Energy saving bulb candle bulb energy rating b power 9 watt energy consumption 9 kwh1000h series osram dulux value classic b socket e14 voltage 230 v light colour warm white light output 410 lumen colour temperature 2 700 k lifespan 6 000 h bulb shape candle length 135 mm diameter 50 mm average annual electricity cost 01951 kwh 176 euros source average electricity cost based on figures from eurostat as of 2016