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List emission factors

Query Parameters

Maximum number of resources to return, between 1 and 100.


A cursor for use in pagination.

after is an object ID that defines your place in the list.

For instance, if you make a list request and receive 100 objects, ending with foo, your subsequent call can include after=foo in order to fetch the next page of the list.


Search for emission factors (case insensitive). A combination of semantic and keyword search is used to provide the most relevant results.

sourcearray of enum

Filter emission factors based on source. When omitted, all sources are returned.

publication_yeararray of number

Filter emission factors based on the publication year.

regionarray of string

Filter emission factors based on region (case insensitive). The value must be an exact match. When omitted, all regions are returned.

Countries are included in regions but there are also broader geographic regions like Europe or Asia.


Filter emission factors based on the logical unit. When omitted, all units are returned.


Whether or not there are more elements available after this set.

If false, this set comprises the end of the array.

Part of a paginated response.

dataarray of objectrequired

An array of Emission Factor objects, ordered by best match.

Part of a paginated response.

  • GET /emission-factors
  • curl '' \
      -H 'Authorization: Bearer <API_KEY>'
  • Response
  • {
      "has_more": true,
      "data": [
          "id": "ljmkOq7vXd238gAE9WALWQ8ZGVD5ExNz",
          "name": "Steel Pipe",
          "source": "exiobase",
          "source_version": "1.0",
          "publication_year": 2021,
          "numerator_unit": "t",
          "denominator_unit": "GBP",
          "created_at": "2022-09-01T00:00:00.000Z",
          "region": "region"