Technically, all forms of energy "production" we have are basically extraction from an existing store of said energy. Try reading[0], it's about the two guys who proposed a black hole powered space ship. What they suggest is extraction energy from the sun (an existing source) and making a black hole (or maybe more from the same one), and then use that to power your ship.

"With a set of four machines: black hole generator, black hole drive, power plant, and a self perpetuating black hole powered black hole generator, the potential is enormous. "

[0]http://io9.com/5391989/a-black-hole-engine-that-could-power-...