Halogen light pin socket bulb power 35 watt energy consumption 35 kwh1000h series osram halostar eco equivalent to light bulb 50 w socket gy6 35 voltage 12 v light colour warm white light output 860 lumen colour temperature 2 900 k lifespan 4 000 h style glass bulb variable intensity dimmable uv filter length 45 mm diameter 12 mm average annual electricity cost 01951 kwh 683 euros source average electricity cost based on figures from eu