Cleantech

How to put solar panels on your roof, even if you don’t have a roof

A bill advancing through the California legislature would make it easy for anyone who pays a utility bill to become a solar customer.

Spray-on batteries could turn your coffee cup into an energy collecting device

A team of engineers have figured out how to make spray-on, rechargeable batteries that could transform any surface, anywhere, into a device for collecting and storing energy.

This gigantic hybrid ship can run on a battery

Although gigantic ships are relatively efficient — compared to, say, transporting massive amounts of stuff by airplane — they do use an astounding amount of fuel. The shipping industry is working on this problem. In particular, a Norwegian shipping company …

Here’s a fuel cell that runs on brain juice

Whatever, Google Glasses; I’m holding out for the Google brain implant. And that just got a little more plausible, thanks to new technology for fuel cells that run off of blood sugar. In theory, if you popped one of these babies …

Lay off the Konarka: Dem energy message risks defeating Dem energy message

The Democrats' "all of the above" energy message is an effective one. Their "Romney backed a solar clunker too" message is not.

The promise and peril of a military shift to biofuels

The U.S. military's most audacious green initiative is trying to find biofuels to power its fleets. The effort could transform markets ... but it also poses big risks.

Republicans try to force the military to use dirty energy it doesn’t want

The GOP wants to block the military's use of cleaner fuels and push use of dirtier fuels. "Supporting the troops" apparently ends where Big Oil contributions begin.

Could Romney’s scorn for wind power hurt him in the heartland?

Mitt Romney promises to revoke federal support for the wind industry. That might not go over well in swing states like Iowa, where the booming wind sector has wide, bipartisan support.

U.S. military kicks more ass by using less fossil-fuel energy

To understand the promise of renewable energy for the U.S. military, start as far from D.C. as possible -- say, with a company of Marines in Afghanistan.