Pin socket bulb xenon bulb halogen light power 250 watt energy consumption 250 kwh1000h series osram hlx xenophot socket gy6 35 voltage 24 v light colour warm white light output 9 000 lumen colour temperature 2 900 k lifespan 300 h style glass bulb variable intensity dimmable average annual electricity cost 01951 kwh 4878 euros source average electricity cost based on figures from eurostat as of 2016