Hybrid Solar Lighting Workshop

at the Southeast Solar Summit

Friday, October 26, 2007

8:30 a.m. - 12 noon

Contact: John Morris, President, Sunlight Direct, Inc.

Register Now as Space is Limited!


Join Sunlight Direct, Inc for an in-depth workshop on Hybrid Solar Lighting


Hybrid solar lighting (HSL) is a technology in which sunlight is collected and distributed via optical fibers into the interior of buildings. Analogous to hybrid electric vehicles that use both batteries and internal combustion engines to power cars, hybrid lighting employs roof-mounted collectors to concentrate sunlight into flexible optical fibers and carry it inside buildings to "hybrid" light fixtures that also contain electric lamps. As the two light sources work in tandem, control systems keep lighting levels constant by dimming the electric lights when sunlight is bright, and turning them up as the sky darkens with weather conditions or nightfall. Data indicate that on a bright, sunny day the power consumption for lighting can be reduced by 50% or more.

HSL collectors a top the Multi-Purpose Facility
in Oak Ridge, Tennessee

Wal-Mart's Electronics Aisle with
Hybrid Spotlight Luminars

Today, lighting in U.S. residential and commercial buildings consumes close to 5 quadrillion BTUs of primary energy and one-fifth of all electricity. In commercial buildings, one-quarter of all energy demand is for lighting. With a forecasted doubling of commercial floor space by the year 2020 comes an urgent and growing need to find more efficient ways of lighting our nation's buildings. Typically, less than 25% of the electrical energy consumed for lighting actually produces light; the rest generates heat, which increases the need for air-conditioning. Unlike conventional electric lamps, the sunlight from HSL systems produces virtually no waste heat.

This workshop will showcase the R&D and HSL system components and offer tours of the demonstration systems installed at ORNL.

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Last Modified: 9/17/2007