Halogen light energy rating d power 120 watt energy consumption 120 kwh1000h equivalent to light bulb 150 w socket r7s voltage 230 v light colour warm white colour temperature 2 900 k variable intensity dimmable mercury free colour rendering index ra 100 ra length 118 mm diameter 11 mm average annual electricity cost 01951 kwh 2341 euros source average electricity cost based on figures from eurostat as of 2016