Climate Change (Stationary Energy and Industrial Processes) Regulations 2009

50 Method of calculating emissions in relation to purchasing natural gas

(1)

Emissions for the year in relation to each of the following quantities of opt-in natural gas must be calculated in accordance with the standard formula in subclause (3), the field specific formula in subclause (4), or the unique emissions factor formula in subclause (4A):

(a)

each class of natural gas (other than LPG, propane, or butane) purchased by the person in the year; and

(b)

each class of natural gas (other than LPG, propane, or butane) exported by the person in the year.

(2)

Emissions for the year in relation to each of the following quantities of natural gas must be calculated in accordance with the formula in subclause (5):

(a)

LPG, propane, or butane purchased by the person in the year; and

(b)

LPG, propane, or butane exported by the person in the year.

(3)

The standard formula for the calculation of emissions under this regulation is—

E = (mC × EFC × C) + (D × EFM+N)

where—

C

is the total number of tonnes of the quantity of natural gas, as recorded under regulation 49(1)(a) or (b)

D

is the total terajoules of the quantity of natural gas, as recorded under regulation 49(1)(c)(i)

E

is the emissions from the quantity of natural gas

EFC

is the emissions factor for carbon content from table 9 in Schedule 2

EFM+N

is,—

(a)

in relation to a class of natural gas for which no unique emissions factor is in force, the aggregate emissions factor for CH4 and N2O emissions for natural gas expressed in tCO2e/TJ from table 5 of Schedule 2:

(b)

in relation to a class of natural gas for which a unique emissions factor for CH4 and N2O is in force, the unique emissions factor

mC

is the mass fraction of carbon in the quantity of gas as recorded under regulation 49(1)(c)(ii).

(4)

A person may calculate emissions for a class of opt-in natural gas under the following field specific formula, if the field is listed in table 10 in Schedule 2:

E = EFfieldn × D

where—

D

is the total terajoules of the quantity of natural gas, as recorded under regulation 49(1)(c)(i)

E

is the emissions from the quantity of natural gas

EFfieldn

is the emissions factor for the relevant natural gas field from table 10 in Schedule 2.

(4A)

A person may calculate emissions for a class of opt-in natural gas under the following unique emissions factor formula, if the EPA has approved the use by that person of a unique emissions factor for calculating emissions in relation to that class of opt-in natural gas:

E = EFUEF × D

where—

D

is the total terajoules of the quantity of natural gas, as recorded under regulation 49(1)(c)(i)

E

is the emissions from the quantity of natural gas

EFUEF

is the unique emissions factor that the EPA has approved the person to use when calculating emissions in relation to that class of opt-in natural gas.

(5)

Emissions for LPG, propane, or butane must be calculated in accordance with the following formula:

E = A × EF

where—

A

is the total number of tonnes of natural gas of the class purchased by the person in the year, as collected under regulation 49(1)(a)

E

is the emissions for the class of natural gas in tonnes

EF

is,—

(a)

if the class of natural gas is a class of LPG with a propane content other than 60% by volume, the emissions factor for the class calculated in accordance with subclause (6); and

(b)

in any other case, the emissions factor for the class of natural gas from table 4 in Schedule 2.

(6)

For the purposes of subclause (5), the emissions factor for a class of LPG with a propane content other than 60% by volume, must be calculated as follows:

EF = (OFGAS × EFLPG) + EFM+N

where—

EF

is the emissions factor for the class of LPG in tCO2e/t

EFLPG

is the carbon dioxide emissions factor for LPG calculated as follows:

EFLPG = 3.029 − {(18.09 × VPRO) ÷ [572.6 − (65.9 × VPRO)]}

where—

vPRO

is the volume fraction of propane in the LPG

EFM+N

is the aggregate emissions factor for CH4 and N2O emissions for natural gas expressed in tCO2e/t from table 5 in Schedule 2

OFGAS

is the oxidation factor for gas (other than flared) from table 5 in Schedule 2.

(7)

Total emissions from the activity of purchasing natural gas for the year must be calculated as follows:

TE = Σ(EP) − Σ(EE) − S × EFavge

where—

EE

is the emissions from each class of opt-in natural gas exported by the person in the year, as calculated under subclause (3), (4), (4A), or (5)

EFavge

is the national average emissions factor for natural gas from table 10 of Schedule 2

EP

is the emissions from each class of opt-in natural gas purchased by the person in the year, as calculated under subclause (3), (4), (4A), or (5)

S

is the figure calculated in accordance with Schedule 3

TE

is the total emissions for the activity of purchasing natural gas from 1 or more participants who mine natural gas where the total natural gas purchased exceeds 2 petajoules per year in tonnes.

(8)

If a person who is required to comply with this regulation is required to submit an emissions return for a period other than a year, this regulation applies with any necessary modifications.

Regulation 50(1): amended, on 1 January 2016, by regulation 6(1) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2015 (LI 2015/218).

Regulation 50(4) formula item E: inserted, on 1 January 2016, by regulation 6(2) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2015 (LI 2015/218).

Regulation 50(4A): inserted, on 1 January 2016, by regulation 6(3) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2015 (LI 2015/218).

Regulation 50(7) formula: replaced (with effect on 1 January 2010), on 25 September 2010, by regulation 14(1) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2010 (SR 2010/340).

Regulation 50(7) formula item EE: amended, on 1 January 2016, by regulation 6(4) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2015 (LI 2015/218).

Regulation 50(7) formula item EFavge: inserted (with effect on 1 January 2010), on 25 September 2010, by regulation 14(2) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2010 (SR 2010/340).

Regulation 50(7) formula item EP: amended, on 1 January 2016, by regulation 6(5) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2015 (LI 2015/218).

Regulation 50(7) formula item S: replaced (with effect on 1 January 2010), on 25 September 2010, by regulation 14(3) of the Climate Change (Stationary Energy and Industrial Processes) Amendment Regulations 2010 (SR 2010/340).