Khan Trav
SOC-12
On of my current campaigns involved a mercenary unit. The commander operated out of a command tent which drew power from a portable power supply which was recharged each day via solar power. The entire tent was made of a fabric which contained photovoltaic cells which was connected to the commander's power unit. I realize this is not a perfect system but before he was attacked by the PCs and chased off the planet, he did enjoy his moring expresso.