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  • How to Make a ?Perfect? Solar Absorber
    The key to creating a material that would be ideal for converting solar energy to heat is tuning the material?s spectrum of absorption just right: It should absorb virtually all wavelengths of light that reach Earth?s surface from the sun ? but not much of the rest of the spectrum, since that would increase the energy that is reradiated by the material, and thus lost to the conversion process.

  • A Bounty of Shared Solar
    I always enjoy learning obscure terms for collective nouns (a convocation of eagles, a bloat of hippopotamuses) so I wonder if we could coin a good term for a collection of shared solar programs? A ?bounty? perhaps? Whatever we call it, the collection of programs continues to grow year after year. If you?ve been following IREC for some time, you ma

  • German Renewables Output Tops Lignite
    Renewables became Germany?s most important power source for the first time this year, according to Agora Energiewende.

  • Listen Up: Cap and Trade's Impact on Fuel Prices
    Over 95 percent of climate scientists have concluded that CO2 is the primary cause of global warming. Solving the problem requires a dramatic reduction in CO2 emissions. Some people are altruistic, but almost all businesses are bottom line oriented and will not reduce their CO2 emissions unless they have an economic incentive to do so. There are two realistic incentives: taxing CO2 emissions or setting up a cap and trade program for CO2. Since increasing taxes is politically unfeasible, the most practical approach is with a cap and trade program.

  • Renewable Gas from Wastewater Treatment Plant Fueling UK Homes
    Extracting energy from ?processed poo? to help power homes in the Birmingham area is what Severn Trent Plc, Britain?s second-largest publicly traded water company, is now doing to generate a cost-saving renewable gas.


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