Halogen light pin socket bulb energy rating d power 20 watt energy consumption 20 kwh1000h series osram halopin eco socket g9 voltage 230 v light colour warm white light output 200 lumen colour temperature 2 700 k lifespan 2 000 h style glass bulb variable intensity dimmable uv filter length 43 mm diameter 14 mm average annual electricity cost 01951 kwh 39 euros source average electricity cost based on figures from eurostat as of 2016