How do we calculate your number?

Transport
Car, SUV, People Mover, Motorbike

Calculations are based on emissions factors from the 2020 Australian National Greenhouse Accounts Factors. Average distances have been sourced from the Australian Bureau of Statistics Survey of Motor Vehicle Use 2020. Average fuel economy has been calculated based on data from the Australian Government’s Green Vehicle Guide.

Energy

Calculations are based on emissions factors from the 2020 Australian National Greenhouse Accounts Factors. Averages consumption values have been calculated based on data from the Australian Bureau of Statistics Household and Family Projections 2016 to 2041 and the Department of the Environment and Energy’s Australian Energy Update 2020.

Water

Calculations are based on emissions factors from the 2020 Australian National Greenhouse Accounts Factors. Average water consumption has been calculated based on data from the Bureau of Meteorology’s National Performance Report 2018-19: Urban Water Utilities.

Travel

Calculations for air and train travel are based on emissions factors from the UK Government’s GHG Conversion Factors for Company Reporting 2020. Average travel speed is based on data from the Environmental and Energy Study Institute and is taken to be 835 km/hr and 250 km/hr for air and train travel, respectively.

Calculations for cruise ships are based on emissions factors from the research paper ‘Carbon emissions from international cruise ship passengers‘ travel to and from New Zealand’ by Howitt et. al. Average cruising speed is taken to be 20 knots. Average time spent cruising is taken to be 12 hours/day.

Road Trips

Calculations for road trips are based on emissions factors from the 2020 Australian National Greenhouse Accounts Factors. Average fuel economy has been calculated based on data from the Australian Government’s Green Vehicle Guide.

Coach, Air and Train

Calculations for coach, air and train travel are based on emissions factors from the UK Government’s GHG Conversion Factors for Company Reporting 2020. Average travel speed is taken to be 80km/hr, 835km/hr and 250km/hr for coach, air and train travel, respectively.

Cruise Ship

Calculations for cruise ships are based on emissions factors from the research paper ‘Carbon emissions from international cruise ship passengers’ travel to and from New Zealand‘ by Howitt et. al. Average cruising speed is taken to be 20 knots. Average time spent cruising is taken to be 12 hours/day.

Food & Drink

Calculations are based on emissions factors from Life Cycle Strategies’ Food, Grocery & Services Footprint Calculator. Average food spend has been calculated based on data from the Australian Bureau of Statistics Household Expenditure Survey 2015-16. Figures have been adjusted for inflation using the Reserve Bank of Australia’s Inflation Calculator.

Waste

Calculations are based on emissions factors from the 2020 Australian National Greenhouse Accounts Factors. Volume to weight conversions have been calculated using the South Australian Government’s Green Industries Solid Waste and Recycling Reporting Template.