The subsidisation of home solar systems in Australia has been a "policy mess" according to a new report, with capital costs outpacing benefits by in excess of $9 billion.

A new report claims that large-scale government subsidization of household solar systems has come at immense cost to taxpayers and vastly outweighed any benefits. According to the report by the Grattan Institute the total cost involved in the creation of over one million home solar installations around the country has…