Fortum Oyj is a Finnish state-owned energy company headquartered in Espoo, Finland, specializing in the generation and sale of electricity and heat primarily in the Nordic region. Formed in 1998 from the merger of Imatran Voima and Neste Oy, it operates a diverse portfolio of power plants, including over 150 hydropower facilities in Finland and Sweden, the Loviisa nuclear power plant, and stakes in Swedish nuclear assets like Oskarshamn and Forsmark. Fortum produces combined heat and power through cogeneration plants and supplies district heating networks spanning thousands of kilometers across the Nordics and Poland. The company serves over 2 million electricity and gas customers, offering retail services, digital solutions, and decarbonization support for industries, with 99% of its 2025 power generation from renewable and nuclear sources, achieving one of Europe's lowest CO₂ emissions profiles. Fortum also provides waste management, recycling, soil remediation, and electric vehicle charging services, while advancing solar initiatives in India and environmental targets for a carbon-neutral future. As the third-largest power generator in the Nordics as of 2023, it plays a pivotal role in regional energy security and the transition to sustainable electrification.