CSIRO's latest GenCost report reveals nuclear power in Australia could cost up to six times more than renewables, with estimates ranging from $163/MWh to $264/MWh compared to $120/MWh for renewables. The agency also warns nuclear plants would take at least 15 years to build, likely finishing post-2040, far behind political promises. Despite Coalition claims, CSIRO maintains that 'firmed' solar and wind remain Australia's most cost-effective energy solution.