Halogen light energy rating d power 20 watt energy consumption 20 kwh1000h series paulmann minihalogen socket e27 voltage 230 v light colour warm white light output 186 lumen colour temperature 2 900 k lifespan 1 500 h style glass bulb variable intensity dimmable length 74 mm diameter 27 mm average annual electricity cost 01951 kwh 39 euros source average electricity cost based on figures from eurostat as of 2016