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Modelling Household Energy Consumption and Energy Efficiency Behaviours

The Analytical Services Unit is currently undertaking an analysis of household level data from the ABS 2012 Household Energy Consumption Survey (HECS) to determine the factors that influence household energy consumption and examine the factors that influence household energy efficiency modification actions and intentions.

The analysis aims to contribute to a better understanding of the relationship between household energy use, their energy efficiency behaviours and other characteristics and factors.

HECS surveyed approximately 12,000 households between January and December 2012 and included an online component which allowed energy information to be collected up to the end of March 2013. The scope of the survey was usual residents of private dwellings in urban and rural areas of Australia (excluding very remote areas), covering about 97% of the people living in Australia. The sample was collected using a stratified, multistage clustered design.

HECS provided a large number of energy related items ranging from household energy sources, expenditure, consumption, behaviours, perceptions as well as dwelling characteristics and household heating and cooling practices. Energy efficient modifications such as installations of insulation or other energy efficient heating and cooling systems, window treatments, solar panels and replacements of household appliances were also collected by HECS.

The modelling of household energy consumption employs a log-linear model. The results show statistically significant effects from household income, energy price, family composition, dwelling characteristics and climatic conditions on total domestic energy consumption (made up of electricity, mains gas and bottled gas).

The analysis of the determinants of household energy efficiency improvement behaviours utilises logistic regression models. The results indicate that modification actions are impacted by socio-demographic factors. Household income, family composition, home ownership and dwelling characteristics (e.g. dwelling type and age) are important determinants of the adoptions of energy efficiency measures. Factors such as energy saving efforts and past modification actions play a significant role in motivating household energy efficiency behaviours.

Further Information
For more information, please contact Kay Cao (07 3222 6467, kay.cao@abs.gov.au)

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