Halogen light pin socket bulb power 14 watt energy consumption 14 kwh1000h series osram halostar eco socket g4 voltage 12 v light colour warm white light output 240 lumen colour temperature 3 000 k lifespan 4 000 h variable intensity dimmable uv filter length 35 mm diameter 10 mm average annual electricity cost 01951 kwh 273 euros source average electricity cost based on figures from eurostat as of 2016