Olkiluoto 3 is a nuclear power plant located in Finland. It is part of the Olkiluoto Nuclear Power Plant complex and is notable for being the first European Pressurized Reactor (EPR) to begin operation. Construction started in 2005, and the plant was officially connected to the grid in March 2022, providing a significant boost to Finland's energy production. The reactor has a net electrical output of approximately 1,600 megawatts, making it one of the largest nuclear reactors in the world. Olkiluoto 3 aims to enhance energy security and reduce carbon emissions, contributing to Finland's commitment to sustainable energy solutions.