Designers of buildings typically have no choice but to use black or bluish-gray colored solar panels. With the help of thin-film technologies, however, researchers in Germany have now added color to solar cells. Optics specialists have changed physical thickness of the transparent conductive oxide layer, modifying its refractive index.
Theoretically, hydropower can step in when wind turbines go still, but barriers to this non-polluting resource serving as a backup are largely policy- and regulation-based, according to recent research. Hydroelectric dams are controlled by guide curves that account for drinking water and droughts. They cannot simply release water to meet some electricity demand or hold back water when electricity is in low demand.
Hydrogen fuel cells are already powering mobile lighting systems, forklifts, emergency backup systems and light-duty trucks, among other applications. Now, researchers at Sandia National Laboratories have found that hydrogen fuel cells may be both technically feasible and commercially attractive as a clean, quiet and efficient power source for ships at berth, replacing on-board diesel generators.
By rerouting the metabolic pathway that makes fatty acids in E. coli bacteria, researchers at Harvard University have devised a new way to produce a gasoline-like biofuel. According to the scientists, who are tweaking metabolic pathways in bacteria, new lines of engineered bacteria can tailor-make key precursors of high-octane biofuels that could one day replace gasoline.
The Nevada Senate has endorsed NV Energy Inc.'s plan to retire its coal-fired plants and pave the way for the state's biggest electrical utility to transition to more renewable sources. After several revisions, SB123 was approved unanimously Wednesday and now moves to the Assembly.
A new analysis shows that the nation's land and water resources could likely support the growth of enough algae to produce up to 25 billion gallons of algae-based fuel a year in the United States, one-twelfth of the country's yearly needs. The findings come from an in-depth look at the water resources that would be needed to grow significant amounts of algae in large, specially built shallow ponds.
The solar industry in Georgia is pushing a power monopoly to expand its use of solar energy as it plans to meet the state's electricity needs over the next two decades. State utility regulators heard testimony Tuesday on the energy plans from Southern Co. subsidiary Georgia Power, which must submit new plans every three years.
A new study has identified two unique methods for storing energy using wind power. A team from Pacific Northwest National Laboratory and Bonneville Power Administration has located two sites in Washington that could serve as multi-megawatt facilities. They say power for about 85,000 homes each month could be stored in porous rocks deep underground for later use.
The Environmental Protection Agency has dramatically lowered its estimate of how much of a potent heat-trapping gas leaks during natural gas production. This shift has major implications for a debate that has divided environmentalists, which is whether the recent boom in fracking helps or hurts the fight against climate change.
On Monday, scientists with IBM Research, Airlight Energy, and ETH Zurich officially launched plans to develop an affordable photovoltaic system capable concentrating solar radiation 2,000 times and converting 80% of the incoming radiation into useful energy. The system is based on a low-cost, large dish-like concentrator and micro-channel cooled high performance photovoltaic chips suitable for mass-production.
A U.N. nuclear watchdog team said Japan may need longer than the projected 40 years to decommission its tsunami-crippled nuclear plant and urged its operator to improve plant stability. Damage at the Fukushima Dai-ichi plant is so complex that it is "impossible" to predict how long the cleanup may last.
Some U.S. government officials and experts have strong concerns about Japan's plan to operate a nuclear fuel reprocessing plant in Aomori to retract plutonium while most of the nation's reactors remain shut down, a member of the government's Japan Atomic Energy Commission said Monday. Japan possesses a large amount of plutonium but prospects for consuming it remain unclear as most of Japan's nuclear reactors are idled.
A local power failure in Ohio ten years ago caused a series of cascading power failures that resulted in a massive blackout. Such blackouts could be prevented in the future, thanks to a new piece of equipment developed by engineering researchers at the University of Arkansas. The device regulates or limits the amount of excess current that moves through the power grid when a surge occurs.
Technology used in downhole applications—such as geothermal or oil-well monitoring—must endure punishing conditions, from very high temperatures to tremendous pressures. Finding a solder material that can perform in these harsh environments is a constant challenge. Researchers have recently repurposed a solder alloy once intended defense applications that has all the right properties for well tasks.
Sandia National Laboratories is developing a suite of complementary technologies to help the emerging algae industry detect and quickly recover from algal pond crashes, an obstacle to large-scale algae cultivation for future biofuels. The research draws upon Sandia's longstanding expertise in microfluidics technology, its strong bioscience research program and significant internal investments.
GE and Lufkin Industries Inc. announced this week a joint agreement whereby GE will acquire Lufkin Industries Inc., a leading provider of artificial lift technologies for the oil and gas industry and a manufacturer of industrial gears, for approximately $3.3 billion. The move accelerates GE’s growth in artificial lift with solutions for a wider variety of well types.
Scientists this week described technology that accelerates microalgae’s ability to produce many different types of renewable oils for fuels, chemicals, foods and personal-care products within days using standard industrial fermentation. On highlight was Solazyme, which has achieved more than 80% oil within each individual cell of microalgae at the commercial scale.
Electric cars are still an iffy proposition for most consumers because of the limited range offered by lithium-ion battery. A promising avenue of research is the lithium-sulfur battery, which is significantly more powerful and less expensive than the better-known lithium-ion battery. Although their short lifespan has made them unsuitable before now, this may be about to change if development work in Germany is successful.
A carbon price of between $50 and $100 per ton of carbon dioxide would make coal-fired and gas-fired power less economical than renewable electricity, a University of New South Wales study shows. The study shows that fossil-fueled power stations in Australia’s National Electricity Market could be phased out and replaced economically and reliably with commercially available renewable energy technologies by increasing the carbon price to this “medium” level.
The construction of the photovoltaic power industry since 2000 has required an enormous amount of energy, mostly from fossil fuels. The good news is that the clean electricity from all the installed solar panels has likely just surpassed the energy going into the industry's continued growth, Stanford University researchers find.
An innovative new process that releases the energy in coal without burning—while capturing carbon dioxide, the major greenhouse gas—has passed a milestone on the route to possible commercial use, scientists are reporting. Their study in the ACS journal Energy & Fuels describes results of a successful 200-hour test on a sub-pilot scale version of the technology using two inexpensive but highly polluting forms of coal.
Hydraulic fracturing may soon be approved for the state of New York. However, a new study finds that it is technically and economically feasible to convert New York's all-purpose energy infrastructure to one powered by wind, water, and sunlight. The authors say that overall switch would reduce New York's end-use power demand by about 37% and stabilize energy prices.
Two years after the nuclear crisis in Japan, the top U.S. regulator says American nuclear power plants are safer than ever, though not trouble-free. A watchdog group calls that assessment overly rosy and has issued a scathing report saying nearly one in six U.S. nuclear reactors experienced safety breaches last year, due in part to weak oversight.
For many coastal dwellers, seaweed washed up on the shore is nothing but a nuisance. But this raw material has proven itself capable of keeping buildings well insulated. Washed up on shore, it is generally regarded as a waste product and ends up as landfill. Together with industry partners, researchers in Germany have succeeded in turning it into insulation.
A technology that will allow widespread adoption of plug-in electric vehicles without negatively impacting the electrical grid is the subject of a commercial license agreement between Battelle and AeroVironment, Inc., of Monrovia, Calif. The technology may also ultimately result in lower costs for plug-in electric vehicle owners.