Green Software FoundationStandards / Software Carbon Efficiency Rating

Standards / Software Carbon Efficiency Rating


This project aims to develop a standard for a benchmark platform and test metrics for evaluating the carbon efficiency of software. The initiative will provide comparable scores for software with the same functionality, informing procurement decisions and potentially shaping regulations similar to ENERGY STAR or EPA Fuel Economy Ratings.


This standard is targeted toward individuals who use software either as a standalone product or as a service. By providing a rating system for carbon efficiency, consumers will be able to make informed decisions when choosing between similar offerings, such as music streaming services. Large organizations' procurement departments will also benefit from this rating system when making decisions about service contracts or software purchases. Additionally, software companies can use this rating system as a marketing tool to compete based on the efficiency of their offerings.

  • PM: Sean Mcilroy (LI) | Green Software Foundation

  • Chair: Marco Valtas | Thoughtworks

  • Chair: TBC

  • Website: Standards Working Group

  • Repository: SCER repo


Getting Involved

  • Are you ready to join the fun and make a difference? The first thing you should do is go to the GitHub discussions forum and say “Hi” in the Introductions category and/or read & comment on any of the discussions. You can also browse and join any of the lively discussions there. This is the best way to learn and get involved with this awesome working group and the wider GSF community.

  • Do you have a brilliant project idea that you want to share with the world? Then start a discussion on the Ideas board and get the interest of at least three people from 2 different member organisations. You can then reach out to the chairs or PM who will add your idea to the next working group meeting agenda.

  • Our Standards Working Group meets every week on a [tbc].