[quote=Master Crim]
What kind of energy can he absorb and how?
[/quote]

He can absorb the natural energies that he come in contact, but no magic or psychic energies. He can absorb radiation, plasma energy (lighting and the like), kinetic energy, and thermal energy. This is limited to energy that he has made contact with. He is not able to be tightly strapped to a chair in a dark room and just suddenly decide to absorb energy from the air or suck power from an electrical outlet halfway across the room or anything like that. He would have to be in contact with or really close to absorb any energies. If he was completing a circuit then that energy is fair game but if he is on the ground watching someone else get blasted by energy, he couldn't do anything unless he could get in the energy's path.

Does that suffice?