The Loviisa power plant was the first nuclear power plant in Finland. The power plant has two units: unit 1 started operating in February 1977, and unit 2 in November 1980. The units are VVER-440 type pressurized water reactors.
The Loviisa power plant was a multicultural project, in which West and East co-operated in the field of nuclear technology for the first time. The degree of domestic origin was approximately 50%. The reactor, turbine, generator and other main components are from the former Soviet Union. Safety systems, control systems and automation systems are of Western origin. The steel containment and its related ice condensers were manufactured using Westinghouse licences.
The Loviisa power plant was built to meet the most developed Western safety standards. Safety and operability is continuously improved by major modification projects.