Indirect Emissions Supply Chain

[/business/supplychain]

This section allows users to estimate emissions from the supply chain of a variety of Products. The data is based on the most recent Defra conversion factors. The emission factors used in this category cover indirect emissions from the supply chain only and include contributions from CO₂, CH₄, N₂, HFCs, PFCs and SF₆. Therefore, these factors are unlike most emission factors, which deal with direct emissions.

Emission Factor Origin

This category is intended for use as a high-level diagnostic tool and is not a replacement for more specific information if available.

The emission factors here are based on the amount spent (in pounds sterling excluding VAT) on each group of products and include the raw material extraction, processing, manufacturing, transportation and packaging. These factors are derived from a multi-region model, so take some account of emissions relating to imported goods. The results derived here can be combined with direct emission calculations (e.g. those relating to actual fuel use) to provide full life-cycle emissions.

The factors are based on a model of the economy, known as the input-output model, which describes in monetary terms how the goods and services produced by different sectors of the economy are used by other sectors to produce their own output. These monetary accounts are linked to information about the greenhouse gas emissions of different sectors of the economy. By using the input-output model, these emissions are then attributed to the monetary transactions taking place in the economy. The result is an estimate of the total upstream emissions associated with the supply of a particular product group. The input-output tables used here are in 2006 basic prices; therefore, it will be advisable to take subsequent price changes into account when using this category. Changes in the supply chain since this time should also be taken into account.

How to use this category

Selecting an emissions scenario

Use the drill-down productCategory to chose the product type you wish to calculate emissions for.

Specifying activity data

The amountSpent, in pounds sterling, must then be set as a profile item value.

Results and calculation

The quantities returned represent the greenhouse gas emissions associated with the quantities and refrigerant type specified. The following quantities are returned:

CO2: quantity of CO₂ emissions
ch4CO2e: quantity of CH₄ emissions expressed in terms of CO₂e
n2oCO2e: quantity of N₂O emissions expressed in terms of CO₂e
hfcCO2e: quantity of HFC emissions expressed in terms of CO₂e
pfcCO2e: quantity of PFC emissions expressed in terms of CO₂e
sf6CO2e: quantity of SF₆ emissions expressed in terms of CO₂e
totalCO2e: total, combined CO₂e emissions

Notes

CO₂e quantities

Emissions in this methodology are pre-converted into CO₂e. These conversions are not made by CarbonKit.

	UID	Label
	WVSE7CVOJ3Q1	agriculture products
	QB1B1NNW82YZ	air transport
	KMZGORPCZ8KY	ancillary transport services
	4DZECYFEWKM9	articles of concrete and stone etc
	B9B6Q3P48U7X	auxiliary financial services
	73J4D667CKSB	banking and finance
	GMNK6LF73BF1	cement, lime and plaster
	5P7IJQLGBIV3	ceramic goods
	HJQ30WRU0GGJ	coal and lignite and peat
	JWHR7RH7H4A7	computer services
	N2VZMBBRC58Y	construction
	RSRX6HXWA74F	crude petroleum and natural gas
	Y4Q066MG8X2Q	education
	TGL5SCRBLHBG	electrical machinery
	3P2119O37M1E	fertilisers
	HQZJFUS51EDO	fish products
	8PHIGGT3GRWI	food and drink products
	NMUTC1GD80MU	forestry products
	JAUS033YX2HB	furniture and other manufactured goods and recycling services
	2K6NP67QBSR2	glass and glass products

Name: Indirect_Emissions_Supply_Chain

Full path: /business/supplychain

Parent Category: Business

Provenance: DEFRA

calculation defra defra_annex8 emission_factor indirect lca supply_chain UK