Energy saving bulb energy rating a power 20 watt energy consumption 20 kwh1000h series sylvania mini lynx fast start socket e27 voltage 230 v light colour neutral white light output 1 100 lumen colour temperature 4 000 k bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 136 mm diameter 48 mm average annual electricity cost 01951 kwh 39 euros source average electricity cost based on figures from e