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Definitie

GHG Protocol Product Life Cycle Accounting and Reporting Standard

The GHG Protocol Product Life Cycle Accounting and Reporting Standard sets requirements for measuring and reporting greenhouse gas emissions and removals attributable to one product across its defined life cycle, in CO2e per unit of analysis.

What is the GHG Protocol Product Life Cycle Accounting and Reporting Standard?

The 2011 Product Standard measures emissions and removals for one good or service from raw materials through production, transport, storage, use and end of life. A company inventory instead totals emissions across an organization and reporting period.

Why does the GHG Protocol Product Standard matter to you?

A customer may ask for a product carbon footprint rather than your company total. They may check the unit, life-cycle boundary, period, data, emission factors, allocation, exclusions and result by stage. A company total does not answer this.

How does the GHG Protocol Product Standard work?

Chapter 6 requires a reported unit and reference flow, the product amount behind that unit. Chapter 7 requires all product-related processes inside the boundary, a process map and justified exclusions. For owned or controlled processes, Chapter 8 requires primary data and a data-quality assessment. Chapter 9 says to avoid splitting shared-process emissions. Chapter 11 requires total CO2e per unit and the percentage by life-cycle stage.

What mistakes should you avoid?

  • Sending a corporate Scope 1, 2 and 3 inventory when the customer asked for one product.
  • Giving a result without the unit of analysis, reference flow or boundary.
  • Deducting offsets or avoided emissions from the inventory result.
  • Hiding shared-process allocation, proxies or excluded processes.

Can GHG Protocol Product Standard results compare two products?

No. Comparable claims need consistent product rules, units, boundaries, data and allocation. GHG Protocol says the standard alone finds life-cycle emission hotspots; it does not prove one product is better.

What should you send when a customer asks for a Product Standard footprint?

Send the result with the product description, unit, reference flow, process map, boundary, period, data and factor sources, allocation, exclusions, uncertainty and stage results. State whether it is cradle-to-gate, up to your gate, or cradle-to-grave, through end of life. Use the boundary named in the customer request or reporting requirement.

Example

Suppose an automotive tier-2 parts supplier in Poland receives an order-level request for 12,000 steel sensor brackets. It defines the reference flow as 1,000 finished brackets and uses a cradle-to-gate boundary because the brackets are intermediate products.

Its clearly hypothetical stage results are 1,620 kg CO2e for materials, 90 kg for inbound transport, 240 kg for forming and coating, and 30 kg for packaging. The total is 1,980 kg CO2e for 12,000 brackets. Dividing by 12 gives 165 kg CO2e per reference flow of 1,000 brackets, or 0.165 kg CO2e per bracket. This example tests the reporting unit and stage total, so it does not introduce an emission factor.

Where it comes up

GHG Protocol Product Standard unit of analysis and reference flowProduct Life Cycle Accounting and Reporting Standard, Chapter 6, requirements on pages 27-29Official sourceGHG Protocol Product Standard life-cycle boundary, process map and exclusionsProduct Life Cycle Accounting and Reporting Standard, Chapter 7, requirements on pages 33-37Official sourceGHG Protocol Product Standard primary data, data quality and allocationProduct Life Cycle Accounting and Reporting Standard, Chapters 8-9, requirements summarized on pages 15-16Official sourceGHG Protocol Product Standard inventory results per unit and life-cycle stageProduct Life Cycle Accounting and Reporting Standard, Chapter 11 section 11.2, requirements on pages 85-87Official source

Related terms

GHG Protocol

The GHG Protocol is a suite of standards for deciding which greenhouse gas emissions belong in a company inventory, classifying them as Scope 1, 2 or 3, calculating them, and reporting the methods and boundaries used.

Product carbon footprint (PCF)

A product carbon footprint (PCF) is the greenhouse gas emissions assigned to one product across a stated life-cycle boundary and expressed per declared or functional unit.

Emission factor

An emission factor converts a measured activity, such as kilowatt-hours of electricity or litres of fuel, into greenhouse gas emissions by stating the emissions released per unit of that activity.

Scope 3 Emissions

Scope 3 emissions are the indirect greenhouse gas emissions from goods, services, transport, product use, investments, and other upstream and downstream activities outside your company's Scope 1 and Scope 2 boundary.

GHG Protocol Land Sector and Removals Standard

The GHG Protocol Land Sector and Removals Standard sets corporate inventory rules for agricultural land emissions, biogenic products, land and geologic carbon storage, and optional CO2 removals, with traceability, monitoring, uncertainty, and separate-reporting safeguards.

GLEC Framework

The GLEC Framework sets a common method for calculating and reporting freight and logistics-hub greenhouse gas emissions, including operations and the upstream production and delivery of their fuel or electricity.

Sources

  • GHG Protocol

    Product definition, unit of analysis, boundary, data quality, allocation, inventory results and reporting requirements

    2026-08-20

  • GHG Protocol

    Current Product Standard owner page, product-level purpose and limits on product comparisons

    2026-08-20

  • GHG Protocol

    Existing standards remain in effect while ISO and GHG Protocol develop harmonized standards

    2026-08-20

Sources checked 2026-08-20

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GHG Protocol Product Life Cycle Accounting and Reporting Standard Definition | Keslio