Fluorescent light energy rating a power 51 watt energy consumption 51 kwh1000h series philips master tl d eco socket g13 light colour neutral white light output 4 800 lumen colour temperature 4 000 k lifespan 15 000 h bulb shape tube light style glass bulb diameter 26 mm average annual electricity cost 01951 kwh 995 euros source average electricity cost based on figures from eurostat as of 2016