Cleantech Update

Clean Edge Did a Cleantech Job Status Report.  Here is a summary -Editor 1 San Francisco-Oakland-San Jose, CA 2 Los Angeles-Riverside-Orange County, CA 3 New York-Northern New Jersey-Long Island, NY-NJ-CT-PA 4 Boston-Worcester-Lawrence-Lowell-Brockton, MA-NH 5 Washington-Baltimore, D.C.-MD-VA-WV 6 Denver-Boulder-Greeley, CO 7 Seattle-Tacoma-Bremerton, WA 8 Portland-Salem, OR 9 Chicago-Gary-Kenosha, IL-IN-WI 10 Sacramento-Yolo County, CA 11 San Diego, CA 12 Austin-San Marcos, TX 13 Phoenix, AZ 14 Detroit-Ann Arbor, MI 15 Houston-Galveston-Brazoria, TX Solar Biofuels and Biomaterials Conservation and Efficiency Smart Grid Wind Power In Clean Edge's report, they considered the following sectors: Renewable Energy (e.g., Solar, Wind) Energy Storage Energy Conservation and Efficiency Smart Grid Devices and Networks Electric Transmission and Grid Infrastructure Biomass and Sustainable Biofuels Energy-Efficient Desalination UV Filtration Reverse ...

Who says a solar company has to choose between conventional silicon and thin-film solar cells? RoseStreet Labs Energy , a Phoenix-based private company, is combining the two in a double-layered cell that it claims can achieve “practical efficiencies” – meaning efficiencies of cells actually available on the market, not just in the lab – of 25 to 30 percent . On Monday, the company announced the world’s first (or as RoseStreet put it, the “first known”) nitride/silicon tandem solar cell, which it plans to produce in the fourth quarter of next year. The potential efficiency might not sound breathtaking considering that the National Renewable Energy Laboratory and the Defense Advanced Research Projects Agency both announced last year that they had produced cells that achieved more than 40 percent efficiency in the lab. But lab efficiencies and production efficiencies are not the same thing, and the highest efficiencies for mass-produced solar cells hover around 22 percent. SunPower Cor...