The ageing Eraring coal-fired power station will close in 2029, a two-year delay that could undermine investment in solar, wind, storage and transmission.
The risk of power blackouts remains if necessary security infrastructure can't be sped up to come online in time for a major coal generator to shutter.
The energy market operator says gas may be vital for the power grid now, but longer-term needs are becoming less clear and Ukraine is adding to uncertainty.
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