Issues

• SWDM v4 segments differ from total with green hosting

  thegreenwebfoundation/co2.js#295 · Filter by author MaciejZet opened on Oct 26, 2026

• README links to IIFE files missing from the npm package

  thegreenwebfoundation/co2.js#294 · Filter by author MaciejZet opened on Oct 24, 2026

• parseCSVRow splits a cell that contains a pipe

  thegreenwebfoundation/co2.js#291 · Filter by author MaciejZet opened on Sep 27, 2026

• Review marginal intensity data

  thegreenwebfoundation/co2.js#275 · Filter by author fershad opened on Feb 3, 2026
  1

• Add subpath exports for estimation models

  designingroadmap
  Feature

  thegreenwebfoundation/co2.js#271 · Filter by author fershad opened on Dec 2, 2025 · 0.20

• Green hosting.check() method implementation inconsistent between Node CommonJS and ESM

  thegreenwebfoundation/co2.js#266 · Filter by author dotjay opened on Nov 14, 2025
  4

• Can we move to the Node Test Runner?

  help wanted
  thegreenwebfoundation/co2.js#254 · Filter by author fershad opened on Mar 3, 2025
  1

• Add a server-side estimation model to CO2.js

  roadmap
  thegreenwebfoundation/co2.js#234 · Filter by author fershad opened on Oct 14, 2024
  1

• Add integrations with national/regional/local grid data APIs

  datadesigningfunding-requiredroadmap
  thegreenwebfoundation/co2.js#233 · Filter by author fershad opened on Oct 14, 2024

• Add a model object to trace function outputs

  designingenhancementroadmap
  thegreenwebfoundation/co2.js#232 · Filter by author fershad opened on Oct 14, 2024
  1

• Add a basic Software Carbon Intensity (SCI) implementation

  designinghelp wantedroadmap
  thegreenwebfoundation/co2.js#231 · Filter by author fershad opened on Oct 14, 2024
  1

• See if adding AYUPM (As Yet Unnamed Power Model) to CO2.js is feasible

  enhancement
  thegreenwebfoundation/co2.js#218 · Filter by author mrchrisadams opened on Jul 8, 2024

• Switch to a plugin style approach to exposing models in CO2.js

  designingfunding-requiredroadmap
  thegreenwebfoundation/co2.js#206 · Filter by author fershad opened on May 9, 2024
  3

  

• Add type-check and type-emit steps for type annotation code to the current js code

  thegreenwebfoundation/co2.js#199 · Filter by author mrchrisadams opened on Mar 15, 2024
  2

• Consider updating our test matrix to support other js runtimes like Deno, or Bun, and so on

  thegreenwebfoundation/co2.js#176 · Filter by author mrchrisadams opened on Oct 16, 2023
  2

• Consider residual carbon intensity as data we make available

  thegreenwebfoundation/co2.js#171 · Filter by author mrchrisadams opened on Sep 14, 2023
  2

• Add GreenFrame to CO2.js

  enhancementroadmap
  thegreenwebfoundation/co2.js#145 · Filter by author fzaninotto opened on May 19, 2023
  5

• Investigate how suitable DIMPACT model is for use in CO2.js

  help wantedroadmap
  thegreenwebfoundation/co2.js#141 · Filter by author mrchrisadams opened on May 3, 2023
  1

• The use of data as a proxy in the Sustainable Web Design model

  thegreenwebfoundation/co2.js#138 · Filter by author mgifford opened on Apr 29, 2023
  19

• Allow developers to access real-time grid intensity data through Electricity Maps

  datafunding-requiredroadmap
  thegreenwebfoundation/co2.js#134 · Filter by author fershad opened on Mar 6, 2023
  9

  

• Document release process better for pushing changes to NPM

  thegreenwebfoundation/co2.js#116 · Filter by author mrchrisadams opened on Oct 7, 2022
  1

• Test compatibility of CO2.js in with other js runtimes

  good first issue
  thegreenwebfoundation/co2.js#115 · Filter by author mrchrisadams opened on Oct 7, 2022
  14

  

• Improve the robustness of the test suite

  thegreenwebfoundation/co2.js#98 · Filter by author mrchrisadams opened on Aug 12, 2022
  15

  

• Review 1byte model and update implementation.

  help wanted
  thegreenwebfoundation/co2.js#68 · Filter by author mrchrisadams opened on Apr 1, 2022

• Notes for recognising the use of fossil-free energy

  thegreenwebfoundation/co2.js#61 · Filter by author mrchrisadams opened on Feb 9, 2022
  2