Putting 100% renewables in perspective

Although valuable, AEMO's 100% renewables modelling has been criticised for not be able to be put the figures into context. When done so, the 2050 renewable scenarios appear very similar in cost to most alternatives.

AEMO’s recent modelling of 100 per cent renewables has been widely applauded as a ground-breaking analysis by an electricity system operator of the technical and economic option of 100 per cent renewable electricity supply. Although acknowledged as valuable, the modelling has been criticised for not including a ‘reference case’, and for not including the ‘trajectory costs’ (the cost of progressively constructing a power system over time, rather than all in a single year). We provide in this article an estimate of the trajectory costs, to allow meaningful comparisons with previous studies to put these figures in context.

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