Amends the Internal Revenue Code to allow a new energy tax credit for investment in equipment that: (1) uses prismatic or other lenses, glazing, reflectors, or concentrators to convey or diffuse natural light into a structure or that uses a highly reflective light pipe which has a solar collection component and a distribution lens at the ends to transport visible solar radiation from its collection point to illuminate the interior of a structure, and (2) integrates automotic lighting controls to adjust traditionally powered lighting to satisfy building lighting requirements.