ISO/IEC 21031:2024
(Main)Information technology — Software Carbon Intensity (SCI) specification
Information technology — Software Carbon Intensity (SCI) specification
This document describes a methodology for calculating the rate of carbon emissions for a software system; that is, its SCI score. The purpose of this score is to increase awareness and transparency of an application's sustainability credentials. The score will help software practitioners make better, evidence-based decisions during system design, development, and deployment, that will ultimately minimize carbon emissions. A reliable, consistent, fair and comparable measure allows targets to be defined during development and progress to be tracked.
Technologies de l’information — Spécification relative à l’intensité carbone logicielle
General Information
Buy Standard
Standards Content (Sample)
International
Standard
ISO/IEC 21031
First
Information technology — Software
edition
Carbon Intensity (SCI) specification
2024-03
Technologies de l’information — Spécification relative à
l’intensité carbone logicielle
Reference number
ISO/IEC 21031:2024(en) © ISO/IEC 2024
---------------------- Page: 1 ----------------------
ISO/IEC 21031:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO/IEC 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/IEC 21031:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Software sustainability actions . 2
5 Procedure . 2
6 Methodology summary . 2
6.1 General .2
6.2 Operational emissions .3
6.2.1 General .3
6.2.2 Energy .3
6.2.3 Location-based marginal carbon intensity .3
6.3 Embodied emissions .3
6.4 Functional unit conversion .4
7 Software boundary . 5
8 Functional unit . 5
9 Quantification method .
...
International
Standard
ISO/IEC 21031
First edition
Information technology — Software
2024-03
Carbon Intensity (SCI) specification
Technologies de l’information — Spécification relative à
l’intensité carbone logicielle
PROOF/ÉPREUVE
Reference number
ISO/IEC 21031:2024(en) © ISO/IEC 2024
---------------------- Page: 1 ----------------------
ISO/IEC 21031:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
© ISO/IEC 2024 – All rights reserved
ii
---------------------- Page: 2 ----------------------
ISO/IEC 21031:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Software sustainability actions . 2
5 Procedure . 2
6 Methodology summary . 2
6.1 General .2
6.2 Operational emissions .3
6.2.1 General .3
6.2.2 Energy .3
6.2.3 Location-based marginal carbon intensity .3
6.3 Embodied emissions .3
6.4 Functional unit conversion .4
7 Software boundary . 5
8 Functional unit . 5
9 Quantification method .
...
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