Halogen light reflector lamp power 50 watt energy consumption 50 kwh1000h series osram halopar 20 superstar osram halopar 20 socket e27 voltage 230 v light colour warm white luminous intensity 1 000 cd colour temperature 2 800 k lifespan 2 000 h bulb shape reflector variable intensity dimmable uv filter length 90 mm diameter 65 mm average annual electricity cost 01951 kwh 976 euros source average electricity cost based on figures from eur