This guide primarily applies to facility managers and energy managers of large existing office buildings larger than 100,000 square feet, but also includes considerations for small and medium office buildings. By presenting general project planning guidance as well as financial payback metrics for the most common energy efficiency measures, this guide provides a practical roadmap for effectively planning and implementing performance improvements for existing buildings.
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Energy savings can be achieved in corridors and other secondary spaces with an occupancy-based adaptive lighting system. Such a system is generally composed of occupancy sensors, dimmable ballasts and a communication platform. The system automatically lowers light levels to the minimum footcandles required by safety codes during vacancy and raises light output to the recommended level for occupant comfort during occupied periods. The adaptive lighting system installed at the Latham Square office building is based on Lutron’s Energi TriPak solution, a stand-alone platform for adaptive lighting that employs cost-effective wireless control devices and programmable dimming ballasts.
The California Lighting Technology Center partnered with Finelite, Inc. and Adura Technologies to develop and demonstrate a unique, wireless task/ambient office lighting solution ideally suited for the retrofit market. The system consists of two key elements: a task/ambient lighting system and advanced, wireless lighting controls. The combination substantially reduce energy use and improves lighting quality, and provides personal lighting control for individual work spaces, and does not require additional wiring or rewiring of existing luminaries or lighting circuits. The system has three specific components: adaptive ambient lighting, light-emitting diode task lighting, and wireless controls.
The California Energy Commission’s Public Interest Energy Research (PIER) Program sponsors the development and demonstration of energy-efficient building technologies. Over the past several years, PIER has developed strategic partnerships with the University of California, California State University, California Community Colleges, and California Department of General Services. These partnerships include a series of demonstration projects coupled with programmatic support to ensure continued deployment of energy-efficient technologies and practices across California. Examples of the latest energy-efficient innovations are described.