Energy saving bulb energy rating a power 18 watt energy consumption 18 kwh1000h series osram dulux intelligent longlife osram dulux el longlife equivalent to light bulb 100 w socket e27 voltage 230 v light colour neutral white light output 1 050 lumen colour temperature 4 000 k lifespan 20 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 145 mm diameter 45 mm average annual electricity cost 0