Energy saving bulb energy rating a power 15 watt energy consumption 15 kwh1000h series sylvania mini lynx fast start socket e27 voltage 230 v light colour warm white light output 725 lumen colour temperature 2 700 k lifespan 6 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 116 mm diameter 48 mm average annual electricity cost 01951 kwh 293 euros source average electricity cost based o