The most powerful laser in the world is operational, it's called Eli - Physics and Mathematics. With the power of 10 Petawatts, i.e.
10 million billion watts, the Eli laser "is a unique infrastructure of its kind, with a new generation of lasers that could have applications in many fields" The technology underlying the laser promises to have important implications in many sectors, such as the biomedical one, the production of fuels for new nuclear fission systems, the reduction of waste from power plants, the elimination of debris space.