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Open AccessArticle

Laboratory Validation of Integrated Lighting Systems Retrofit Performance and Energy Savings

Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Energies 2020, 13(13), 3329; https://doi.org/10.3390/en13133329
Received: 5 June 2020 / Revised: 26 June 2020 / Accepted: 28 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Application of Advanced Lighting Systems in Buildings)
Light-emitting diodes (LED) fixtures and lamps have emerged as leading technologies for general illumination and are a well-established energy efficiency retrofit measure in commercial buildings (from around 2% of installed fixtures and lamps in 2013 to 28% by 2020). Retrofit approaches that integrate elements, such as networked controls, daylight dimming, and advanced shade technologies lag in comparison. Integrated retrofits have been shown to increase savings over single end-use retrofits, but are perceived as higher complexity and risk. More validation of integrated lighting system performance is needed. This study presents results from laboratory testing of three packages combining fixtures, networked controls, task tuning, and daylight dimming, advanced shades, and lighting layout changes. We characterize performance in perimeter open-office zones, finding energy savings from 20% for daylight dimming and automated shades (no LED retrofit) to over 70% for LED retrofits with advanced controls and shades or lighting layout changes. We present some implementation details, including lessons learned from installation and commissioning in the laboratory setting. We also discuss cost-benefit analysis approaches for the types of packages presented, including the need to quantify and incorporate energy and non-energy benefits for advanced shades packages, which enhance occupant comfort but add significant cost. View Full-Text
Keywords: integrated lighting retrofits; advanced lighting controls; daylighting; LEDs; commercial buildings; energy savings; automated shading systems integrated lighting retrofits; advanced lighting controls; daylighting; LEDs; commercial buildings; energy savings; automated shading systems
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MDPI and ACS Style

Shackelford, J.; Mathew, P.; Regnier, C.; Walter, T. Laboratory Validation of Integrated Lighting Systems Retrofit Performance and Energy Savings. Energies 2020, 13, 3329.

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