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NATIONAL GREENHOUSE AND ENERGY REPORTING REGULATIONS 2008 - REG 2.02

Definition of carbon dioxide equivalence --values specified for determining carbon dioxide equivalence

    For the definition of carbon dioxide equivalence in section   7 of the Act, the value specified in relation to a kind of greenhouse gas is the value specified as the Global Warming Potential for that greenhouse gas mentioned in an item of the following table.

 

Values specified for determining carbon dioxide equivalence

Item

Greenhouse gas

Chemical formula

Global Warming Potential (GWP)

1

Carbon dioxide

CO 2

1

2

Methane

CH 4

28

3

Nitrous oxide

N 2 O

265

4

Sulphur hexafluoride

SF 6

23,500

5

HFC - 23

CHF 3

12,400

6

HFC - 32

CH 2 F 2

677

7

HFC - 41

CH 3 F 2

116

8

HFC - 43 - 10mee

C 5 H 2 F 10

1,650

9

HFC - 125

C 2 HF 5

3,170

10

HFC - 134

C 2 H 2 F 4 (CHF 2 CHF 2 )

1,120

11

HFC - 134a

C 2 H 2 F 4 (CH 2 FCF 3 )

1,300

12

HFC - 143

C 2 H 3 F 3 (CHF 2 CH 2 F)

328

13

HFC - 143a

C 2 H 3 F 3 (CF 3 CH 3 )

4,800

14

HFC - 152a

C 2 H 4 F 2 (CH 3 CHF 2 )

138

15

HFC - 227ea

C 3 HF 7

3,350

16

HFC - 236fa

C 3 H 2 F 6

8,060

17

HFC - 245ca

C 3 H 3 F 5

716

18

Perfluoromethane (tetrafluoromethane)

CF 4

6,630

19

Perfluoroethane (hexafluoroethane)

C 2 F 6

11,100

20

Perfluoropropane

C 3 F 8

8,900

21

Perfluorobutane

C 4 F 10

9,200

22

Perfluorocyclobutane

c - C 4 F 8

9,540

23

Perfluoropentane

C 5 F 12

8,550

24

Perfluorohexane

C 6 F 14

7,910

 

Note 1:   Global Warming Potential (also known as GWP) is defined in the Glossary published by the UNFCCC as an index representing the combined effect of the differing times greenhouse gases remain in the atmosphere and their relative effectiveness in absorbing outgoing infrared radiation.

Note 2:   The Global Warming Potential figures in the above table represent the findings published by the Intergovernmental Panel on Climate Change in its Fifth Assessment Report. The Fifth Assessment Report could in 2020 be viewed on the Intergovernmental Panel's website (https://www.ipcc.ch).


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