[inkyoto]

> Australians are able to buy solar panels […] but the cost equation is shifting very quickly.

As of now, Australia has some of the lowest costs of solar panel installation in the world – the federal and state/territory governments have been providing subsidies to households to increase solar energy uptake across the nation, and, as a result, the popularity of solar panels has exploded, driving the costs down.

> If anything I'm surprised that this is happening in an area that hasn't benefited as much from dramatic reductions in electricity costs (places with Wind + Solar without large tariff regimes) rather than Australia […]

Energy costs from a conventional grid have actually more than doubled across Australia (in comparison to 2008). With solar, there was a perverse situation in Australia for a while when households connected to the grid could export the solar-generated electricity and get paid for it, but that did not lower consumer electricity prices, which kept on climbing instead.

More recently, though, paying to export – a limited feature that applies only under certain network tariffs and/or certain retail plans (especially wholesale pass-through plans during negative price periods) – has been introduced, but the battery technology has also caught up.

So with the advent of new battery technology, households have now become awash with an abundance of electricity that they can now use to, e.g., run air-conditioning if not 24x7 then very close to it, which has been a great boon for the last couple of summers when Australia has gone through bursts of severe hotwaves across the country (temperatures varied between mid-40's and as high as +50 degrees Celsius last week in some parts of Adelaide, South Australia).