Circular light fluorescent light circline energy rating b power 22 watt energy consumption 22 kwh1000h series philips master tl5 circular socket 2gx13 light colour neutral white light output 1 800 lumen colour temperature 4 000 k lifespan 8 000 h bulb shape circular tube average annual electricity cost 01951 kwh 429 euros source average electricity cost based on figures from eurostat as of 2016