One Big Chart: how does the cost of nuclear power compare to renewables?

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Peter Dutton has suggested Australia should build large-scale nuclear reactors, but CSIRO’s GenCost report shows the price compared to solar and wind

The opposition leader, Peter Dutton, has revived the idea of Australia lifting its restriction on nuclear power, but has yet to provide any details apart fromNuclear power from either large-scale reactors or small modular reactors is far more expensive than electricity generated with renewables, according to the report. This is true even when factoring in the the cost of building transmission and storage infrastructure to support large scale wind and solar.

Large-scale nuclear is estimated to cost between $141 and $233/MWh in 2030, with small modular reactors estimated to be $230 to $382/MWh. Electricity from a combination of solar and wind would cost between $73 and $128 a megawatt hour, depending on how much renewable energy was already in the system. The chart uses the highest and lowest shares that the CSIRO modelled – 60% and 90% of the system, respectively.

This is the first time the GenCost report is estimating the cost of large scale nuclear reactors in Australia. One of the assumptions of the estimations is that an ongoing nuclear industry is established – the actual early costs are likely to be even higher than these estimates.

 

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