# Methods for Measurement

**Method 1** **–** default values for emissions factors (EF) and energy content (EC) are applied to quantities of fuel

E_{ij} = (Q_{i} x EC_{i} x EF_{ijoxec}) / 100

where:

E_{ij} is the emissions of gas type (j), (carbon dioxide, methane or nitrous oxide), from fuel type (i) (CO_{2}-e tonnes).

Q_{i} is the quantity of fuel type (i) (tonnes).

EC_{i} is the energy content factor of the fuel (gigajoules per tonne) according to each fuel.

If Q_{i} is measured in gigajoules, then EC_{i} is 1.

EF_{ijoxec} is the emission factor for each gas type (j) (which includes the effect of an oxidation factor) for fuel type (i) (kilograms of CO_{2}-e per gigajoule) according to each fuel.

**Method 2 –** same as 1 however EC & EF use test results from sampled fuel sources, tested in accordance with approved standards / laboratory method

**Method 3 –** same as 2 but with sampling also completed in accordance with approved standards

**Method 4 – ** Constant emissions monitoring ( CEM) or Periodic Emissions

Measurement (PEM)

## Criteria for measuring fuel consumed

**Criterion A –**Invoices**Criterion AA –**Invoices corrected for stockpile adjustments**Criterion AAA –**Direct Measurement at Point of Combustion**Criterion BBB –**Measured in Accordance to Industry Standard- Incidental Reporting

## Emission calculations

CO_{2}eq_{(fuel)} = Q_{(fuel)} x [ [ ECF_{(fuel)}] x ([EF_{CO2}] + [EF_{CH4}] + [EF_{N2O}] ) ] /1000

CO_{2}eq – Carbon dioxide (equivalent) emissions (tonnes CO2e)

Q_{(fuel)} – Amount of Fuel (use units to match units of ECF)

ECF_{(fuel)} – Energy Content Factor for relevant fuel (from Schedule 1, MD)

EF_{CO2} – Emission Factor for CO2 for relevant fuel (from Schedule 1, MD)

EF_{CH4} – Emission Factor for CH4 for relevant fuel (from Schedule 1, MD)

EF_{N2O} – Emission Factor for N2Ofor relevant fuel (from Schedule 1, MD)

## Schedule 1

#### Measurement Determination

#### Fuel Factors

## Example Calculation

Calculate the CO_{2} equivalent emissions from the combustion of

250,000L of LPG

CO_{2}eq_{(fuel)} = Q_{(fuel)} x [ [ ECF_{(fuel)}] x ([EF_{CO2}] + [EF_{CH4}] + [EF_{N2O}] ) ] /1000.

Calculate the CO_{2} equivalent emissions from the combustion of

980,000 GJ of Natural Gas

CO_{2}eq_{(fuel)} = Q_{(fuel)} x [ [ ECF_{(fuel)}] x ([EF_{CO2}] + [EF_{CH4}] + [EF_{N2O}] ) ] /1000.