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The DOE accounts for its spending of stimulus funding.
Skyline Solar, a new startup, is combining conventional technologies to lower solar-power costs.
A biotech startup wants to coax fuels from engineered microbes.
A manufacturing method that uses light instead of heat wastes less energy and makes the cells more efficient.
Battery draws power from salinity difference between freshwater and saltwater.
A startup says technology inspired by RAID hard drives can boost power output by up to 50 percent.
Every clean-tech startup these days claims to have a breakthrough that will finally make renewable and clean energy sources cheap enough to compete with fossil fuels. But are we really on the brink of a clean-energy economy?
Full operations will start at a U.S. mine by the end of next year.
Both Siemens and GE bet on direct-drive generators.