Discharge lamp power 70 watt energy consumption 70 kwh1000h series osram powerball hci ts socket rx7s light colour warm white daylight white light output 6 800 lumen colour temperature 3 000 k lifespan 12 000 h style glass bulb colour rendering index ra 88 ra length 120 mm diameter 20 mm average annual electricity cost 01951 kwh 1366 euros source average electricity cost based on figures from eurostat as of 2016