TAS1 · NEM — 30-min calculation
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Tasmania has the most distinctive generation mix in the NEM, with hydroelectric power supplying over 90% of the state's electricity. This gives Tasmania the lowest carbon intensity and the most stable wholesale prices of any Australian region. The state's hydro fleet — including Gordon, Poatina, Reece, and numerous smaller stations — provides fully dispatchable renewable generation.
Wind generation supplements the hydro fleet, with farms at Musselroe, Woolnorth, and other sites contributing during periods of strong wind. Together, hydro and wind regularly deliver 100% renewable generation for extended periods — a milestone that remains rare in other NEM regions.
The Basslink HVDC cable connects Tasmania to Victoria, allowing the state to export surplus hydro generation when prices are high on the mainland, or import electricity when dam levels are low. The direction and magnitude of Basslink flows significantly influence Tasmania's effective generation mix.