Energy saving bulb energy rating a power 30 watt energy consumption 30 kwh1000h series osram dulux intelligent longlife osram dulux el longlife equivalent to light bulb 132 w socket e27 voltage 230 v light colour warm white light output 1 940 lumen colour temperature 2 500 k lifespan 20 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 195 mm diameter 58 mm average annual electricity cost 0195