Acuity Brands Inc., Atlanta, says its Lithonia Lighting Relight kits were installed in the corporate headquarters of Medical Mutual of Ohio located in the historic Rose Building in Cleveland. The lighting renovation project was completed with no work disruption, and is estimated to decrease the building`s annual energy use for lighting by more than 50 percent, or from 1.9 million kilowatt hours to about 906,000 million kilowatt hours. Cincinnati-based Eco Engineering LLC , a specialized provider of energy-efficient lighting services and upgrades, identified and implemented the lighting solution for Medical Mutual of Ohio utilizing 2,600 volumetric Relight kits.