The average Australian homeowner could save $6000 in energy bills over 30 years if their home insulation was increased to levels beyond the current national standard, research by infrastructure group Pitt & Sherry has shown.

The analysis of the energy efficiency of Australian homes found minimum requirements for insulation under current building regulations are not the most cost effective, and could result in nationwide savings of $312 million over 30 years, if increased.



In NSW, residents could save $80 million over 30 years, while Victoria could save up to $91 million over the same period.



Western Australian homeowners could benefit the most, with a saving of around $100 million, whereas Queensland would not record any savings, as its standards are already close to cost-optimal levels.

"There is a huge potential for a very large number of Australian homes, which currently have insufficient insulation," said Tony Westmore​, general manager of the Australian Alliance for Energy Productivity, who partnered with Knauf Insulation and the Association of Wall and Ceiling Industries for the research.