Halogen light reflector lamp power 40 watt energy consumption 40 kwh1000h series sylvania hi spot socket e14 voltage 230 v light colour warm white luminous intensity 950 cd colour temperature 2 700 k beam angle 25 lifespan 2 000 h bulb shape reflector diameter 50 mm average annual electricity cost 01951 kwh 78 euros source average electricity cost based on figures from eurostat as of 2016