Australia's oldest coal-fired power plant was shuttered Friday, as the country -- a once-notorious climate straggler -- prepares for a seismic shift towards renewable energy. Besides being inefficient, highly polluting and expensive to repair, the continued widespread use of coal-fired power plants would make Australia's climate targets almost impossible to meet. Australia's oldest coal-fired power plant was shuttered Friday, as the country -- a once-notorious climate straggler -- prepares for a seismic shift towards renewable energy. Besides being inefficient, highly polluting and expensive to repair, the continued widespread use of coal-fired power plants would make Australia's climate targets almost impossible to meet. And although Australia is planning to clean up its domestic energy market, the economy is still fuelled by exports of coal and gas.