I don’t know how I missed this, but the Australian Government is offering $1600 to all house owner-occupiers to have ceiling insulation installed. They estimate that it will save up to $200 per house in energy bills, and increase the energy rating of all Australian homes to a minimum of two-stars.
In addition to offering the $1600 to owner-occupiers the government is also offering a $1000 rebates to landlords to encourage them to install ceiling insulation in their rental properties.
Currently about 40% of homes in Australia and New Zealand are not insulated, with Queensland having the lowest percentage of insulation of any state in Australia.
Our house currently has a spray on reflective insulation on the roof, which we also had done to our first house which you can see here, spray on reflective roof insulation. This type of insulation works by reflecting the suns heat, but there is no mass of insulation (like your classic pink bats, or fibreglass insulation) in the ceiling, so the $1600 could be used to insulate the area over the core four upstairs room in the house, although it would definitely cost a lot less than that to do.
You can read more about the free ceiling insulation project from the Australia Government here.