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The CIBSE Journal CPD Programme: Lighting control technologies and strategies to cut energy consumption

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Lighting is responsible for around 20% of office electricity use. By adoption of state of the art controls, lighting energy may be reduced by 60% while at the same time reducing the building cooling costs by 20%. This article explains how this can be achieved. It explains the basics of lighting control and the DALI technology. In the last part it also outlines a short case study that was performed in the New York Times HQ where the annual average light power of only 4 W/m2 was achieved (local building code requirement was 13.5 W/m2).