Halogen light reflector lamp power 300 watt energy consumption 300 kwh1000h socket gx16d voltage 230 v light colour warm white luminous intensity 30 000 cd colour temperature 2 750 k lifespan 2 000 h bulb shape reflector style bulb housing variable intensity dimmable length 127 mm diameter 179 mm average annual electricity cost 01951 kwh 5853 euros source average electricity cost based on figures from eurostat as of 2016