News articles on clean energy

Mongabay.com news articles on clean energy in blog format. Updated regularly.

China aims for 100 gigawatts of wind power by 2020

(04/29/2008) China aims to expand its wind power generating capacity to 100,000 megawatts by 2020, more than doubling the current world's installed capacity, according to the Shanghai Daily and The Wall Street Journal's Environmental Capital blog.

Global warming solutions are harming indigenous people, says U.N.

(04/02/2008) Large-scale solutions intended to help mitigate global warming are harming the very indigenous people who are likely to bear the brunt of climate change, warned the United Nations University (UNU) at a conference in Darwin, Australia.

Mutant algae may fuel cars

(04/02/2008) Chemically-modified algae may become key to the production of hydrogen gas which seen by researchers as a next-generation fuel source.

Arizona seeks to become the 'Persian Gulf' of solar energy

(02/22/2008) With a Spanish company's plans to dramatically expand solar capacity in the desert southwest of Phoenix, Arizona Governor Janet Napolitano said Arizona could become the "Persian Gulf of solar energy," according to the Associated Press.

Private sector pumping hundreds of billions into cleantech

(02/21/2008) The private sector is "pumping hundreds of billions of dollars" into cleaner and renewable energies, says a new publication released yesterday by the United Nations Environment Programme (UNEP).

New World Record for Solar-to-Grid Conversion Efficiency

(02/13/2008) Sandia National Laboratories and Stirling Energy Systems (SES) set a new solar-to-grid system conversion efficiency record by achieving a 31.25 percent net efficiency, nearly a 2 point gain of the previous record of 29.4 percent set in 1984.

Biofuels are worsening global warming

(02/07/2008) Converting native ecosystems for production of biofuel feed stocks is worsening the greenhouse gas emissions they are intended to mitigate, reports a pair of studies published in the journal Science. The studies follow a series of reports that have linked ethanol and biodiesel production to increased carbon dioxide emissions, destruction of biodiverse forest and savanna habitats, and water and air pollution.

Carbon tax would make China greener and reduce warming risks

(02/07/2008) Driven by booming economic growth and rapid urbanization, China's carbon dioxide emissions are surging. At the same time, forecasts suggest climate change will have an immense impact on the country, with rising sea levels projected to swamp key industrial areas and diminished rainfall reducing agricultural output. Given this outlook, a new policy paper published in Science argues that China will need to embark on a cleaner path to growth, one that is less dependent on coal. The authors say that international assistance in the form of carbon funds could help persuade Chinese leadership to move towards more environmentally-friendly energy technologies.

Indonesia seeks to cut fuel subsidies via biofuels

(01/15/2008) Biofuels will make up 10 percent of Indonesia's fuel transport consumption by 2010 under a plan announced Monday by a senior government official, according to Reuters. The initiative could ease the economic impact of fuel subsidies - currently some of the highest in the world - in Indonesia, while boosting demand for locally produced bioenergy crops including palm oil, jatropha, sugar cane and cassava.

E.U. may ban palm oil biodiesel

(01/15/2008) The E.U. may ban imports of certain biofuel feedstocks that damage the environment, reports The New York Times. Environmentalists say some biofuels like palm oil are driving the destruction of biologically-rich rainforests and may produce more emissions than conventional fossil fuels.

Switchgrass a better biofuel source than corn

(01/07/2008) Switchgrass yields more than 540 percent more energy than the energy needed to produce and convert it to ethanol, making the grassy weed a far superior source for biofuels than corn ethanol, reports a study published in Proceedings of the National Academy of Sciences (PNAS).

New process turns chicken fat into biodiesel

(12/20/2007) Chemical engineers at the University of Arkansas have devised a way to convert chicken fat into biodiesel fuel. The process advances efforts to "develop commercially viable fuel out of plentiful, accessible and low-cost feedstocks and other agricultural by-products," according to the researchers.

Wind could supply baseline electrical power

(11/22/2007) Wind power, long considered to be as fickle as wind itself, can be groomed to become a steady, dependable source of electricity and delivered at a lower cost than at present, according to scientists at Stanford University.

Carbon-negative bioenergy to cut global warming could drive deforestation

(11/06/2007) A proposed mechanism for generating carbon-negative bioenergy -- an energy source that reduces atmospheric carbon dioxide levels -- could drive large-scale deforestation in the tropics and undermine efforts to conserve forests for carbon offsets says a biofuel expert.

Clean energy will improve health of the world's poor

(09/12/2007) Clean energy will help people live longer and healthier lives reports a study published in The Lancet. The research recommends a switch from fossil fuels towards renewable energy and improved access to electricity for the world's poor.

Wind power takes a toll on migratory bats

(09/12/2007) The danger of wind turbines to birds has long been known and well documented. Most recently several studies and articles have attempted to place the level of bird casualties in perspective: "More birds killed by cats than wind turbines". But lesser known--and lesser studied--is the effect wind turbines have on bat populations. Collisions between groups of bats and wind turbines have been observed at numerous turbines in America, Australia, and Europe. While these fatalities, sometimes killing hundreds of bats, have been seen for years, their cause remains unknown.

