Halogen light energy rating c power 60 watt energy consumption 60 kwh1000h series osram halolux eco equivalent to light bulb 75 w socket b15d voltage 230 v light colour warm white light output 980 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape tubular variable intensity dimmable length 80 mm diameter 13 mm average annual electricity cost 01951 kwh 1171 euros source average electricity cost based on figures from eurostat a