Building nuclear reactors would cost six times more than wind and solar power firmed up with batteries, according to the independent report released on Saturday by the Clean Energy Council.
"We support a clear-eyed view of the costs and time required to decarbonise Australia and right now, nuclear simply doesn't stack up," the industry body's chief executive Kane Thornton said.
Taxpayers needed to understand the decades of costs if they were forced to foot the bill for building a nuclear industry from scratch, Mr Thornton warned.
The analysis prepared by construction and engineering experts Egis also found nuclear energy had poor economic viability in a grid dominated by renewable energy.
Renewable energy will provide 82 per cent of the national electricity market under current targets for 2030, which is at least a decade before any nuclear could theoretically be operational.
Further, nuclear power stations are not designed to ramp up and down to align with renewable energy generation.
Adding to the cost challenges, Australia has no nuclear energy industry because it is prohibited under commonwealth and state laws, which would all need to be changed.
Mr Thornton said the analysis confirmed that building nuclear power stations instead of renewables would cause power prices to "explode".
The analysis was based on the CSIRO's GenCost 2023-24 consultation draft, the Mineral Council of Australia's Small Modular Reactors study and the industry benchmark Lazard Levelized Cost of Energy Report.
These reports did not include waste management and decommissioning of a nuclear plant in cost calculations, which meant the true cost could be even higher, Mr Thornton said.
11°C