Super-efficient LEDs or quantum dot devices will be integrated into a lot of common devices like cell phones/PDAs, TV remote controls, garage door openers, calculators, watches and the like.
AA powered lights with 200 lumens of output will be available.
Many household incandescents will be replaced by higher output LEDs/QDots.
Thin OLED flat panel screens will replace TV screens and monitors.
Governments will be pushing LEDs/QDots to reduce the need to increase the number of expensive nuclear, hydro and thermal generating plants.