Fluorescent light energy rating a power 36 watt energy consumption 36 kwh1000h series osram active socket g13 light colour neutral white light output 3 350 lumen colour temperature 4 000 k lifespan 18 000 h bulb shape tube light diameter 26 mm average annual electricity cost 01951 kwh 702 euros source average electricity cost based on figures from eurostat as of 2016