Halogen light energy rating c power 80 watt energy consumption 80 kwh1000h series osram haloline eco socket r7s voltage 230 v light colour warm white light output 1 450 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape halogen rod style glass bulb variable intensity dimmable mercury free length 78 mm diameter 12 mm average annual electricity cost 01951 kwh 1561 euros source average electricity cost based on figures from eur