Led bulb energy rating a power 7 watt energy consumption 7 kwh1000h series philips master ledbulb equivalent to light bulb 40 w socket e27 voltage 230 v light colour warm white light output 470 lumen colour temperature 2 700 k lifespan 25 000 h bulb shape standard style bulb housing variable intensity dimmable length 110 mm diameter 62 mm average annual electricity cost 01951 kwh 137 euros source average electricity cost based on fig