It is now just over 20 years since John Howard introduced a renewable energy policy which required wind/solar-generated electricity to be incorporated within energy retailers’ total supply. This gave those sources of energy a de facto subsidy. That basic subsidy presently is $50 per megawatt hour for large-scale solar and wind – rather more than the total price of generated energy formerly experienced – and $40 per megawatt hour for rooftop solar.

John Howard recognised the error he had made and that subsidised energy would, if allowed to expand, undermine the electricity supply’s economics.