Electricity Calculators

Comprehensive Electricity

Location-based CO2-e(t) = Q * EF / 1000
where
Q = total electricity in kWh
EF = location-based emission factor for the relevant scope (e.g. Scope 2 or Scope 3) (kg CO2-e / kWh)

Market-based CO2-e(t) = Q * (1-RPP) * EF / 1000
where
Q = total electricity in kWh
RPP = renewable power percentage (0-1)
EF = market-based emission factor for the relevant scope (e.g. Scope 2 or Scope 3) (kg CO2-e / kWh)

Comprehensive Electricity – Scope 3

Location-based CO2-e(t) = Q * EF3 / 1000
where
Q = total electricity in kWh
EF3 = Scope 3 location-based emission factor for the relevant scope (kg CO2-e / kWh)

Market-based CO2-e(t) = Q * (1-RPP) * EF3 / 1000
where
Q = total electricity in kWh
RPP = renewable power percentage (0-1)
EF3 = Scope 3 market-based emission factor for the relevant scope (kg CO2-e / kWh)

Comprehensive Electricity – Carbon Neutral Offset

Location-based CO2-e(t) = -1.0 * Q * (EF2 + EF3) / 1000
where
Q = carbon neutral electricity in kWh
EF2 = Scope 2 location-based emission factor for the relevant scope (kg CO2-e / kWh)
EF3 = Scope 3 location-based emission factor for the relevant scope (kg CO2-e / kWh)

Market-based CO2-e(t) = -1.0 * Q * (1-RPP) * (EF2 + EF3) / 1000
where
Q = carbon neutral electricity in kWh
RPP = renewable power percentage (0-1)
EF2 = Scope 2 market-based emission factor for the relevant scope (kg CO2-e / kWh)
EF3 = Scope 3 market-based emission factor for the relevant scope (kg CO2-e / kWh)

Comprehensive Electricity – Offset

Location-based CO2-e(t) = 0 (location-based has fixed 0 CO2-e(t) to avoid double-counting of green benefits)

Market-based CO2-e(t) = -1.0 * Q * (EF2 + EF3) / 1000
where
Q = green electricity in kWh
EF2 = Scope 2 market-based emission factor for the relevant scope (kg CO2-e / kWh)
EF3 = Scope 3 market-based emission factor for the relevant scope (kg CO2-e / kWh)

Comprehensive Electricity – Purchased LGCs Offset

Note: quantity of purchased LGCs is entered into Eden Suite as a positive number, and cost is provided as a negative, therefore calculated (Market) CO2-e would be negative due to  * -1.0

Location-based CO2-e(t) = 0 (location-based has fixed 0 CO2-e(t) to avoid double-counting of green benefits)

Market-based CO2-e(t) = -1.0 * Q * (EF2 + EF3) / 1000
where
Q = purchased LGCs in kWh
EF2 = Scope 2 market-based emission factor for the relevant scope (kg CO2-e / kWh)
EF3 = Scope 3 market-based emission factor for the relevant scope (kg CO2-e / kWh)

Comprehensive Electricity – Solar Exported Offset

Note: Previously, quantity of solar exported was provided as a positive number, and cost was provided as a negative, therefore calculated (Market) CO2-e would be negative due to * -1.0

Note: Now, market CO2-e is fixed 0 after Climate Active update:
“Businesses that export electricity to the grid cannot claim this electricity as zero emissions in their carbon account except where LGCs have been created and voluntarily surrendered”

Location-based CO2-e(t) = 0
Market-based CO2-e(t) = 0

HFCs and SF6

https://www.legislation.gov.au/Details/F2022C00737
https://www.legislation.gov.au/F2008L02309/latest/text (Latest version F2024C00833 (C18) 31 August 2024)

National Greenhouse and Energy Reporting (Measurement) Determination 2008

Part 4.5—Industrial processes—emissions of hydrofluorocarbons and sulphur hexafluoride gases

4.102 Method 1

(1) Method 1 is: Ejk = Stockjk * Ljk
where:
Ejk is the emissions of gas type (j), either hydrofluorocarbons or sulphur hexafluoride, summed over each equipment type (k) during a year measured in CO2 e tonnes.
Stockjk is the stock of gas type (j), either hydrofluorocarbons or sulphur hexafluoride, contained in equipment type (k) during a year measured in CO2 e tonnes.
Ljk is the default leakage rates for a year of gas type (j) mentioned in columns 3 or 4 of an item in the table in subsection (4) for the equipment type (k) mentioned in column 2 for that item.

(2) For the factor Stockjk, an estimation of the stock of synthetic gases contained in an equipment type must be based on one of the following sources:

(a) the stated capacity of the equipment according to the manufacturer’s nameplate;
(b) estimates based on:

(i) the opening stock of gas in the equipment; and
(ii) transfers into the facility from additions of gas from purchases of new equipment and replenishments; and
(iii) transfers out of the facility from disposal of equipment or gas.

(3) For equipment type (k), the equipment are the things mentioned in subregulation 4.16(1) of the Regulations.

(4) For subsection (1), columns 3 and 4 of an item in the following table set out default leakage rates of gas type (j), for either hydrofluorocarbons or sulphur hexafluoride, in relation to particular equipment types (k) mentioned in column 2 of the item:

CO2-e(t) = Q * UF * GWP * L
where
Q = quantity of gas (with type j, as above)
UF = unit conversion factor (if quantity is not tonne, unit conversion factor to convert unit of capture to tonne e.g. kg to tonne = 1/1000)
GWP = global warming potential for gas (with type j, as above) (t CO2-e / t)
L = default annual leakage rate for gas (with type j) in relation to equipment (with type k, as specified in the Eden Suite activity calculation configuration setting)