Halogen light energy rating c power 70 watt energy consumption 70 kwh1000h series osram halolux eco equivalent to light bulb 100 w socket e27 voltage 230 v light colour warm white light output 1 180 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape tubular length 105 mm diameter 32 mm average annual electricity cost 01951 kwh 1366 euros source average electricity cost based on figures from eurostat as of 2016