Guidelines to ensure biofuels production won't hurt the environment

(08/30/2007) Environmentalists have long seen biofuels as a means to improve the sustainability of transportation and energy use since they are a renewable source of energy that can be replenished on an ongoing basis. Further, because biofuels are generally derived from plants, which absorb carbon from the atmosphere as they grow, biofuel production offers the potential to help offset carbon dioxide emissions and mitigate climate change. Nonetheless, in recent years, there has been considerable backlash against biofuels, which are increasingly viewed as a threat to the environment. Green groups now point to large-scale land conversion for energy crops, higher food prices, and a spate to studies that suggest net emissions from corn ethanol are little better than those from fossil fuels, to caution that biofuels can cause more problems than they address.

Miscanthus bests switchgrass as biofuel source

(07/11/2007) In a side-by-side comparison, miscanthus (Miscanthus x giganteus) grass has been shown to be a more productive bioenergy source than switchgrass (Panicum virgatum), according to research presented at the annual meeting of the American Society of Plant Biologists in Chicago.

Inflatable concentrators may cut cost of solar below conventional power plants

(07/08/2007) Cool Earth Solar, a Livermore, California-based company developing an innovative way for capturing solar energy, has merged with Radiant Energy, a developer and owner of renewable and clean energy power plants including solar, geothermal, and hydroelectric. Rob Lamkin, CEO of Radiant Energy, says the merger will help ramp up the technology, which uses inflatable solar concentrators to minimize use of refined silicon, a costly ingredient in solar cells. Lamkin says the technology could dramatically reduce the cost solar energy, bringing it below the cost natural gas-fired power plants.

$100 billion invested in renewable energy in 2006

(06/20/2007) $100 billion poured into renewable energy and energy efficiency in 2006, a 25 percent jump from 2005, reports a new analysis by the UN Environment Programme (UNEP).

First U.S. offshore wind farm wins preliminary approval

(05/23/2007) The first offshore wind farm in the United States won preliminary approval Tuesday from a panel of Delaware state officials. According to published reports, four Delaware state agencies ordered Delmarva Power, an electric utility, to buy wind-generated power from Bluewater Wind, the wind farm's developer.

Plan to bring lions, elephants to U.S. excludes Africans

(05/22/2007) Writing in the June 2007 Scientific American one of the scientists who helped put forth a radical proposal to reintroduce historical megafauna -- including camels, cheetah, elephants, and lions -- revisits the scheme, reviewing its basic points and refuting some of the criticism the plan received from the general public and other conservation biologists.

Sugar could power hydrogen fuel cars says VTU researcher

(05/22/2007) Sugary carbohydrates could be used to produce low-cost hydrogen to power fuel cells report researchers writing in the May 23 issue of PLoS ONE, the online, open-access journal from the Public Library of Science ( www.plosone.org)

Ancient Amazonian technology could save the world

(05/17/2007) Terra preta, the ancient charcoal-based soil used by ancient Amazonians to create permanently fertile agricultural lands in the rainforest, is getting serious consideration as a means to fight global warming and meet domestic energy demand, reports an article in Scientific American.

Wind energy has promise, but brings concerns, reports study

(05/03/2007) While wind-generated energy has the potential to produce clean electricity without carbon dioxide emissions, more research is needed to understand its impact on wildlife says a new report from the National Research Council, a private, nonprofit institution that provides science and technology advice under a congressional charter.

Ethanol may be greener but have higher health cost

(04/18/2007) Widespread burning of ethanol as fuel may increase the number of respiratory-related deaths and hospitalizations relative to gasoline, according to a new study by Stanford University atmospheric scientist Mark Z. Jacobson. The report comes as mounting environmental concerns cloud the benefits of using ethanol as a green alternative to fossil fuels.

Palo Alto aims to cut CO2 emissions 80% by 2050

(04/15/2007) The city of Palo Alto, California aims to cut greenhouse gas emissions significantly in coming years, joining a growing number of U.S. cities that have pledged to cut emissions by 80 percent by 2050. The goal, set forth in Green Ribbon task force report last year, was discussed by a panel of experts convening at Stanford University Sunday.

U.S. can cut oil imports to zero by 2040, use to zero by 2050

(03/29/2007) The United States could dramatically cut oil usage over the next 20-30 years at low to no net cost, said Amory B. Lovins, cofounder and CEO of the Colorado-based Rocky Mountain Institute, speaking at Stanford University Wednesday night for a week-long evening series of lectures sponsored by Mineral Acquisition Partners, Inc.

