Tasmania's Historic Tarraleah Hydropower Scheme Undergoes Multi-Billion-Dollar Overhaul
One of Tasmania's oldest and most trusted hydropower systems is set to undergo a significant transformation, with Hydro Tasmania initiating the initial phase of its construction tender. This ambitious project will revitalize the 85-year-old Tarraleah scheme, located in the Central Highlands, at an estimated cost of several billion dollars.
The aging 90MW power station will be replaced by a state-of-the-art 190MW facility, capable of generating a substantial increase in energy output from the same water source. This upgrade will also include a new water transfer system, ensuring efficient and sustainable operations.
Commissioned in the 1930s, the Tarraleah scheme currently produces approximately 630 gigawatt hours annually, contributing around 6.5% to Hydro Tasmania's total energy production. However, the aging infrastructure has led to limited options, according to Hydro Tasmania's CEO, Rachel Watson.
"The Tarraleah scheme has been a loyal and dedicated service provider for over 85 years. Yet, it is reaching the end of its operational lifespan, and we cannot afford to stand idly by," Watson stated. "The tender process will help us secure construction costs and make an informed investment decision."
The project's success hinges on securing environmental and planning approvals, as well as parliamentary approval. The rebuilt Tarraleah scheme will offer enhanced flexibility, rapidly increasing energy production when wind and solar generation decline. This adaptability is crucial for grid reliability as renewable energy sources expand, as confirmed by the Australian Energy Market Operator.
Hydro Tasmania is also actively pursuing a separate 750MW pumped hydro project at Cethana. Additionally, the company recently acquired the historic Tarraleah Village in 2023 for $11.2 million, planning to accommodate construction workers. This village, built in the 1930s to house the original workforce, was previously sold as a tourism venture about two decades ago.
This multi-billion-dollar overhaul of the Tarraleah scheme is a testament to Tasmania's commitment to sustainable energy solutions and the preservation of its rich hydropower heritage.
