Not sure if we've had this discussion before, but as I was reading Immortal Coil
by Jeffrey Lang in preparation for the upcoming Persistence of Memory
by David Mack, it struck me that I had not come across any mention either in the books or in the onscreen canon of how Data gets his energy.
Sure, he can
eat organic food, but he doesn't do so unless there's a social necessity. And we haven't seen or heard of him being plugged to a wall socket or have wireless energy beamed to him.
So where does Data get his energy?