Energy saving bulb energy rating a power 12 watt energy consumption 12 kwh1000h series philips tornado esaver socket e27 voltage 230 v light colour warm white light output 741 lumen colour temperature 2 700 k lifespan 10 000 h bulb shape spiral tube style bulb housing variable intensity not dimmable average annual electricity cost 01951 kwh 234 euros source average electricity cost based on figures from eurostat as of 2016