Generation

The Snowy Scheme

Described as one of the civil engineering wonders of the modern world, the Snowy Scheme consists of nine power stations, 16 major dams, 80 kilometres of aqueducts and 145 kilometres of interconnected tunnels.

POWER STATIONS

The Snowy Scheme consists of nine power stations, including two that are underground. 

Tumut 3 Power Station is a pumped-hydro facility which is capable of generating and pumping by recycling water between Talbingo Reservoir and Jounama Pondage. It was the first major pumped-hydro plant built in Australia and remains the largest such facility in Australia today .

After the Scheme was built, two new small hydro stations were constructed on existing Snowy Scheme dams: Jindabyne Mini Hydro Power Station, on Jindabyne Dam, and the Jounama Small Hydro Power Station, on Jounama Dam, to capture the otherwise wasted energy of water releases from these storages. 

The nine Snowy power stations comprise 33 turbines with a total generating capacity of 4,100 megawatts (MW) and produce on average, 4,500 gigawatt-hours of renewable electricity each year.

NAMECAPACITY (MW)NUMBER OF UNITSYEAR OF COMPLETION
Tumut 3 1800 (generating)
600 (pumping)
61973 (upgraded 2012)
Murray 1950101967 (upgrade underway)
Murray 255041969
Tumut 133041959 (upgrade underway)
Tumut 228741962
Blowering8011955
Guthega6021955
Jindabyne Mini Hydro112009
Jounama Small Hydro1412010

The Scheme’s infrastructure also includes the Jindabyne Pumping Station, completed in 1969. This pumps water from Lake Jindabyne through the Jindabyne-Island Bend Tunnel and Snowy-Geehi trans-mountain Tunnel to Geehi reservoir, where the water is used for electricity generation in Murray 1 and Murray 2 power stations.

DAMS

The Snowy Scheme consists of 16 major dams.

NAMETYPEHEIGHT (m)CREST LENGTH (m)GROSS CAPACITY (103m3)YEAR OF COMPLETION
TalbingoRockfill161.5710.0920 6001970
EucumbeneEarthfill116.5579.14 798 4001958
BloweringRockfill112.2807.71 632 4001968
GeehiRockfill94.1265.221 1001966
Tumut PondConcrete Arch86.3217.952 8001959
JindabyneRockfill71.6335.3689 9001967
ToomaEarthfill67.1304.828 1001961
Island BendConcrete Gravity48.8146.33 0201965
Tumut 2Concrete Gravity46.3118.91 5001961
TantangaraConcrete Gravity45.1216.4254 1001960
JounamaRockfill43.9518.243 5001968
Murray 2Concrete Arch42.7131.11 7601968
GuthegaConcrete Gravity33.5139.01 5501955
Happy JacksConcrete Gravity29.076.22701959
Deep CreekConcrete Gravity21.354.951961
KhancobanEarthfill18.31 066.821 5001966

TUNNELS

The Snowy Scheme consists of 145km of inter-connected tunnels and pipelines and 80km of aqueducts.

The Snowy Scheme comprises two main developments, the northern Snowy-Tumut Development and the southern Snowy-Murray Development. Both developments are connected by tunnels to the Snowy Scheme’s main regulating storage, Lake Eucumbene, on the Eucumbene River.

The table below outlines the details of each of the tunnels.

NAMELENGTH (km)% LINEDYEAR OF COMPLETION
Eucumbene-Snowy23.519.71965
Eucumbene-Tumut22.228.31959
Murrumbidgee-Eucumbene16.617.71961
Snowy-Geehi14.513.31966
Tooma-Tumut14.320.01961
Jindabyne-Island Bend9.810.61968
Guthega4.711.61955
Murray 2 Pressure2.41001969
Tumut 1 Pressure2.41001959
Tumut 1 Tailwater1.354.51959
Tumut 2 Pressure11.31001961

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