First, this study should kill off, once and for all, claims made here and in many other places (notably, at Brave New Climate) that the intermittency of renewable electricity is an insuperable problem.[1] The AEMO is the body that manages the electricity market on a minute-to-minute basis, so it has the expertise to assess this claim, unlike the many amateurs who have tried their hands. And, since it might have to do the job, it has no reason to understate the difficulties of a renewables-based system.

Second, the estimate cost of $111 to $133 per megawatt-hour represents an increase of $60-80/MwH on current wholesale prices, or 6-8c/Kwh on retail prices. That’s much less than the increase we’ve seen thanks to the mishandling of electricity market reform. If we wound back those costs, we could actually end up with both 100 per cent renewables and cheaper electricity.

Third, although the study envisages a role for electric vehicles, it doesn’t present a full-scale program for decarbonization. But once you have a scalable, fully renewable electricity supply, everything else is comparatively easy.

Finally, if we take Tony Abbott at his word in wanting direct action to deal with climate change, this report provides him with a blueprint. If we want to, we can eliminate the great majority of domestic CO2 emissions simply by mandating renewable technology and electric vehicles. The cost would be substantial in dollar terms ($250 billion for the electricity component). But, over a couple of decades, it would be a barely detectable deduction from growth in national income…… http://johnquiggin.com/2013/05/07/decarbonising-australia/