines?
If you’re looking to generate distributed power with gas, your options are broader than ever, with a range of efficient, clean-burning technologies to chose from. Knowing which option is the right one depends on a balance of site constraints, fuel supplies, and environmental oversight. When California State University San Marcos (CSUSM), a 14,000-student university north […]
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RenewablesLargest OTEC Facility Inaugurated in Hawaii
One of the world’s largest facilities that harvests energy from ocean temperature gradients began operation this August in Hawaii. The 100-kW ocean thermal energy conversion (OTEC) facility’s inauguration at the Natural Energy Laboratory of Hawaii Authority (NELHA) marks a significant milestone for the technology (Figure 1). One key aspect being tested at the facility is […]
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EnvironmentalDiesel Gensets Aim at the Future
Though newer distributed generation options like microturbines, solar, and batteries have grabbed the headlines, diesel remains the go-to option because of its established technology and reliability. But growing competition and new regulations are threatening its traditional role. Here’s what diesel is doing to stay relevant. If you pay attention to nothing but the headlines in […]
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RenewablesPlans for Giant UK Offshore Wind Farms Reconsidered
In the UK this August, two massive offshore wind developments were thrown into tumult. A consortium that secured the UK government’s approval in early August to build an array of offshore wind farms in the Dogger Bank development off the east coast of Yorkshire said it would proceed with only four projects instead of the […]
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RenewablesLudington Pumped Storage Plant Increases Efficiency to Provide Greater Grid Support
Utility-scale energy storage in the form of pumped water storage has a long history. One of the oldest U.S. plants found itself in need of an upgrade after 40 years of service. Having the right equipment for the job is proving to be essential. With the current power market challenges and increasing amounts of variable […]
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T&DWorld’s First Substation with Eco-Efficient Gas-Insulated Switchgear Commissioned
ABB in August commissioned the world’s first high- and medium-voltage gas-insulated switchgear (GIS) bays that use a new “eco-efficient” gas mixture instead of sulfur hexafluoride, the greenhouse gas that is typically used. The 170/24-kV switchgear bays were supplied to Swiss utility ewz for a new 3 x 50-megavolt-ampere substation (Figure 5) in Zurich, Switzerland, which […]
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Renewables
Hydropower Innovations Make Some Noise
Hydropower is booming, but unless you live in China, Latin America, or Africa, you may have missed it. Global installed capacity of hydroelectric generation has grown by more than 25% over the past decade
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Gas
POWER Digest
Russia and Vietnam Ink Deal for First Ninh Thuan Nuclear Unit. Russia’s nuclear group Rosatom and Vietnam’s state-owned power company Electricity of Vietnam (EVN) on July 30 signed a general framework
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O&MHigh-Performance Synthetic Rope Allows Craneless Wind Turbine Blade Replacement
Replacing blades on a wind turbine is not a simple task. Blades range from 40 to 60 meters in length and can weigh 16 tons or more. Combined with hub heights that can exceed 100 meters and locations that are, by definition, subject to prevailing winds, replacing blades becomes challenging. Add in the cost of […]
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O&MNew 3-D Printing System Creates Precision Shaft Collars
Shaft collars are used as stops or locators on shafts in a wide variety of applications. There are two basic types. One uses a setscrew to lock the collar in place, while the other utilizes a clamp-type collar. Shaft Collar Designs Setscrew collars are the oldest type of shaft collar. These units function by gouging […]
