Application Directory
Last Update: April 13, 2012
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Lighting Applications

This Directory represents an integrated approach to advanced lighting on the basis of “applications”, that is, comprehensive designs of lighting and controls based on specific building types or space types.  The initial applications are Retail and Office buildings, but additional applications will be added in the future, such as Healthcare, Warehousing, Schools and Exterior Lighting.

Each application sector provides prototypical layouts of the space types commonly found within each subsector building/space type. A variety of luminaire types and approaches are offered, and each unique design is presented as a “module” with individual plans and perspectives. The features of each module are described, including design strategies, daylighting potential, quality, comfort, calculation assumptions, energy efficiency, advantages, disadvantages and “quicktips”.  For some modules, options for ballasts and controls are discussed. Recommendations are provided for related strategies such as furniture layouts, room dimensions, surface reflectances, maintenance and operations. Finally, a pre-calculated power allowances is provided for each variation.

The Applications Directory of the ALG has been developed in concert with the Commercial Lighting Solutions (CLS) web-tool, with funding from the U.S. Department of Energy. The information presented in ALG Online is a smaller sub-set of that available in the CLS web-tool, but those parts included herein are identical in content, although the format may vary. Direct links to the CLS site can be found throughout the Applications Directory material.

The Commercial Lighting Solutions (CLS) web-tool, developed by the Pacific Northwest National Laboratory, is an interactive design tool that allows the user to select individual design layouts and relevant controls, and combine them together into a whole project. At the end of the processes, the web-tool users receive a packet with the sample layouts, luminaire schedule, and an estimate of energy savings over their selected energy code. All designs are intended to achieve energy savings of 25% - 30% or more over ASHRAE/IESNA Standard 90.1-2007, while maintaining acceptable lighting quality. The CLS web-tool includes numerous links back to ALG Online to make use of the educational content found on this site.

These sample designs are not comprehensive nor are they intended to replace the need for lighting design professionals. Rather, they are intended to provide a starting point for owners and design teams faced with increasingly stringent energy codes and rising costs of energy, or those inspired to go beyond code minimums. Many other design layouts, luminaires and control schemes may provide equivalent or superior energy savings and lighting quality, when tailored to the specific needs of individual projects.

 Retail Applications:

Significant opportunities exist for reducing energy consumption in retail, making it the first building sector to be addressed. Sample lighting designs are provided for a variety of retail store types, including box retail, grocery stores, pharmacies, and specialty markets. Within each of these store types, layouts or “modules” are provided for specific areas, like shelving aisles, specialty displays, perimeter walls, and point-of-sale. Options are provided for daylight through the use of skylights, and control strategies are discussed for daylight harvesting, evening/nighttime dimming, after-hours switching, and occupancy sensing. The primary goal for retail stores is to highlight the product while providing appropriate ambient lighting that provides a pleasant backdrop for the shopping experience. Design strategies for “energy effective” retail lighting include daylighting, creation of varying layers of light to achieve adequate contrast to accentuate merchandise and to provide visual variety, and the wise use of lighting controls.

Office Applications:

Sample lighting designs are provided for the most common space types found within office buildings: open-plan offices, enclosed private offices, circulation, conference / meeting spaces, and reception areas. Within these space types, a variety of layouts or “modules” are presented, each with a different high-performance luminaire type (recessed or suspended), and different space characteristics such as ceiling height or cubicle density. Advanced lighting control options are discussed for each module, including dimming, multi-level switching, daylight harvesting, preset scene control and vacancy sensing, depending on the space type. Offices represent one of the largest commercial space uses in the country, making them a focus of energy conservation efforts. The luminaires and controls used for most of the space types meet the criteria of the GSA Specifications for Interior Lighting and Control Systems under the American Recovery and Reinvestment Act (ARRA). However, energy conservation is not the whole story.

Lighting for offices today must be “energy effective”, that is, use energy wisely to create a work environment that is productive, comfortable and healthy. Given the prevalent use of computers in the modern workplace, and the length of time adults spend in them, the qualitative aspects of lighting are now more important than ever. Support for photobiological effects and quality metrics can be found throughout the ALG Online site. These Office Application modules aim to maintain acceptable lighting quality by controlling glare, distributing light on the vertical surfaces, and by providing luminous balance, uniformity and natural color.  

Application Directory

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