Ultra-efficient LED puts out more power than is pumped in

http://www.wired.co.uk/news/archive/2012-03/09/230-percent-efficient-leds

Scientists Create 230-Percent Efficient LED Bulbs – Gizmodo

http://gizmodo.com/5890719/scientists-create-230+percent-efficient-led-bulbs

LED’s efficiency exceeds 100%

http://phys.org/news/2012-03-efficiency.html