Group items tagged

WASHINGTON (AP) - An Energy Department report concludes that wind turbines can produce a fifth of the nation's annual electricity needs within about two decades. That is about the same share of electricity produced today by nuclear power. Wind energy today accounts for only about 1 percent of the nation's electricity. The government report to be released Monday said by 2030 wind energy could account for 300,000 megawatts of power, or about 20 percent of the total electricity generated.

The LA Times has an article on a new report noting that wind power could meet the entire electricity demand in the US - Wind turbines could more than meet U.S. electricity needs, report says. Wind turbines off U.S. coastlines could potentially supply more than enough electricity to meet the nation's current demand, the Interior Department reported Thursday. Simply harnessing the wind in relatively shallow waters -- the most accessible and technically feasible sites for offshore turbines -- could produce at least 20% of the power demand for most coastal states, Interior Secretary Ken Salazar said, unveiling a report by the Minerals Management Service that details the potential for oil, gas and renewable development on the outer continental shelf. The biggest wind potential lies off the nation's Atlantic coast, which the Interior report estimates could produce 1,000 gigawatts of electricity -- enough to meet a quarter of the national demand.

Technology Review has an update on cheap, energy efficient OLED lighting - Ultra-Efficient Organic LEDs. An organic light-emitting diode (OLED) developed in Germany has the potential to produce the same quality of white light as incandescent bulbs but with power efficiencies considerably better than even fluorescent lighting. The prototype OLED could emerge as an ultra-efficient light source for displays and general lighting, says Sebastian Reineke, who led the research at the Institute for Applied Photophysics, in Dresden, Germany. The long-term goal is to fabricate the device using conventional low-cost roll-to-roll printing. In recent years, many countries have begun looking to switch from incandescent lighting to compact fluorescent bulbs because the latter are so much more energy efficient. There has also been a lot of interest in using light-emitting diodes (LEDs) for displays and general lighting, again because of the potential energy savings they offer. But with both fluorescent and LED lighting, the quality of white light produced has always left something to be desired. Fluorescent lighting can make people appear unhealthy because less red light is emitted, while most white LEDs on the market today have a bluish quality, making them appear cold.

Green building of the week from Inhabitat is this vertical farm proposed for Vancouver - Amazing Skyscraper Farm for Vancouver. I'll believe vertical farms work when I see it, but I'd like to see one tried, purely for the sake of showing how successful they can (or can't) be. Vertical farms are one of our favorite future-forward concepts for creating sustainable cities. Providing locally-grown produce and food will not only help us reduce our carbon emissions significantly, but also help us become healthier. Romses Architects recently came up with an amazing concept for a vertical farm in Vancouver as part of the City's 2030 Challenge. Complete with a tower for growing fruits and vegetables, a livestock grazing plane, a boutique dairy farm, commercial space, transit lines, renewable energy and more, the Harvest Green Tower has the potential to be a food growing, energy producing, living, breathing sustainable transit hub.

A report by the group ForestEthics estimates that destroying forests to make paper for junk mail releases as much greenhouse gas pollution as 9 million cars. Another way to look at it: Junk mail produces as much pollution as seven U.S. states combined, or as much as heating 13 million homes each winter. While the estimates may or may not be accurate, the point is indisputable: Junk mail is a waste. (To most people, it's an annoying part of the trip to the mailbox, anyway.)

Rare earth elements (REE) such as scandium, yttrium and 15 other minerals are sought after for their unique technology applications, but their scarcity means those countries lucky enough to contain them hold significant sway over global supply. Mining-technology.com profiles the eight biggest rare earth producers based on latest production and reserve data.

Most of the countries are headed to be in number one position. More number of industries means growth in the economy. But what about the waste produced by these industries, and its effect to the environment. People have ignored the environment for a very long time.Waste-to-Energy is using modern biochemical technologies and combustion method to recover energy.

Carbon auditors will be needed to make sure that the output from businesses and other major producers are within appropriate limits.

Cleantechnica reports that the UK is experimenting with smart fridges (fridges that adjust their power consumption dynamically based on grid load) - UK Giving Away "Intelligent Fridges". Live in the UK? You may be the lucky recipient of a free "intelligent" refrigerator. 3,000 fridges that adapt power usage based on the demands of the electrical grid will be given away by the government next year. According to a report from the UK Department of Energy and Climate Change, the dynamic demand fridges could potentially save 2 million tons of carbon each year and £222m. In addition to saving energy, the dynamic demand fridges will also help ease the transition to intermittently produced renewable energy by reducing the minimum amount of power necessary to keep the electrical grid stable- in other words, the fridges limit the base amount of fossil fuels used in energy creation.

New Study: 10 billion tonne saving in CO2 possible with wind energy by 2020: Wind power is key technology to prevent dangerous climate change. Wind power could produce 12% of the world's energy needs and save 10 billion tones of CO2 within 12 years, according to a new report published today. The 'Global Wind Energy Outlook 2008', published by the Global Wind Energy Council (GWEC) and Greenpeace International, looks at the global potential of wind power up to 2050 and found that it could play a key part in achieving a decline in emissions by 2020, which the IPCC indicates is necessary to avoid the worst consequences of climate change.7By 2020, wind power could save as much as 1.5 billion tonnes of CO2 every year, which would add up to over 10 billion tonnes in this timeframe. The report also explains how wind energy can provide up to 30% of the world's electricity by the middle of the century.

The development of geothermal energy in Australia is a step closer with the launch of an industry framework today. Geothermal energy is produced by harnessing the heat of so called 'hot rocks' buried kilometres underground. The framework has brought together industry, researchers and governments to work out how to make geothermal a genuine baseload power alternative.

Scientists have found that a polymer material is an excellent catalyst in a process to produce hydrogen fuel using sunlight and water. The material meets the basic requirements for an ideal catalyst -- including being abundant, easy to work with, and non-toxic -- and could help this "green" alternative-energy production method become mainstream. Creating hydrogen gas by splitting water (H2O) molecules with solar energy is a promising way of generating hydrogen fuel, which, by either being burned directly or used in fuel cells, can power many types of vehicles, including automobiles, buses, and even airplanes. The study's corresponding scientist is Xinchen Wang, a chemist affiliated with the Max-Planck Institute of Colloids and Interfaces in Potsdam, Germany, and Fouzhou University in Fouzhou, China.

Reporting from Reno -- Not far from the blinking casinos of this gambler's paradise lies what could be called the Biggest Little Power Plant in the World. Tucked into a few dusty acres across from a shopping mall, it uses steam heat from deep within the Earth's crust to generate electricity. Known as geothermal, the energy is clean, reliable and so abundant that this facility produces more than enough electricity to power every home in Reno, population 221,000.

Olive stones can be turned into bioethanol, a renewable fuel that can be produced from plant matter and used as an alternative to petrol or diesel. This gives the olive processing industry an opportunity to make valuable use of 4 million tonnes of waste in olive stones it generates every year and sets a precedent for the recycling of waste products as fuels. Researchers from the Universities of Jaén and Granada in Spain show how this can be achieved in a study published in the latest edition of the Society of Chemical Industry's (SCI) Journal of Chemical Technology & Biotechnology.