Halogen light reflector lamp power 75 watt energy consumption 75 kwh1000h series osram halopar 38 socket e27 voltage 230 v light colour warm white luminous intensity 7 200 cd lifespan 20 000 h bulb shape reflector variable intensity dimmable length 140 mm diameter 125 mm average annual electricity cost 01951 kwh 1463 euros source average electricity cost based on figures from eurostat as of 2016