Energy saving bulb energy rating a power 23 watt energy consumption 23 kwh1000h series philips tornado performance socket e27 voltage 230 v light colour warm white light output 1 500 lumen colour temperature 2 700 k lifespan 12 000 h bulb shape spiral tube style bulb housing variable intensity not dimmable length 119 mm diameter 62 mm average annual electricity cost 01951 kwh 449 euros source average electricity cost based on figures fr