Research shows that silicon is as efficient as pricier materials.
Boston-Power ramps up production of its long-lasting battery.
New studies show that it takes less energy to grow cellulosic crops.
A plan to build the largest wind farm in New England has received final approval.
Nanowire electrodes could improve the performance of electric vehicles.
Advanced biofuels, more-efficient vehicles, and solar power top the most notable energy stories of 2007.
A portable system converts biowaste into jet fuel and diesel for the military.
The energy bill signed this week will have an enormous impact on biofuels.
Politics continue to complicate energy policy.
One photovoltaic wire could power a sensor; arrays could yield cheaper electricity.