VIC1 · NEM — 30-min calculation
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Victoria's generation mix has been dominated by the Latrobe Valley brown coal generators for decades. Yallourn and Loy Yang A and B remain the state's largest generators, providing baseload output that gives Victoria one of the most carbon-intensive grids in the NEM when these plants are running at capacity.
Wind generation is the primary counterweight to coal in the Victorian mix. The state hosts the largest installed wind capacity in Australia, concentrated across western Victoria. During periods of strong wind, these farms can supply 30-40% of Victoria's electricity, substantially reducing the brown coal share and pushing wholesale prices to very low or negative levels.
As brown coal plant retirements progress, the generation mix is shifting. Battery storage is beginning to contribute during peak demand periods, and solar — while less dominant than in sunnier northern states — is growing steadily.