Group items tagged

Fred Pearce has framed his latest opinion piece in Yale Environment 360 as one about Europe fiddling around with its climate change commitment (with German Chancellor Angela Merkel as lead violin), while the US is poised to reengage with the world under the Obama administration. What it's really about though is what the US would need to do to take that lead, and it all has to do with renewable energy. Though some of this may be recap for avid TreeHugger readers, it's worth repeating: Stephen Chu Appointment a Good Sign Beyond his stated commitment to dealing with climate change during the campaign, Pearce indicates that the appointment of Stephen Chu as energy secretary is the real sign that the US could soon lead the renewable energy/climate change race. Not only has he done pioneering research on solar power, energy efficiency and cellulosic biofuels at the Lawrence Berkeley National Laboratory, he's also an advocate of a nationwide expansion of the electric grid to bring renewable energy from where it's most easily generated (west of the Mississippi) to where the greatest demand is (east of the river).

After emerging in 2006 from 15 years of hibernation, the solar thermal power industry experienced a surge in 2007, with 100 megawatts of new capacity coming online worldwide. During the 1990s, cheap fossil fuels, combined with a loss of state and federal incentives, put a damper on solar thermal power development. However, recent increases in energy prices, escalating concerns about global climate change, and fresh economic incentives are renewing interest in this technology.

Solar Energy Industries Association (SEIA) recently released its 2008 U.S. Solar Industry Year in Review, highlighting a third year of record growth. The report notes that 1,265 megawatts (MW) of solar power of all types were installed in 2008, bringing total U.S. solar power capacity up 17 percent to 8,775 MW. The 2008 figure included 342 MW of solar photovoltaic (PV), 139 MWTh (thermal equivalent) of solar water heating, 762 MWTh of pool heating and an estimated 21 MW of solar space heating and cooling.

It seems cruelly ironic that tapping into Southern Nevada's vast solar energy potential could slowly drain our desert. Traditional solar thermal power plants that use wet cooled technology require millions of gallons of water over time in the process of converting solar rays into clean, renewable power for our community. Southern Nevada received some good economic news last month when Solar Millennium, a division of one of the world's top solar power generators, announced new plans to use a "dry-cooling" system on two proposed solar power plants in Amargosa Valley, 90 miles northwest of Las Vegas. This dry-cooling system will use 90 percent less water than previously planned.

When completed in 2011 this thermal solar project will be the largest in the world, generating 553 megawatts of power for Pacific Gas & Electric in the Mojave Desert in California. The plant is being built by Israeli company, Solel Solar Systems of Beit Shemes, Israel, a successor company to the people that built the nine thermal solar plants in the Mojave Desert, that have operated over the past 20 years and are currently generating 354 MW of electricity.

The Times has a story in the "deserts of gold" genre, confusing solar PV (panels) with concentrating solar thermal power - Solar panels in the Sahara 'could power the whole of Europe'. There is a new twist to the story now though, with North Africa's wind power potential also being touted. All of Europe's energy needs could be supplied by building an array of solar panels in the Sahara, the climate change conference has been told. Technological advances combined with falling costs have made it realistic to consider North Africa as Europe's main source of imported energy. By harnessing the power of the Sun, possibly in tandem with wind farms along the North African coastline, Europe could easily meet its 2020 target of generating at least 20 per cent of its energy from renewable sources.

The significance of the thermal stratification for the energy efficiency of small solar thermal hot water heat stores is pointed out. Exemplary the thermal stratification build-up with devices already marketed as well as with devices still in development has been investigated experimentally and theoretically, taking into account different realistic operation conditions.

Could a potential good case for developing an eco-sheet, provided we can get the bill of materials. For consideration by Sergio / Fernando.

The European market for solar thermal systems is in the transition phase. Over the past 4 years the market has undergone considerable changes, as the interest it receives from policy makers, industry players and end users is ensuring strong growth trends in the coming years.

The Canadian government boosted its incentives for home energy retrofits yesterday by 25 per cent for most items, which the Ontario government said it would match. It's all part of an effort to stimulate "green" home renovations as part of a larger effort to kickstart economic activity.

Energy: Think of solar power, and you probably think of photovoltaic panels. But there is another way to make electricity from sunlight, which arguably has even brighter prospects

Learn about Renewable Energy with our alternative energy webinars and educational videos about solar power, solar thermal, wind power and energy efficiency!

NV Energy deal, legislation in Congress could help state develop solar power SolarReserve, a California energy company, is planning to build a 100-megawatt solar thermal power plant near Tonopah, and on Tuesday it announced that NV Energy had agreed to buy power from the plant. As Stephanie Tavares reported on the Las Vegas Sun's Web site, the plant is designed to use heat storage technology that will allow its steam turbines to run at night. The Crescent Dunes Solar Energy Project is being vetted by the Bureau of Land Management. The company says it could break ground by 2011 and expects construction to last two years.

This paper is focussed on thermal storage technologies using phase change materials (PCMs) in the temperature range of 120-300°C for solar thermal power generation and high temperature process heat. As the state-of-the-art reference system a steam accumulator is described, which typically has a volume-specific thermal energy density of 20-30 kWh m-3.

The largest fully industrialized populus in the world could be entirely powered by a small fraction of solar desert energy, according to new plan The U.S. has some big plans for solar, both with building new power plants and through businesses and consumers adding solar panels to rooftops and unused land. However, no U.S. solar effort thus far compares to the ambitious plan that European Union (EU) officials are considering.