TVO is organized into three business units: production operations, the Olkiluoto 3 project, and Posiva.
Corporate services support the actual business operations. Engineering Services produces technical expertise and design services. Support Services produces other services that support business operations, such as HR management, financial services, communications, assistant services, IT support, and procurement and logistics services.
The Safety function manages and implements the programs and plans used to ensure the safety of the nuclear facilities.