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The DOE recently launched a new version of its Commercial Lighting Solutions Web tool expanding energy-saving lighting solutions and approaches to offices and institutional buildings. The Web tool provides detailed instructions to help building owners and operators reduce the energy used by commercial lighting by 30% or more. DOE, in partnership with top lighting designers, architects, and commercial end-users, developed Commercial Lighting Solutions and its interactive Web tool, which estimates energy savings based on project-specific inputs. Although the first version of the Web tool offered solutions for five types of retail stores, this latest version offers solutions for offices and institutional buildings.