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Software Carbon Intensity (SCI) Specification [v.alpha]

A specification that describes how to calculate a carbon intensity for software applications.

Created and managed by the Standards Working Group in the greensoftware.foundation.

Project Scope

This document, the Software Carbon Intensity technical specification, describes how to calculate the carbon intensity of a software application. It describes the methodology of calculating the total carbon emissions and the selection criteria to turn the total into a rate that can be used to achieve real-world, physical emissions reductions, also known as abatement.

Electricity has a carbon intensity depending on where and when it is consumed. An intensity is a rate. It has a numerator and a denominator. A rate provides you with helpful information when considering the growth of a software product. This specification describes the carbon intensity of a software application or service.

Getting Started

  • The development version of the specification is here.
  • The latest published version of the specification is here.
  • The dev branch contains the current version that is being worked on and the main branch contains the latest published version.
  • Check the issues tab for active and closed conversations regarding the spec.

GitHub Training

Contributing

The recommended approach for getting invlved with the specification is to:

  • Read the development version of the specification.
  • Raise an issue, question, recommendation in the issues tab above and start a discussion with other members.
  • Once a form of agreement has been reached, then raise a pull request to update the specification with your recommended changes.
  • Let others know about your pull request by either commenting on the relevant issue or posting in the Standards Working Group slack channel.
  • Pull requests are reviewed and merged during Standards Working Group meetings.
  • Only chairs of the Standards Working Group can merge pull requests.

Versioning

Copyright

Standard WG projects are copyrighted under Creative Commons Attribution 4.0.

License

Standard WG projects are licensed under the MIT License - see the LICENSE.md file for details.

Patent

Standard WG projects operate under the W3C Patent Mode.

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