Fluorescent light energy rating a power 13 watt energy consumption 13 kwh1000h series osram dulux de socket g24q light colour warm white light output 900 lumen colour temperature 3 000 k lifespan 15 000 h bulb shape compact fluorescent tube style bulb housing length 115 mm average annual electricity cost 01951 kwh 254 euros source average electricity cost based on figures from eurostat as of 2016