U.S. Secretary of Energy Jennifer M. Granholm announced the four winners in Phase 1 of the U.S. Department of Energy’s (DOE) Lighting Prize (L-Prize®) at the Building Technologies Office’s annual Solid-State Lighting Workshop. The L-Prize® is a \$12.2 million prize lighting competition launched by DOE in May 2021. The L-Prize® is designed to spur groundbreaking innovation, domestic manufacturing, and the benefits of an inclusive, clean-energy economy for next-generation lighting solutions in commercial buildings.