POWER

Just as we were drafting this commentary, the U.S. Environmental Protection Agency (EPA) issued a new ground-level ozone rule, tightening the standard from 75 to 70 ppb. The projected human health and environmental benefits are substantial. Yet there has been significant concern about tightening the ozone standards because of compliance cost. As it happens, our […]

As the coal industry declines in many places around the world, can the mines it leaves behind be repurposed for cleaner energy projects that benefit multiple stakeholders, including local economies? Several existing and planned projects demonstrate that there may be multiple paths toward that transition. No question, the coal industry in Appalachia, the rest of […]

Generation III nuclear reactors have not shown much ability to overcome the weaknesses of conventional Gen-II light-water reactor technology, offering at best evolutionary approaches. Is there room for a more revolutionary approach? Many parties are exploring new technologies, but it’s impossible to tell which, if any, will succeed. Last August, Andy Revkin, The New York […]

The U.S. Department of Energy (DOE) wants GE to plan and propose a large-scale pilot test of a carbon dioxide capture solution that uses a class of amino silicone compounds used to soften hair or clothing. The

The global market for solar photovoltaic (PV) panels shows no signs of slowing down, with cumulative installed capacity expected to reach 700 GW and annual demand to pass 100 GW by 2020, according to GTM Research. This booming market has spurred manufacturers to introduce a variety of innovations intended to increase panel efficiency and reduce […]

AREVA has installed the first-ever boiling water reactor (BWR) assemblies in the U.S. that features an 11×11 fuel rod array, the French nuclear giant revealed this September. The new fuel design, the ATRIUM 11, has been used to produce power at two nuclear plants since April, though AREVA declined to name the reactors. However, the […]

South Africa reached a milestone this September when it put online its first large-scale project owned by an independent power producer (IPP). The inauguration of the 335-MW Dedisa Peaking Power plant located

Dutch Court Clears Eemshaven Coal Plant for Operation. A Dutch court on Sept. 9 rejected claims that an environmental license issued for RWE’s 1.6-GW Eemshaven coal-fired power plant was issued improperly, clearing the way for the $3.36 billion plant to begin operations at full capacity. Environmental groups have opposed the plant’s location near nature reserves. […]

Once again, a first-of-a-kind technology at a coal-fired power plant that is designed to reduce its greenhouse gas footprint has run into design, operational, and cost problems. This time, it’s Saskatchewan, Canada utility SaskPower’s Boundary Dam Carbon Capture project that’s facing scrutiny. (Earlier this week, an overdue precombustion carbon capture project, Mississippi Power’s Kemper County […]

Will rooftop solar photovoltaics be the most economical way to deploy today’s hottest new generating technology, or will central utility solar PV systems be the best economic bet? Is there a third way? The answer appears to be “yes.” Solar photovoltaic (PV) power has emerged as the hottest new trend in renewable energy generation, primarily […]

The ETH spin-off company Climeworks AG has announced plans to construct and operate an industrial scale CO2 capture plant to be operational by mid-2016. The Oct. 21 announcement said the plant in Hinwil (Canton of Zurich, Switzerland) “has the capacity to capture 900 tons of CO2 from the atmosphere per year.” For comparison, The Carbon […]

In a media briefing this morning on the Clean Power Plan, Janet McCabe, acting assistant administrator for the Environmental Protection Agency’s (EPA’s) Office of Air and Radiation made no announcement of major changes but did note that the final rule will be published in the Federal Register tomorrow, Friday, October 23. That publication starts the […]

Alberta-based Carbon Engineering is inaugurating a pilot project today in Squamish, British Columbia, that will capture carbon dioxide (CO2) directly from the atmosphere. The company, funded by private investors, including Microsoft founder Bill Gates and oil sands financier Murray Edwards, has developed technology based on research conducted by Harvard University–based Professor David Keith’s research groups […]

By now, power industry watchers are familiar with how U.S. interests are reacting to the Environmental Protection Agency’s final release on August 3 of the Clean Power Plan. But what about the rest of the world—especially Europe, which has long been seen as taking a stronger stand on greenhouse gas emissions? Some key European officials […]

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 […]

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 […]

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 […]

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

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 […]

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

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 […]

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 […]

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., […]

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 […]

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%.  […]

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 […]

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 […]

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 […]

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, […]

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 […]