DARPA Wants Portable Solar Power to be Light

Here's another instance where renewables are being considered for use, not because they are green, but because they allow the shortest logistics tail:

DARPA is holding out for cutting edge solar technology in a military landscape that is increasingly reliant on portable electronic devices. Fueling [portable] devices is a logistical challenge of epic proportions, especially when it comes down to powering up individual troops and robotic devices. Oil, coal, and other fossil fuels won’t cut it, nuclear is not an option when it comes to small mobile units, and conventional batteries are proving far too heavy and short-lived.

Full article here.