Do you know what is highest efficacy in LED industry?

CREE has reported its industry-best R&D results of 161 lm per watt for a white high power LED.

CREE confirmed that the 1 mm by 1 mm LED produced 173 lumens of light output and achieved 161 lumens per watt efficacy at a color temperature of 4,689 K. The tests were conducted under standard LED test conditions at a drive current of 350 mA, at room temperature.

Therefore, luminous efficiency is 12-15 times than incandescent bulbs. We believe LED lighting period are coming.