Compilation Overview (Guideline)

WikiCarbon, the free product carbon footprint repository
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WikiCarbon is a collective brain trust. Our goal on WikiCarbon is to compile Product Carbon Footprint (PCF) assessments that are comprehensive and rigorous enough to serve as definite and reliable guides for consumers.[1] Most assessments compiled in WikiCarbon will be Streamlined Assessments, particularly in the short term, as explained in the Progression matrix.

Editors are responsible for: (1) honoring and following the Steps to Compile (below), (2) showing their work (e.g., calculations, assumptions, etc.), and (3) providing sources/citations. Here is WikiCarbon's Mission; and Core Principles. The following rules facilitate standardization and cross-comparability; which supports collaboration, reliability, versatility, including for benchmarking purposes, and ensures that assessments are accessible and the information retrievable -- all of which build user confidence in this collective brain trust.

The quickest and easiest way to start?

The PCF Load can be used to prepare one or more assessments for a one-time (automatic) upload.[2]

Steps to Compile

On WikiCarbon, you can compile Product Carbon Footprint (PCF) assessments for both general and brand-specific goods and services ("products"). For general products (i.e., not brand-specific) only Streamlined Assessments can be prepared. For brand-specific product, assessments can be prepared that rely on the Streamlined or Product Standard instructions.

Become an Editor

Request account: Set up an account! Anyone with basic training (resources to be provided soon) who wants to compile assessments can become an Editor. Email us at join[at]wikicarbon[.]org to let us know that you want to join and contribute. Note that verifying assessments on WikiCarbon requires more extensive editing privileges; for which editors must provide their legal name and certificates/proof of qualification to validate their expertise.[3]

Start Contributing

  1. Create: Create a new PCF Assessment (page) using the WC-Compliant (Manual) Template.
  2. Load: Alternatively, use the PCF Load to prepare one or more assessments for one-time (automatic) upload.[2]
  3. Category-tag: Tag the page Category in accordance with the WikiCarbon Classification System.[4]
  4. Assessment Identifier: Assign the page an Assessment Identifier (AI) in accordance with the WikiCarbon Classification System.[4]
  5. Compile the assessment: Compile/prepare the Assessment using either the Streamlined PCF or Product Standard PCF guidelines to create WC-Compliant Assessments (all three links duplicated below). This includes honoring all the rules section of either guideline, depending on whether the assessment prepared relying on Streamlined or Product Standard instructions.
  6. Status: Once the Assessment is complete -- including the [VI] Final calculation, [VII] Live Carbon Inventory Table, Infobox, and all steps above -- mark the statement as being "complete" and no longer "in progress," using the "Status" template, at the top of the page, as per the Identifiers (Guideline). Assessments on WikiCarbon should only be marked "Verified" by Administrative Editors; as such, this Identifier should remain unchecked.
  7. Notify: PCF[at]wikicarbon[.]org -- and let us know that you've finished preparing your Assessment.
  8. Share: Share your work with your family and friends!

Template & Guidelines

Other Resources





  1. Adapted from (Graevel 1998, p. 87). Graebel, Thomas E. Streamlined Life-Cycle Assessment. Bell Laboratories, Lucent Technologies. Upper Saddle River, NJ. Prentice-Hall, Inc., 1998. Note on the Author: Dr. Thomas E. Graedel is Clifton R. Musser Professor Emeritus of Industrial Ecology, Professor Emeritus of Chemical Engineering, at the Yale School of Forestry & Environmental Studies. Professor Graedel was elected to the U.S. National Academy of Engineering in 2002.
  2. 2.0 2.1 Assessments prepared using the PCF Load (Template) can be made WC-Compliant.
  3. Examples of proof of qualification include: Certificates of course completion for the Product Life Cycle Standard Online Course through GHG Protocol; or Life Cycle Assessment Training and Essential Carbon Footprint Training through Circular Ecology; or Certified Lifecycle Assessment Reviewer (CLAR) through the American Center for Life Cycle Assessment (ACLCA).
  4. 4.0 4.1 Both the Assessment Identifier (AI) and Category tag can and should be assigned to a PCF Assessment (page) regardless of completion, i.e., even when the PCF Assessment is in progress (underway). Assigning both the AI and Category tag is critical to support indexing on WikiCarbon, and is required for WC-Compliance, as per the WikiCarbon Classification System (WCS).