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GHG Entries are detailed records of the ex-post CO₂e fluxes in your project’s operations, that result in a positive removal or GHG reduction for all or part of your project over a given time period. They may also include an allocated proportion of a project’s project establishment and end-of-life emissions.

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GHG entry definition

Projects may determine which activities to include within the boundary of a specific GHG Entry, however all project flux data (sequestrations, losses, counterfactuals, activities and reductions) must be allocated to a GHG entry to be accounted for. GHG entries must be individually creditable: that is, each must have a net negative total in terms of removals or GHG reductions.
Examples:
  • A CDR process with a product injection stage might report data per injection
  • A continuous process might report daily or weekly totals as individual GHG entries
  • A project with multiple sites of operation might separate GHG entries geographically and temporally
A GHG statement can contain one or more GHG entries: data across all GHG entries is provided to the verifier once the statement is submitted.

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Crediting GHG entries

GHG entries are verified after being submitted as part of a GHG Statement. After issuance, each GHG entry will correspond to a distinct batch of credits. This means that, for example, credits generated from a specific process or area within a project, can be delivered to specific buyers with interest in that area. The credit vintage of the issued batch will be the year that the end date of the GHG entry falls in. If activities on a project span more than one year and a supplier wishes to issue credits with vintages from earlier years, the activities should be reported across multiple GHG Entries with end dates in the corresponding years.

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Alignment with GHG statements

A GHG entry is automatically assigned to a GHG statement if the end date of the GHG entry falls within the reporting period dates of the statement. GHG statement reporting periods form a single unbroken timeline covering the project’s lifetime. The GHG statement reporting period dates should be planned according to when a project intends to credit specific activities.
Constraints to be aware of:
  • A new GHG entry cannot be submitted for verification if its end date falls into a reporting period that has already been verified
  • GHG statements cannot be created that overlap with other GHG statements or that leave an unreported gap in the project timeline
Example alignment of GHG entries with GHG statements

Example alignment of GHG entries and GHG statements for a project operating across 3 areas

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Create a GHG entry

Draft GHG entries are shown in the GHG entries section of Certify. If a GHG entry has been allocated to a draft GHG statement it will also be visible there. GHG entries that are part of verified GHG statements are not shown in the GHG entries section and should be accessed via the relevant verified GHG statement. To create a new GHG entry:
1

Add a GHG entry

In an existing GHG Statement, or in the GHG Entries section of your project on Certify, click the Add GHG entry button.
GHG entries can be created before or after GHG statements. We recommend that non-API users create GHG statements first as this ensures that Project emissions are calculated and shown on any included GHG entries.
2

Load template

Select a template to pre-populate the GHG entry with the components, fixed inputs (such as emission factors) and component descriptions required for calculations.
3

Set reporting period

Provide a start and end date for your GHG entry.
4

Edit components

If your specific GHG entry doesn’t match your regular template schema, you can add, delete or update components as needed to match your reporting requirements.
If a component is accounted for over multiple GHG entries, an attribution factor can be assigned accordingly. For example, if a single transport leg transported feedstock for two production batches, an attribution factor of 0.5 can be assigned to the component on each GHG entry.
5

Enter input values

For each datapoint input, add measurements relevant to your current reporting period.If multiple units (e.g. kg and tonnes) are supported for the given input, you can select your preferred unit from the dropdown.
6

Define measurement uncertainty

Where there is material uncertainty for the value of a given input, the standard deviation for the measurement should be entered in the +/- column. This could be due to:
  • Known uncertainty for a measurement device
  • Use of values from a probability distribution with a known variance
7

Upload sources

Measurements should be evidenced with source files. These may include:
  • Documentation such as bills of landing
  • Spreadsheets containing data behind aggregate calculations
  • Scientific citations for use of given approaches or emission factors
The net CO₂e result is recalculated and the GHG entry is saved automatically each time an input is updated.

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API users

GHG entries can also be automated via API integration. Prefer the Post GHG Entry endpoint reference and the Creating Your First GHG Entry tutorial when building a new integration.
The older removal* and removal_template* API endpoints remain available as deprecated compatibility aliases while existing integrations migrate.
If creating GHG entries via an API integration, the GHG entry template schema can be queried from GET GHG entry templates or set in the API request, allowing you to define your LCA structure in your local stack or via an MRV partner platform.