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.
By making a cheaper LED lightbulb, the newcomer to the industry hopes to dominate the market for energy-efficient lighting alternatives.
If it can convert natural gas to transportation fuels and commodity chemicals, it could reduce our dependence on oil.
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.
Sochi organizers say they’re offsetting Olympics-related carbon emissions, but they’re not accounting for everything.