Discharge lamp power 50 watt energy consumption 50 kwh1000h series philips master son t socket e40 voltage 230 v light colour warm white light output 4 400 lumen colour temperature 2 000 k lifespan 28 000 h bulb shape tubular style glass bulb average annual electricity cost 01951 kwh 976 euros source average electricity cost based on figures from eurostat as of 2016