NRG Energy CEO David Crane foresees a day not so far off when new technologies like rooftop solar and batteries will turn the electric power industry upside down, and NRG is moving in that direction. NRG Energy charges ahead with green strategy NRG Energy CEO David Crane foresees a day not so far off when new technologies like rooftop solar and batteries will turn the electric power industry upside down, and NRG is moving in that direction.