Halogen light pin socket bulb reflector lamp energy rating d power 25 watt energy consumption 25 kwh1000h series philips ecohalo socket gy6 35 voltage 12 v light colour warm white light output 470 lumen colour temperature 2 800 k lifespan 2 000 h bulb shape reflector style glass bulb variable intensity dimmable length 45 mm diameter 11 mm average annual electricity cost 01951 kwh 488 euros source average electricity cost based on figu