Daylight bulb fluorescent light golf ball bulb energy rating a power 14 watt energy consumption 14 kwh1000h series osram lumilux t5 he osram active socket g5 voltage 230 v light colour neutral white light output 1 200 lumen colour temperature 4 000 k lifespan 16 000 h bulb shape golf ball style glass bulb length 550 mm diameter 16 mm average annual electricity cost 01951 kwh 273 euros source average electricity cost based on figures fro