Energy saving bulb energy rating a power 14 watt energy consumption 14 kwh1000h series osram duluxstar stick equivalent to light bulb 75 w socket e27 voltage 230 v light colour warm white light output 770 lumen colour temperature 2 700 k lifespan 10 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 136 mm diameter 44 mm average annual electricity cost 01951 kwh 273 euros source averag