Halogen light energy rating c power 400 watt energy consumption 400 kwh1000h series osram haloline eco socket r7s voltage 230 v light colour warm white light output 9 000 lumen colour temperature 3 000 k lifespan 2 000 h bulb shape halogen rod style glass bulb variable intensity dimmable uv filter length 118 mm diameter 12 mm average annual electricity cost 01951 kwh 7804 euros source average electricity cost based on figures from eur