Energy saving bulb energy rating a power 23 watt energy consumption 23 kwh1000h series philips genie esaver equivalent to light bulb 100 w socket e27 voltage 230 v light colour warm white light output 1 450 lumen colour temperature 2 700 k lifespan 10 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 150 mm diameter 48 mm average annual electricity cost 01951 kwh 449 euros source aver