Many are surprised to learn how much software contributes to carbon emissions. It's not just the hardware in the data centres; the code we write could also be more efficient. By the end of this session, I will have given you three areas you can consider to reduce your software’s carbon footprint and next steps if you want to learn more.

1. @DanielVaughan https://greensoftware.foundation
Green Software
for a Sustainable Future
Daniel Vaughan @ IBM Z Day 2023

2. @DanielVaughan https://greensoftware.foundation
Daniel Vaughan

3. @DanielVaughan https://greensoftware.foundation

4. @DanielVaughan https://greensoftware.foundation

5. @DanielVaughan https://greensoftware.foundation

6. @DanielVaughan https://greensoftware.foundation
The digital world
creates more carbon
emissions than
aviation
Globally, data
centres use as much
electricity as South
Korea
Data centres
typically only run at
25% capacity
https://www.greenit.fr/wp-
content/uploads/2019/11/GREENIT_EENM_etude_EN_accessible.pdf
https://www.iea.org/energy-system/buildings/data-centres-and-data-transmission-networks

7. @DanielVaughan https://greensoftware.foundation
“A typical microwave oven uses more
electricity keeping its digital clock on
standby than it does heating food.”

8. @DanielVaughan https://greensoftware.foundation
The tech industry
significantly
contributes to carbon
emissions
Data centres alone
consume vast
amounts of energy
Poor utilisation
results in even more
wasteful energy
consumption

9. @DanielVaughan https://greensoftware.foundation
Right thing to do Cost
advantage
Competitive
advantage
Why bother?
Recruitment
advantage

10. @DanielVaughan https://greensoftware.foundation
Scope 1
(burning)
Scope 2
(consuming)
Scope 3
(embodied)
Greenhouse Gas (GHG) Protocol

11. @DanielVaughan https://greensoftware.foundation
Offsetting Avoidance Elimination Neutralisation

12. @DanielVaughan https://greensoftware.foundation
mark@deepgreen.energy

13. @DanielVaughan https://greensoftware.foundation
Carbon neutral Net zero Carbon
negative
Carbon Commitments

14. @DanielVaughan https://greensoftware.foundation
Carbon
awareness
Hardware
efficiency
Energy
efficiency
Green Software Principles

15. @DanielVaughan https://greensoftware.foundation
Carbon Awareness
Time shifting Location
shifting

16. @DanielVaughan https://greensoftware.foundation
Hardware Efficiency
Utilisation Consolidation

17. @DanielVaughan https://greensoftware.foundation
Energy Efficiency
Efficient hardware Efficient code

18. @DanielVaughan https://greensoftware.foundation

19. @DanielVaughan https://greensoftware.foundation
Build
awareness
Develop skills Measure impact
What next?

20. @DanielVaughan https://greensoftware.foundation
Daniel Vaughan
https://www.linkedin.co
m/in/danielpvaughan/
https://greensoftware.foundation
Thank You

21. October 18, 2023
IBM TechXchange Virtual Event
Green Software for a
Sustainable Future
Daniel Vaughan