The continued uptake of photovoltaic rooftop solar in Australia, even as subsidies have declined, has sparked debate on whether the centrally dispatched electricity industry model is at the beginning of a death spiral.
Bruce Mountain of Climate Spectator estimates that the life-cycle average cost of electricity produced by the 899,017 PV systems installed between 2010 and 2012 is $162/MWh. This compares to the nation-wide average household electricity price around $320/MWh.
In other words, for households in Australia that installed PV during the period from 2010-12 it costs, on average, half as much to produce electricity from a PV system than it does to purchase electricity from the electricity grid.
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