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With a $34.5 million round, famed VC firm Kleiner Perkins boosts its investment in the novel wind turbine maker, which uses a design inspired by jet engines.
Wind turbine start-up is seeking funding to build prototypes of a turbine that its says is cheaper than traditional turbines and can be used for more distributed applications.
A quirky helix-shaped wind turbine is an experiment in boosting wind speed to make wind energy viable in low-wind locations, such as cities and suburbs.
Entrepreneurs at five early-stage, clean-energy companies in Massachusetts say creating a network of like-minded businesses goes a long way to cultivating green start-ups.
Futurist and Kleiner Perkins green-tech venture capitalist Bill Joy says VCs need to focus on breakthrough energy technologies, such as cheap distributed solar, to succeed.
A start-up says its "shrouded" wind turbine can produce three to four times more power than traditional blade turbines.
Looking to highlight the fruits of investing in energy research and development, the Department of Energy says six ARPA-E grants attracted four times more money from the private sector.
V Squared Wind, a finalist in the Clean Tech Open, is one of few companies trying to accelerate wind to get more usable energy, particularly in marginal wind areas.
Start-up Optiwind is testing whether there is a middle ground for wind power to serve schools, farms, and businesses with marginal wind resources.
Army will test WindTamer's small wind turbine for charging communications equipment. Company is one of a handful seeking alternatives to traditional three-blade design.