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Solar cell breaks efficiency record
December 6, 2006 It converts almost 41 percent of light that hits it into electricity, almost double the efficiency of current commercial cells.Shrinking the cost for solar power
May 11, 2007 With a big facility and careful planning, it's possible to produce solar power for a competitive price, experts say.Saving wind power for later
March 27, 2007 Start-up General Compression looks to commercialize concept for storing electricity generated by wind turbines using compressed air.Image: Pumping wind power undergroundPlug in your hybrid, pollute less?
April 28, 2006 Maybe yes, maybe no. A lot depends on where you live and how your electricity gets produced. Photos: A souped-up PriusSolar industry chases a cheaper kilowatt
March 9, 2006 After decades of promise, solar power is starting to pay off via more efficient and affordable tech. Photos: The many faces of the solar powerFull steam ahead for Nevada solar project
March 12, 2007 A new power plant in the desert taps into solar-thermal energy to pour on the electricity for nearby Las Vegas.Images: Solar thermal heats up in the desertDishing out power with a solar engine
October 25, 2006 Infinia looks to an existing technology--the Stirling engine--to compete in solar-electric industry.Photos: Retro energy-harnessPolyester fabric neutralizes stun gun jolt
April 5, 2006 Some fabrics repel moisture; Thor Shield repels electricity and can render a stun gun useless.Utility, commodity: IT to follow electricity?
March 11, 2005 Sun President Jonathan Schwartz says there are telling parallels between the rise of the electricity and technology industries.MIT-led study finds geothermal energy potential untapped
January 22, 2007 Heat mining technology can be improved and deployed broadly to generate clean electricity, says an Energy Department-sponsored report.A Taser shotgun for long-range electrifying
February 14, 2006 Maker of controversial stun guns completes testing on a shotgun that delivers a walloping dose of electricity.Cutting solar panels' high price tag
September 25, 2007 Industry luminaries will meet this week at the annual Solar Power 2007 to celebrate booming business. But high costs remain a barrier to wider adoption.Portable power from trash
June 22, 2007 AgriPower has developed a "virtual landfill" system that can produce electricity and heat by burning anything from nuts to old tires. Photo: Energizing trashSolar star Konarka raises another $20 million
February 14, 2006 Konarka, which specializes in plastics that convert light into electricity, has raised $20 million in its latest round of venture funding.Storing sun and wind power
December 5, 2007 Several technologies are being tested to tie large-scale storage to renewable power sources. Images: Making wind power that lasts all dayGoogle to enter clean-energy business
November 27, 2007 Search giant earmarks hundreds of millions of dollars with the goal of generating a gigawatt of clean energy that's cheaper than coal.Silicon vs. CIGS: With solar energy, the issue is material
October 2, 2006 What should solar panels be made of? Silicon has history on its side, but the future may lie in CIGS.Solar thermal plants go back to the future
September 10, 2007 Start-up Ausra nabs $40 million in venture capital to build utility-scale solar power plants, an idea that is again gaining traction. Photo: Collecting sunlightCreating power out of thin air
October 26, 2007 Imagine a material that can suck in heat from the environment and power a notebook. A New Jersey company is aiming to do just that.Pint-size hydro power on tap
October 24, 2007 Start-up Rentricity designs a generator that brings hydroelectric power down to size for cites and towns.
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