Energy saving bulb energy rating a power 14 watt energy consumption 14 kwh1000h series osram dulux intelligent longlife osram dulux el longlife equivalent to light bulb 65 w socket e27 voltage 230 v light colour warm white light output 820 lumen colour temperature 2 500 k lifespan 20 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 130 mm diameter 45 mm average annual electricity cost 01951