Golf ball bulb incandescent light energy rating e power 40 watt energy consumption 40 kwh1000h series philips standard socket e14 voltage 230 v light colour warm white light output 405 lumen colour temperature 2 700 k lifespan 1 000 h bulb shape golf ball style glass bulb variable intensity dimmable diameter 45 mm average annual electricity cost 01951 kwh 78 euros source average electricity cost based on figures from eurostat as of 2016