Led bulb energy rating a power 6 watt energy consumption 6 kwh1000h series osram led superstar classic a equivalent to light bulb 40 w socket e27 voltage 230 v light colour warm white light output 470 lumen colour temperature 2 700 k lifespan 25 000 h variable intensity dimmable mercury free length 97 mm average annual electricity cost 01951 kwh 117 euros source average electricity cost based on figures from eurostat as of 2016