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    This activity requires access to two Internet sites: a carbon emissions calculator and a school emissions calculator.

    Students can use the online calculator to calculate and compare the amount of CO2 produced by different energy sources. The school emissions calculator requires some input of known and monitored resources uses at school and is interesting to use over longer periods of time, to think about and evaluate a reduction of carbon-based emissions.

    Instructions

    With a global focus on climate change and carbon emissions, it is interesting to find out what sort of fossil fuels produce the most CO2.

    By using this simple online calculator, you can compare natural gas, coal, oil, petrol, diesel and the generation of electricity to see how many tonnes of CO2 each energy resource produces. Each different resource can be measured in a number of different units (for example, litres or tonnes). However, for ease of comparison, it is suggested that you use the unit GJ (gigajoule) for all energy resources.

    Quantity

    Reference unit

    Is equal to

    Is equal to

    Unit

    1

    gigajoule

    =

    1

    gigajoule

    1

     

    =

    1,000

    megajoule

    1

     

    =

    1,000,000

    kilojoule

    1

     

    =

    1,000,000,000

    joule

    Useful links

    Download this 2020 report Review of Carbon Accounting Tools for New Zealand Application. It provides a review of carbon accounting calculators for households, primarily those developed in New Zealand.

      Published 10 June 2008, Updated 19 August 2020 Referencing Hub articles