Halogen light energy rating d power 25 watt energy consumption 25 kwh1000h series osram halolux eco socket e14 voltage 230 v light colour warm white light output 260 lumen colour temperature 2 800 k lifespan 1 500 h style glass bulb variable intensity dimmable length 80 mm diameter 26 mm average annual electricity cost 01951 kwh 488 euros source average electricity cost based on figures from eurostat as of 2016