Group items tagged

As traditional energy sources become increasingly rare and expensive, many homeowners are turning to the skies and learning how to harness energy from the sun. Solar cell technology has been around since the 1950s, but technology has improved considerably and at current levels of efficiency it is worth taking the time and effort to consider a Solar Power Home Now Solar cells are also called photovoltaics, or PV, by the boffins. In basic terms, they are made of semi conducing materials, which, when exposed to the sun go through a distinct process. The solar energy separates the electrons from the atoms within the material and the movement of the electrons creates power, or electricity. Thus light (photons) is converted into electricity (voltage).

A Provo firm Thursday launched a project that could foreshadow the next revolution in renewable energy resources for Utah and the rest of the nation. Raser Technologies Inc. marked the completion of a 10-megawatt geothermal power plant with a ribbon-cutting ceremony at the Beaver County facility located in Thermo. It is the first commercial-scale facility to utilize a new technology that allows the plant to generate electricity using geothermal heated water that is at a much lower temperature than was previously possible, said John Fox, general manager of UTC Power Corp.

The (UK) Telegraph has an article on the Vivace tidal / current power device I mentioned recently - Ocean currents can power the world, say scientists The technology can generate electricity in water flowing at a rate of less than one knot - about one mile an hour - meaning it could operate on most waterways and sea beds around the globe. Existing technologies which use water power, relying on the action of waves, tides or faster currents created by dams, are far more limited in where they can be used, and also cause greater obstructions when they are built in rivers or the sea. Turbines and water mills need an average current of five or six knots to operate efficiently, while most of the earth's currents are slower than three knots.

The technology can generate electricity in water flowing at a rate of less than one knot - about one mile an hour - meaning it could operate on most waterways and sea beds around the globe. Existing technologies which use water power, relying on the action of waves, tides or faster currents created by dams, are far more limited in where they can be used, and also cause greater obstructions when they are built in rivers or the sea. Turbines and water mills need an average current of five or six knots to operate efficiently, while most of the earth's currents are slower than three knots.

It was a day when the shift from the past to the future was almost palpable. It started Thursday morning in Berkeley where Green Wombat was moderating a panel of tech luminaries gathered at the University of California's Global Technology Leaders Conference. As Shai Agassi, founder of electric car infrastructure company Better Place, makes the case for harnessing Silicon Valley's technological innovation to Detroit's manufacturing might to create a sustainable car industry, dispatches from the automotive apocalypse roll down my BlackBerry: Ford (F) shares sink to $1.01…GM's (GM) stock falls to its lowest level since World War II…U.S. automakers beg for a bailout…California Congressman Henry Waxman ousts Michigan's John Dingell - the Duke of Detroit - from his 28-year chairmanship of the powerful House Energy and Commerce Committee. Agassi slips out of the conference and an hour later I catch up with him across the Bay at San Francisco City Hall where he and representatives of Governor Arnold Schwarzenegger and the mayors of San Francisco, San Jose and Oakland announce a $1 billion project to build a regional network of electric car charging stations. Better Place has signed similar deals with governments in Israel, Denmark and Australia, but California is the company's first foray into the U.S. market. Planning for the Bay Area network begins in 2009 with construction scheduled to start in 2010 and commercial rollout set for 2012.

U.S. Department of Energy (DOE) Deputy Assistant Secretary for Energy Efficiency David Rodgers today announced the launch of DOE's Zero-Net Energy Commercial Building Initiative (CBI) with establishment of the National Laboratory Collaborative on Building Technologies Collaborative (NLCBT). These two efforts both focus on DOE's ongoing efforts to develop marketable Zero-Net Energy Commercial Buildings, buildings that use cutting-edge efficiency technologies and on-site renewable energy generation to offset their energy use from the electricity grid by 2025.

The presidential candidates are stumping hard. And while energy and environmental issues are getting frequent mentions, both the Republican and Democratic leaders are neglecting one area: geothermal energy. It now makes up just a sliver of the electricity generation pie. But experts at the Massachusetts Institute of Technology say that the technology could have far wider applications and be especially useful in times of high energy prices and carbon constraints. Not only is it much cleaner than fossil fuels but it also provides a continuous flow of energy -- all at a competitive prices.

Geothermal Energy We have found the company that is ready to lead the way on this exciting new energy technology. The company is one of the world's leading vertically integrated companies in the field of geothermal energy. Geothermal energy is one of the cleanest, most abundant sources of energy on the planet and now is the time to know as much as possible about this great new investment. This companies technologies and its subsidiaries engage in the geothermal and recovered energy power business. Before we get into the details of this business, lets take a closer look at what geothermal energy really is.

Energy Future: Think Efficiency differs from other energy efficiency reports in its emphasis on scientific and technological options and analysis. Developed by a panel of leading experts in energy policy with backgrounds in physics, engineering, economics, and policy, Energy Future: Think Efficiency examines what works, what can work soon, and what is feasible for the future. Based on emerging technologies, this report targets which research and development gives America the best return for its dollars.

The thin film solar field is still a hot bed of activity - Technology Review has a post on a prototype cell that uses photonic crystals - Efficient Thin-Film Solar Cells. Researchers at MIT have unveiled a new type of silicon solar cell that could be much more efficient and cost less than currently used solar cells. Materials science and engineering professor Lionel Kimerling and his colleagues presented results of the first device prototype at a recent meeting of the Materials Research Society in Boston. The design combines a highly effective reflector on the back of a solar cell with an antireflective coating on the front. This helps trap red and near-infrared light, which can be used to make electricity, in the silicon. The research team is licensing similar technology to StarSolar, a startup in Cambridge, MA.

