The Fukushima disaster led Japan to shut down nuclear power plants, but three years of rising costs and carbon dioxide emissions are forcing it to reverse course.
A startup, Halotechnics, is building a pilot electricity storage system that will use molten salt.
ARPA-E faces a tricky mandate—invest in risky technologies that no one else wants to fund, while still showing results.
Software is taking over cars. But it may be a while before it can be updated without a trip to the dealer.
The company has managed the nearly impossible for a solar startup over the last few years: it is still in business.
The electric car company’s CTO explains what’s going on under the hood.
If it can convert natural gas to transportation fuels and commodity chemicals, it could reduce our dependence on oil.
By making a cheaper LED lightbulb, the newcomer to the industry hopes to dominate the market for energy-efficient lighting alternatives.
Aquion manufactures cheap, long-lasting batteries for storing renewable energy.
ARPA-E is funding several projects that use liquid battery electrodes to cut costs and increase energy density.