Tumut Hydroelectric Power Station, Hydroelectric power station in New South Wales, Australia

Tumut Hydroelectric Power Station is a group of three hydroelectric power stations on the Tumut River in New South Wales, Australia. Two of the stations are underground and one is above ground, and together they are part of the Snowy Mountains Scheme.

The first station was completed in 1959, the second in 1962, and the third in 1973. The third station was the first major pumped storage hydroelectric power station in Australia and was upgraded in 2012.

The name Tumut comes from the local Aboriginal word for the river, and the stations are a key part of the Snowy Mountains Scheme, a project that changed the region. Today, the scheme is remembered as a major engineering effort that brought people from many countries to work in the area.

The stations are in a remote mountain area, so visitors should plan ahead and check access conditions. The underground stations are not open to the public, but the surrounding landscape and the above-ground station can be seen from nearby roads.

The first 330 kV transmission lines in New South Wales were commissioned at Tumut 1 in the 1950s, and the cables were made in England. The original transformer at Tumut 1 weighed over 80 tonnes and had to be brought in pieces and assembled on site.