The U.S. government aims to improve energy production from renewables to oil, but what does that mean in practice? Energy Secretary Steven Chu explains.
DOE chief says research will reshape energy's future, enabling grids that run on renewable energy and creating batteries and vehicles that are both more efficient and powerful.
In a showdown with Republicans, Energy Secretary Steven Chu says no political influence came into play in approving the DOE's $535 million loan guarantee to solar company Solyndra.
University of Maryland takes the top prize in this year's Solar Decathlon with a net zero-energy house. Energy Secretary Steven Chu, on hand to congratulate the winners, also addresses recent criticism of clean-energy investments.
Energy Secretary Steven Chu says the U.S. can recapture leadership position in clean-energy technologies with an investment in R&D and long-term policies.
Energy Secretary Steven Chu sheds light on how the White House defines "clean-energy sources" as it seeks to push ahead on energy innovation to boost the economy.
Energy Secretary Steven Chu visits ARPA-E grant winner 1366 Technologies, a tiny solar start-up shooting to make solar as cheap as coal.
In an address to the National Press Club, Energy Secretary Steven Chu argues that federal R&D in energy needs to be sustained once stimulus dollars run out so the U.S. can stay competitive in the world economy.
Secretary of Energy Steven Chu announces grant money for improved building efficiency and to develop grid storage to complement wind and solar.
As part of climate negotiations in Copenhagen, U.S. Energy Secretary Steven Chu announces program to accelerate use of solar-powered LED lighting in poor countries.