Software Carbon Intensity Specification

A specification that describes how to calculate a carbon intensity for software applications.
https://github.com/Green-Software-Foundation/sci

Category: Consumption
Sub Category: Computation and Communication

Keywords from Contributors

green-software sustainable-software climate green-ai green-computing sustainability sustainable-ai community green-software-foundation gsf

Last synced: about 19 hours ago
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Repository metadata

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

Host: GitHub
URL: https://github.com/Green-Software-Foundation/sci
Owner: Green-Software-Foundation
License: other
Created: 2021-06-30T10:35:32.000Z (almost 4 years ago)
Default Branch: main
Last Pushed: 2024-09-15T14:34:44.000Z (7 months ago)
Last Synced: 2025-04-18T22:19:43.455Z (9 days ago)
Language: HTML
Homepage:
Size: 554 KB
Stars: 276
Watchers: 22
Forks: 55
Open Issues: 12
Releases: 2
Metadata Files:
- Readme: README.md
- Citation: CITATION.cff

Software Carbon Intensity (SCI) Specification

A specification that describes how to calculate a carbon intensity score 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 how to design, develop, and deploy software applications. 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

Getting started with GitHub

Contributing

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

Read the development version of the specification.
Raise an issue, question, or recommendation in the issues tab above and start a discussion with other members.
Once 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

We use Semantic Versioning for 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.

Feedback

Citation (CITATION.cff)

cff-version: 1.2.0
message: "If you use this standard, please cite it as below."
authors:
- family-names: "Green Software Foundation"
  given-names: ""
title: "Software Carbon Intensity Standard"
version: 1.0.0
date-released: 2021-11-01
url: "https://github.com/green-software-foundation/software_carbon_intensity"

Owner metadata

Name: Green Software Foundation
Login: Green-Software-Foundation
Email:
Kind: organization
Description: The Green Software Foundation is a non-profit with the mission to create a trusted ecosystem of people, standards, tooling and best practices for green software
Website: https://greensoftware.foundation
Location:
Twitter:
Company:
Icon url: https://avatars.githubusercontent.com/u/84547728?v=4
Repositories: 22
Last ynced at: 2023-03-03T23:14:56.837Z
Profile URL: https://github.com/Green-Software-Foundation

GitHub Events

Total

Watch event: 12
Pull request event: 1
Fork event: 2

Last Year

Watch event: 12
Pull request event: 1
Fork event: 2

Committers metadata

Last synced: 7 days ago

Total Commits: 156
Total Committers: 16
Avg Commits per committer: 9.75
Development Distribution Score (DDS): 0.699

Commits in past year: 4
Committers in past year: 1
Avg Commits per committer in past year: 4.0
Development Distribution Score (DDS) in past year: 0.0

Name	Email	Commits
Asim Hussain	a**m@c**v	47
Sean Mcilroy	s**y@o**g	27
Abhishek Gupta	3****k	24
buchananwp	w**l@b**m	16
Henry-WattTime	3****e	15
Sean Mcilroy	s**y@l**g	11
Sara Bergman	4****n	4
Vaughan Knight	v**n@v**m	3
Srinivasan	s**n@m**m	2
holanita	1****a	1
dani	d**t@g**m	1
Ninassi Benjamin	b**i@g**m	1
Mitsuru Kariya	M**a@n**m	1
Jaime Iniesta	g**b@j**m	1
Dan Lewis-Toakley	d**y@g**m	1
Chris Lloyd-Jones	1****y	1

Committer domains:

Issue and Pull Request metadata

Last synced: 2 days ago

Total issues: 126
Total pull requests: 131
Average time to close issues: about 1 month
Average time to close pull requests: 13 days
Total issue authors: 32
Total pull request authors: 25
Average comments per issue: 3.3
Average comments per pull request: 1.99
Merged pull request: 106
Bot issues: 0
Bot pull requests: 0

Past year issues: 3
Past year pull requests: 4
Past year average time to close issues: N/A
Past year average time to close pull requests: 3 days
Past year issue authors: 3
Past year pull request authors: 3
Past year average comments per issue: 0.67
Past year average comments per pull request: 0.25
Past year merged pull request: 3
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/Green-Software-Foundation/sci

Top Issue Authors

dschien (27)
buchananwp (15)
atg-abhishek (13)
seanmcilroy29 (12)
jawache (8)
Henry-WattTime (8)
Sealjay (5)
srini1978 (5)
varnepalli1 (5)
vaughanknight (3)
Green-Software (2)
navveenb (2)
patricekrakow (2)
YaSuenag (1)
martinlippert (1)

Top Pull Request Authors

jawache (26)
Henry-WattTime (26)
seanmcilroy29 (21)
atg-abhishek (12)
srini1978 (9)
buchananwp (6)
benlogan (5)
Sealjay (4)
navveenb (3)
SaraEmilyBergman (2)
GadhuNTTDATA (2)
RexJaeschke (2)
bninassi (1)
dsubject (1)
YaSuenag (1)

Top Issue Labels

documentation (45)
medium (29)
action-item (25)
high (21)
requirements-constraints (19)
low (12)
question (12)
sci-feedback (9)
SCI v1.0 (8)
software-boundaries (8)
Case-study submission (6)
consistency review (6)
alpha (6)
help-wanted (6)
Next version (4)
problem-definition (4)
characteristics (4)
dictionary (3)
minor-2 (3)
FAQ (3)
discussion (2)
major-3 (2)
sci-update (1)
good-first-issue (1)

Top Pull Request Labels

documentation (47)
medium (27)
high (17)
requirements-constraints (13)
minor-2 (11)
minor-0 (7)
consistency review (7)
SCI v1.0 (5)
major-3 (4)
low (3)
alpha (3)
software-boundaries (2)
minor-1 (2)
ISO Submission (2)
sci-update (2)
action-item (1)
Case-study submission (1)
help-wanted (1)
characteristics (1)
problem-definition (1)

Dependencies

.github/workflows/deploy.yml actions

actions/checkout v3 composite
actions/configure-pages v3 composite
actions/deploy-pages v2 composite
actions/setup-node v2 composite
actions/upload-pages-artifact v2 composite

package-lock.json npm

113 dependencies

package.json npm

@tailwindcss/typography ^0.5.10 development
gray-matter ^4.0.3 development
marked ^9.0.0 development
nodemon ^3.0.1 development
tailwindcss ^3.3.3 development

Score: 8.435549202375727

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