Halogen light pin socket bulb reflector lamp power 50 watt energy consumption 50 kwh1000h series sylvania hi spot socket gu10 voltage 230 v light colour warm white luminous intensity 1 360 cd colour temperature 2 750 k beam angle 25 lifespan 4 000 h bulb shape reflector average annual electricity cost 01951 kwh 976 euros source average electricity cost based on figures from eurostat as of 2016