Circular light fluorescent light circline energy rating b power 55 watt energy consumption 55 kwh1000h series philips master tl5 circular socket 2gx13 light colour warm white light output 4 200 lumen colour temperature 3 000 k lifespan 8 000 h bulb shape circular tube average annual electricity cost 01951 kwh 1073 euros source average electricity cost based on figures from eurostat as of 2016