Air pollution may reduce wind power, rainfall

(01/22/2007) Aerosolized particles and other pollution produced from vehicle exhaust may reduce wind speeds near Earth's surface, resulting in less wind for power generation as well as reduced precipitation, according to a study published in the December 27th online edition of Geophysical Research Letters by researchers at Stanford University and NASA.

Geothermal energy could cut U.S. oil demand

(01/22/2007) Geothermal energy could eventually power some 25 million homes across the United States at a cost of $40 million per year according to a Department of Energy sponsored study released Monday. Lead by Jefferson Tester, a professor at MIT and lead author, the report argues that unlocking the heat stored in Earth's crust could improve American energy security while reducing emissions greenhouse gases blamed for global warming.

China to build world's largest solar power plant

(11/21/2006) China plans to build the world's largest solar power station in the northwestern province of Gansu according to a report from Xinhua, China's state news agency. Construction of the 100 megawatt facility will take five years and cost 6.03 billion yuan ($766 million).

Renewable sources could power 25% of U.S. energy needs by 2025

(11/13/2006) Renewable energy sources could supply one quarter of America's electricity and motor vehicle fuel needs by 2025 according to a new study from RAND, a nonprofit research organization. Currently six percent is energy used in the United Stats comes from renewable sources like solar, biomass, hydroelectric, tidal, wind, and geothermal.

Solar Energy Powers Mainland China's Richest Man

(10/12/2006) The largest private fortune in mainland China may belong to Shi Zhengrong, the founder of the China's largest producer of photovoltaic equipment used to convert sunlight into eletricity, according to an article in today's edition of The Wall Street Journal.

US has low-cost alternatives to oil; peak oil frenzy and human-induced climate change avoidable says Columbia University

(05/14/2006) Surging oil prices have fueled calls for the United States to develop new sources of affordable and secure domestic energy. While renewable energy -- especially biofuels, wind power, and solar technologies -- is an area of particular interest, researchers from the Earth Institute at Columbia University say that the U.S. already has relatively low-cost alternatives to imported oil, including coal, tar sands, and oil shale. These resources can be extracted and used at a lower cost to the environment than some might expect. In a report published in the most recent issue of Brookings Papers on Economic Activity, Klaus S. Lackner and Jeffrey D. Sachs argue that "coal alone could satisfy the country's energy needs of the twenty-first century." They say that "coal liquefaction, or the process of deriving liquid fuels from coal, is already being used in places and with expanded infrastructure could provide gasoline, diesel fuel and jet fuel at levels well below current prices." Further, Sachs and Lackner suggest that "environmental constraints such as increased carbon dioxide emissions arising from greater use of coal and other fossil fuels could be avoided for less than 1 percent of gross world product by 2050," a sum far less than others have estimated.

Wind turbines could power China says expert

(03/09/2006) Wind could become China's second-largest source of electricity according to a Chinese energy expert. Wang Weicheng, an energy professor at Tsinghua University in Beijing, told reporters that China has the potential to install up to 100 gigawatts of wind power. Wang's comments come as China has been aggressively expanding its interests in renewable energy sources including wind, solar, biofuels, tidal, and small hydroelectric dams.

California adopts massive solar energy project

(01/13/2006) The California Public Utilities Commission approved a $2.9 billion program to make the state one of the largest producers of solar power in the world.

Businesses can now host solar energy project without up-front costs

(12/21/2005) 3 Phases Energy Services announced today its launch of a new service, "Daylight Savings", a model for financing large-scale solar photovoltaic (PV) projects. Daylight Savings allows businesses and institutions to host onsite photovoltaic systems while eliminating all up-front capital requirements and providing a long-term hedge against fossil fuel prices.

Scandinavians mix sea and river water to generate electricity

(12/19/2005) Two Scandinavian groups have invented devices that generate electricity by mixing sea and river water. The technologies work based on the difference in salt concentration between ocean water and freshwater.

Making wind power less deadly for birds

(12/15/2005) High oil prices and concern over climate change are driving interest in renewable energy technologies. All types of potential power sources -- not limited to the sun, ocean tides and waves, raw sewage, and even insects -- are the focus of media reports, while governments and industry scramble to announce their grand plans for adopting green energy.

California plans $3 billion for solar energy projects

(12/13/2005) Tuesday the California Public Utilities Commission announced an ambitious program to expand the market for solar power, proposing to provide $2.8 billion of incentives toward solar development over the next 11 years.

China to add wind power capacity

(08/15/2005) China plans to construct its first offshore wind power complex next year in hopes of easing chronic electricity shortages, the official Xinhua News Agency reported Monday.

China funds massive palm oil plantation in rainforest of Borneo

(08/12/2005) Plans to create the world's largest palm oil plantation along Indonesia's mountainous border with Malaysia could have a devastating impact on the forests, wildlife and indigenous people of Borneo, warns World Wildlife Fund.

Renewable energy in China, a strategic future?

(08/02/2005) China's failed bid for American petroleum firm Unocal may prompt it to further focus on its development of alternative energy sources.

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