... ( per lamp )200W ( per lamp )Actual Power Consumption460W ( lamp & ballast )210W ( lamp & ballast )Brightness373Lux510LuxLuminous EfficacyLow Efficacy, Severe Luminous Decline, Poor CRIHigh ... . of Fixtures274 Sets274 Sets Energy and Related Cost Savings: ( 460W – 210W ) X 274 Fixtures=68,500Watts68,500 Watts X 24 hours ...