Led bulb led tube light energy rating a power 8 watt energy consumption 11 kwh1000h series osram substitube value socket g13 voltage 230 v light colour neutral white light output 750 lumen colour temperature 4 000 k beam angle 160 lifespan 30 000 h variable intensity not dimmable mercury free length 600 mm diameter 28 mm average annual electricity cost 01951 kwh 215 euros source average electricity cost based on figures from eurostat