Pin socket bulb xenon bulb halogen light power 300 watt energy consumption 300 kwh1000h series osram hlx xenophot socket g6 35 voltage 230 v light output 8 500 lumen lifespan 15 h style glass bulb variable intensity dimmable average annual electricity cost 01951 kwh 5853 euros source average electricity cost based on figures from eurostat as of 2016