Pin socket bulb reflector lamp xenon bulb halogen light power 150 watt energy consumption 150 kwh1000h series osram hlx xenophot socket g6 35 voltage 15 v light colour warm white lifespan 50 h bulb shape reflector variable intensity dimmable diameter 51 mm average annual electricity cost 01951 kwh 2927 euros source average electricity cost based on figures from eurostat as of 2016