While much attention on renewables in recent years has focussed on solar and wind technologies, awareness has been growing around the enormous energy generating potential of the Earth's oceans. A 2005 report from the Electric Power Research Institute stated that wave power properly and effectively harnessed, would likely have minimal environmental impact, and be much less visible on the landscape, than competing technologies. At the same time, waves possess the advantage of being more predictable than either wind or solar, which in principle makes ocean power a more reliable source of energy.

The Guardian has a report on some new tidal power technology from a company in Wales inspired by ship propellers and wind turbines - Tidal power gets a boost from propeller and wind turbine techonology. Propellers on ships have been tried and tested for centuries in the rough and unforgiving environment of the sea: now this long-proven technology will be used in reverse to harness clean energy from the UK's powerful tides. The tides that surge around the UK's coasts could provide up to a quarter of the nation's electricity, without any carbon emissions. But life in the stormy seas is harsh and existing equipment - long-bladed underwater wind turbines - is prone to failure.A Welsh renewable energy company has teamed up with ship propulsion experts to design a new marine turbine which they believe is far more robust.

From March 4-6, world leaders in the renewable, green, clean technology and energy efficiency sectors will gather in Bangalore for Green Energy Summit 2009. The summit is a highly efficient forum for varied stakeholders from solar, wind, biomass, IT, transport, construction, aviation, nanotechnology and biotechnology to bring together the business and science of the most important and relevant Green Energy and Clean technologies (http:// www.greenenergysummit.com).

Wales has laid down the gauntlet to Scotland and Northern Ireland in the race to develop tidal energy technology. Last week, Cardiff-based Tidal Energy Limited (TEL) announced plans for a 1MW trial installation at the Ramsey Sound in Pembrokeshire, South Wales. The company hopes its DeltaStream horizontal turbines will be in the water by summer 2010, making them Wales' first signifcant tidal install. TEL says its 12-month test project will use technology that's proven to be grid-compliant, enabling it to connect to the national grid and earn an income from generated power.

# Responsible people see the very urgent need to do something to help our Global environment recover from our excesses. # Do we want our children to be able to breathe clean air and be able to enjoy Nature at its finest? # How can we immediately affect the Environment in a good way and in the shortest possible time? # Most experts agree that the destruction of fossil fuels [ coal, oil, gas etc ] creates massive amounts of harmful materials and that Alternative Energy sources must be found. They suggest alternatives to destroying the Planets Fossil Fuels would be one of the biggest steps we could take on the path back to a cleaner and healthier Planet. # Recent research has forced huge strides forward in Alternative Energy sources such as Wind and Solar Power technology, and in particular making that technology available to the average person for home use. After the initial costs of installation, annual bills could fall to less than 10% of a normal fuel bill!

The Scottish Government has created one of the biggest international innovation prizes in history - a £10 million challenge for advances in wave and tidal energy. At a ceremony this week in historic Edinburgh Castle, details of the 'Saltire Prize' were revealed to leading scientists, environmentalists and potential entrants after being finalised by a panel of international experts who comprise the prize Challenge Committee. Dr Anne Glover, Scotland's Chief Scientific Adviser and Chair of the Challenge Committee, said the Saltire Prize will be awarded to the team that can demonstrate in Scottish waters a commercially viable wave or tidal energy technology that achieves a minimum electrical output of 100GWh over a continuous two year period using only the power of the sea and is judged to be the best overall technology after consideration of cost, environmental sustainability and safety.

Siemens Building Technologies is sponsoring a Virtual Trade Show on December 10th and 11th from 8:00am - 6:00pm CST. This Virtual Energy Forum is a two day online-only event focused on how leading companies can adopt better energy management practices to cut costs, while at the same time adopting clean energy alternatives -- presenting alternative energy technologies, policies, and best practices in a live, interactive environment. The event is designed to meet the needs of corporate energy executives in a way that is not possible with physical events, webinars or other means.

One of the most promising technologies available in sustainable energy is solar panels. As the technology matures, so does the efficiency of the panels.

CleanTechnica has a post from San Francisco mayor Gavin Newsom on the city's proposal to build a wave power plant offshore - Wave Energy to Bring Power and Jobs to San Francisco. Today, San Francisco took a meaningful step toward turning the promise of renewable ocean energy into reality. We submitted a preliminary permit application to the federal government to develop a wave power project off our coast that we believe can generate between 10 to 30 megawatts of energy, with potential of up to 100 megawatts. When this project is fully operational, upwards of 100 jobs could be created in San Francisco. Ocean power is a true "game changer" in the area of renewable energy. When wave and tidal power technologies reach commercial scale, they are expected to be able to provide thousands of megawatts of power to our coastal communities, dramatically green our energy portfolios and create thousands of new American jobs. In San Francisco, we've been doing our part to spur these technologies by aggressively advancing tidal and wave power pilot projects. We are 100% committed to this challenge. Wave power is not a new concept. In 1887, San Francisco Mayor Adolph Sutro recognized the power of San Francisco's waves and built a wave catch-basin to harness the ocean's power. Over the next century wave power development took a backseat to our dependence on oil, with oil platforms built along our coasts to feed our oil addiction.

The world needs a "revolution" in science and technology to solve global warming, says Energy Secretary Steven Chu. Chu, a Nobel Prize-winning physicist, made the remarks in today's New York Times. The article was short on specifics, but Chu, former director of Lawrence Berkeley National Laboratory, said Nobel-level breakthroughs were needed in electric batteries, solar power and crops that could be turned into fuel. "Science and technology can generate much better choices," Chu, a long-time proponent of alternative energy development, told the newspaper. "It has, consistently, over hundreds and hundreds of years." Among the points he made: