EPA says it wants to lower the amount of ethanol oil companies are required to blend with their fuel.
Conventional batteries take so long to charge that they cannot efficiently store braking energy. Graphene supercapacitors store almost as much but charge in just 16 seconds.
As the solar industry matures, it better start worrying about dust, as SunPower is with its solar panel washer acquisition.
In a smart city, every electric vehicle must have access to a charging station within its driving range. So how should these stations be located? The good news: computer scientists have solved the general version of this problem. The bad news: it's NP-hard.
Musk says battery cell capacity will need to double worldwide for Tesla to produce a mass-market electric car.
A new study from the National Center for Atmospheric Research says geoengineering could decrease rainfall compared to pre-industrial periods.
There's a huge amount of wind off the coast of Japan, but harnessing it will be fantastically expensive.
New USB plugs will be able to handle ten times as much power, potentially changing the way we charge electronics.
Phasing out the production tax credit, and adding cost and performance requirements, could shorten the path to large-scale renewable energy.
GE hopes to increase power output at existing wind turbines by offering free upgrades--you just pay if the upgrades work.