Kulamavu Dam is one of the major power projects operating on the River Periyar, the largest river in Kerala. The project is funded by the Government of Canada and is supported by the waters of the Cheruthoni and Idukki dams. The water of the dam is directed through a power tunnel that runs on two underground pressure shafts. After passing through these shafts, the water reaches an underground power station that is located in the Muvattupuzha Valley. The power house of the plant has a capacity of generating around 780 MW per day, comprising six units of 130 MW each. The potential head on which the project operates is at a height of around 2,500 ft above sea level.