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| Gordon Power Station | |
|---|---|
| Name | Gordon Power Station |
| Location | Lake Gordon, Tasmania, Australia |
| Status | Operational |
| Commissioning | 1978 |
| Owner | Hydro Tasmania |
| Operator | Hydro Tasmania |
| Reservoir | Lake Gordon |
| Plant type | Hydroelectric |
| Turbines | 4 × 125 MW Francis |
| Capacity | 500 MW |
| Annual generation | ~1,455 GWh |
Gordon Power Station Gordon Power Station is a large hydroelectric facility located on the Gordon River system in south-western Tasmania, Australia. Commissioned in the late 1970s as part of the Upper Gordon development, it forms a core component of Tasmania's electricity infrastructure alongside Poatina Power Station, Devonport, and other Hydro Tasmania assets. The station is fed by Lake Gordon and linked to the King River catchment and is notable for its underground construction and association with the controversial Gordon-below-Franklin Dam proposals.
The project emerged from mid-20th century proposals to harness the hydro potential of Tasmania's western highlands, influenced by studies involving the Snowy Mountains Scheme and international consultants from British Columbia and Norway. Planning accelerated in the 1960s and 1970s under the Tasmanian Hydro-electric Commission during the premiership of Eric Reece, intersecting with national debates led by figures connected to the Franklin River controversy and environmental organizations such as the Australian Conservation Foundation and the Tasmanian Wilderness Society. The scheme's construction period overlapped with major political events including interventions by the Whitlam and Hawke federal administrations and litigation before the High Court of Australia.
Design work integrated tunnel engineering practiced on projects like the Thomson Dam and techniques from the Alpine tunnelling programs of New Zealand. Civil works included an earth-fill embankment forming Lake Gordon and an underground cavern complex housing the power station, excavated by contractors with expertise from Kværner-linked contractors and mining engineers influenced by practices at Mount Isa. Construction logistics relied on staging roads from Gordon River Road and accommodation camps similar to those used on the Pieman River scheme. The main dam and intake structures adopted design principles comparable to the Gordon River Diversion and incorporated rock mechanics assessments from consultants who had worked on the Jinsha River projects.
The station contains four vertical-shaft Francis turbines driving synchronous generators, rated at approximately 125 MW each, producing a combined installed capacity near 500 MW—comparable to units at Clutha Power Station and Kafue Gorge. The underground powerhouse is accessed via a headrace tunnel and tailrace tunnels that discharge into the Gordon River system; penstock and surge shaft designs reflect standards used on the Colbún and Kariba projects. The hydraulic head is derived from the reservoir level of Lake Gordon and managed alongside the adjacent Lake Pedder operations. Auxiliary systems include excitation equipment by firms analogous to Siemens or General Electric, switchgear compatible with TasNetworks transmission standards, and a station control room integrated with the Hydro Tasmania SCADA network.
Gordon Power Station operates as a base-load and peak-shaving asset in concert with Tasmania's interconnected grid and the Basslink interconnector to mainland Australia. Annual generation has varied with hydrological conditions, producing roughly 1,300–1,600 GWh in typical years, similar in role to Kingston Power Station in system balancing. Operational tactics follow reservoir management protocols influenced by research from institutions such as the University of Tasmania and the CSIRO, and coordination with the Australian Energy Market Operator during interconnector outages. Maintenance regimes include periodic turbine overhauls, cavern inspections, and sediment management reflecting practices at Snowy Hydro facilities.
The creation of Lake Gordon and associated inundation altered peatland, eucalypt and button grass ecosystems, echoing impacts documented in studies of the Franklin River and Gordon River catchments. The early controversy stimulated legislative and conservation responses involving the Australian Heritage Commission and culminated in stronger protections for Tasmanian wilderness areas under federal heritage processes. Mitigation measures have included habitat surveys by researchers from the Tasmanian Parks and Wildlife Service, water quality monitoring aligned with standards from the Environment Protection and Biodiversity Conservation Act 1999 era, and managed releases to support downstream tidal and estuarine environments comparable to programs on the Upper Murray and Murray-Darling systems.
Ownership and operation reside with Hydro Tasmania, a state-owned corporation created from the former Hydro-electric Commission during restructuring analogous to reforms affecting State Energy Corporations in other Australian jurisdictions. Corporate governance follows Tasmanian statutory instruments and reporting to ministers such as past premiers including Harry Holgate and later administrations. Commercial arrangements interact with the National Electricity Market and contractual interfaces with TasNetworks and major industrial customers formerly typified by agreements with alumina and mining companies that influenced Tasmania's industrial policy.
The project sits within a landscape of significant cultural and natural heritage, intersecting with Aboriginal connections of the Palawa people and colonial histories recorded in Tasmanian archives and museums like the Tasmanian Museum and Art Gallery. The Franklin-Gordon debates elevated the area to national prominence, inspiring works by artists associated with the Tasmanian Landscape School and activism led by figures who later received recognition such as listings on heritage registers and awards from organizations like the Australian Conservation Foundation. Interpretive materials at regional visitor centres reference the engineering achievements alongside the contested environmental legacy, drawing parallels with heritage narratives evident at sites like the Murray River hydro complexes.
Category:Hydroelectric power stations in Tasmania Category:Buildings and structures in Tasmania Category:Hydro Tasmania