Environment Variables

Root and Branch and SCI-Web

Environment Variables

Show Notes

Host Chris Adams talks with Adam Newman and Oli Winks of Root & Branch about their new Software Carbon Intensity Web model for measuring the real carbon footprint of websites. They break down why current methods miss the mark, how their bottom-up approach captures actual energy use across servers, networks and devices, and why better measurement can lead to smarter, lower-carbon choices for teams. It’s a candid look at what it really takes to make the web greener, and the tools that can help developers get there. Learn more about our people: Chris Adams: LinkedIn | GitHub | Website Adam Newman: LinkedIn | GitHub | Website Oliver Winks: LinkedIn | GitHub | Website

Find out more about the GSF: The Green Software Foundation Website Sign up to the Green Software Foundation Newsletter

News: Software Carbon Intensity (SCI) Specification | GSF [00:48] Software Carbon Intensity (SCI) For Web: Measuring energy and emissions of web applications [02:03] Kitemill [09:32] Cardamon | Root & Branch [12:56] GitHub - Root-Branch/cardamon-web-model [32:09] Green Metrics Tool | green-coding.io [43:18] Green Software Brighton | Meetup [58:09]

If you enjoyed this episode then please either:

Follow, rate, and review on Apple Podcasts Follow and rate on Spotify Watch our videos on The Green Software Foundation YouTube Channel! Connect with us on Twitter, Github and LinkedIn! Hosted on Acast. See acast.com/privacy for more information.

More from Environment Variables

Oct 8, 2026

Host Chris Adams speaks with Anita Schüttler about certifying green software and the role of standards in making software sustainability more mainstream. They discuss Germany’s Blue Angel certification, Anita’s work on the Holmes search software, and how recognising software’s environmental impact can encourage more sustainable design across the technology industry. Learn more about our people: Chris Adams: LinkedIn | GitHub | Website Anita Schüttler: LinkedIn | Website

Oct 1, 2026

This Week in Green Software, Valeria and Adi explore the sustainability challenges of agentic AI and six ways developers can make AI workflows more efficient. They also discuss the new SCI for Web update, green regions and cloud sustainability, and the upcoming changes to the Greenhouse Gas Protocol and ISO carbon accounting standards. Learn more about our people: Aditya Manglik: LinkedIn | GitHub | Website Valeria Salis: LinkedIn | GitHub | Website

Sep 24, 2026

Hosts Kate and Tzviya speak with consultant and technologist Pascal Joly about AI sustainability, observability, and tools for making smarter choices about AI usage. The conversation also explores the ITU’s Greening Digital Companies report and what its findings reveal about the growing energy and emissions of the digital sector before discussing the growing energy demands of the IT sector and recent sustainability reporting from major technology companies. Learn more about our people: Kate Goldenring: LinkedIn | Website Tzviya Siegman: LinkedIn | Website Pascal Joly: LinkedIn | Website

Sep 17, 2026

Producer Chris Skipper goes Backstage with Yi Ding and Hongliu Cao, chair and co-chair of the Software Water Intensity project, to discuss the development of the standard. They explore why water is a unique sustainability challenge, how data centres and semiconductor manufacturing contribute to water use, and the complexities of measuring water withdrawal, consumption, and stress. The conversation also looks at the challenges of data availability and how SWI could turn water impact into a practical metric for making better software and infrastructure decisions. Learn more about our people: Chris Adams: LinkedIn | Website Yi Ding: LinkedIn | Website | Scholar Hongliu (Leo) Cao: LinkedIn | Scholar

Aug 6, 2026

TWiGS hosts Kate and Tzviya are joined by Dave Masselink, founder of Compute Gardener, to discuss how software engineers can play a direct role in building a cleaner energy future. The conversation explores flexible computing, carbon aware workload scheduling, and the growing impact of AI on electricity demand, while highlighting practical ways developers can reduce emissions without sacrificing performance. They offer a grounded look at how better, flexible software decisions can support a more sustainable grid. Learn more about our people: Tzviya Siegman: LinkedIn | Website Kate Goldenring: LinkedIn | Website Dave Masselink: LinkedIn | Website

See all episodes →