The Imatra hydropower plant, completed in 1929, is located in the centre of the city of Imatra. It is the largest power plant in Finland. It has a capacity of 192 MW and a head of 24 metres. It has one Kaplan and six Francis turbines. The average annual output is sufficient to supply just over 50 000 households with electricity for heating.

Image: imatra.kuvat.fi.