That is roughly four times the light at half the energy use. To see what this energy savings can mean to you, go to our lighting worksheet . A new technology that holds great promise for commercial buildings is the Sulfur lamp . These lamps produce a very bright, near-sunlight quality light at high efficiencies. Lawrence Berkeley National Laboratory has developed an alternative approach that uses uplighters , which direct the light upward and bounce it off the ceiling.
Sulfur lamps are also an excellent choice for energy-efficient outdoor lighting.