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  • The Five Worst States for Renewable Energy Development

    Despite the availability of clean and sustainable energy sources like solar, wind, hydropower, geothermal and biomass, many states depend on outdated and dirty energy sources. Ohio, Pennsylvania, Indiana, Missouri and Tennessee are among the most in need of an energy portfolio diversification. More

  • DIY Biomass: Briquettes, Presses, Logs, and More

    “Biomass” is one of those terms like “alternative energy”: it could be a sustainable approach to energy generation, but isn’t always. I once sat through a talk by an energy services company executive in which he argued that forest biomass (think trees, undergrowth, etc., cut for burning) was carbon-neutral because “the plants could grow back.” […] More

  • Hawaii: an Epicenter for Renewable Energy

    Hawaiian culture is steeped in a delicate harmony with nature. The islands boast consistently strong wind densities, great insolation characteristics, enormous reservoirs of geothermal energy, plant life that is perfect for the production of ethanol, and an incredible oceanic wave resource, all of which could be exploited by renewable technologies without damaging the environment. As […] More

  • The Limits and Potential of Plant-Based Energy

    By Lester R. Brown As oil and natural gas reserves are being depleted, the world’s attention is increasingly turning to plant-based energy sources. These include food crops, forest industry byproducts, sugar industry byproducts, plantations of fast-growing trees, crop residues, and urban tree and yard wastesβ€”all of which can be used for electrical generation, heating, or […] More

  • SolveClimate: Biochar and George Monbiot's Misguided Rant

    Editor’s note: This post was written by Max Ajl, and originally published on Wednesday, March 25, at SolveClimate. A couple of weeks ago, we discussed the possibilities of biochar – burning organic waste, such as wood chips, left-over crop residue or even manure at extremely low oxygen levels and high temperatures in order to produce […] More

  • EPA Uses Google Earth-based Interactive Database to Spot Energy Opportunities

    The Environmental Protection Agency has released an interactive Google Earth-based database which pinpoints energy development opportunities on contaminated properties. According to Biofuels Digest, the EPA’s site shows opportunities for solar, wind and biomass benefits, by combining Google Earth visuals with the database list of places that show promise for progress. The “Renewable Energy on Contaminated […] More

  • Cleantech Possibilities for 2008

    The end of 2007 brought with it news of cleantech developments for 2008 and beyond. Here are a few that I found most interesting. Do any sound promising to you? Fuel Cubes A Minnesota company called Renewafuel has developed a biomass briquette that is similar in size and moisture content to coal, produces a consistent […] More