Environment Variables

Anne Currie is joined by Sara Bergman to explore what the shift to greener computing really looks like in practice, using .NET and modern CPU architectures as a concrete example. They unpack why moving from traditional x64 systems to more efficient ARM-based platforms can cut costs and carbon, how runtime environments like .NET make architectural transitions easier, and why staying up to date with platforms is essential for performance, security, and sustainability. Along the way, the conversation connects DevOps, modernization, and energy efficiency into a clear message: the green shift starts with building systems that are designed to change.

Learn more about our people:
Anne Currie: LinkedIn | Website
Sara Bergman: LinkedIn | Website

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

Resources:
Building Green Software [Book] [03:17]
Environment Variables Ep 115 - Real Efficiency at Scale with Sean Varley [09:06]
Environment Variables Ep 107 - Cloud Infrastructure, Efficiency and Sustainability [09:47]
RISC vs CISC - GeeksforGeeks
Microsoft .NET

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This Week in Green Software, Chris Adams and Asim Hussain round up the latest stories shaping sustainable tech. From new research on AI and energy use to policy shifts, tooling updates, and signals from the wider climate and software communities, the discussion connects the dots on what matters right now and why. It’s a fast-moving snapshot of the trends, tensions, and progress driving green software forward.

Learn more about our people:
Chris Adams: LinkedIn | GitHub | Website
Asim Hussain: LinkedIn

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

News:
AI Energy Score v2: Refreshed Leaderboard, now with Reasoning | Hugging Face [05:57]
Digital Transformation, IT Cost Optimization & Sustainable IT Solutions | Antarctica [15:43]
Scott’s Chamberlin of NeuralWatt’s survey link on charging for AI inference by the KWh, instead of by the token, to align incentives [29:16]
Simplified European Sustainability Reporting Standards | ESG [31:10]
Climate rift opens between Amazon and rivals in row over data centre power | Financial Times [40:46]

Resources:
SCI for AI spec referencing token use | GSF [14:35]
Are these all the tokens we should be counting? Ismael Velasco’s talk at Green IO [25:57]
GitHub: System Prompts for Grok chat assistant [28:36]
Elon Musk's AI chatbot, Grok, started calling itself 'MechaHitler' | NPR [28:53]
Wow tech firms STILL need to report their revenue from the oil and gas sector, even after reporting standards have been ‘simplified’? | Chris Adams [31:19]
An E.E.D. update: Who is disclosing and who isn't ? - Green Web Foundation [34:43]
The secretive cabal of US polluters that is rewriting the EU’s human rights and climate law - SOMO [37:27]
[Draft] ESRS E1 - Climate Change

If you enjoyed this episode then please either:

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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:

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Watch our videos on The Green Software Foundation YouTube Channel!
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Hosted on Acast. See acast.com/privacy for more information.

When artificial intelligence grows, so does its thirst. Chris Skipper hosts sustainability expert Valeria Salis, digging into the hidden cost of powering AI: the massive volumes of water needed to cool the data centers. From submerged servers off China’s coast to European communities pushing back on tech infrastructure, they discuss the environmental trade-offs and the push for solutions that keep innovation flowing without draining local resources.

Learn more about our people:
Chris Skipper: LinkedIn | Website
Valeria Salis: LinkedIn | YouTube | Website

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

News:
China's HiCloud launches wind-powered underwater data center [07:21]
Microsoft finds underwater datacenters are reliable and sustainable [24:26]
Thirsty AI mega projects raise alarm in Europe’s driest regions [25:49]
How datacenters are innovating with sustainability in mind [36:08]

Resources:
Green Software Italia 🌱 [03:18]
Green Software Italia | LinkedIn
Cloud Native Computing Foundation (CNCF) [11:06]
Environment Variables Ep 59 | TWiGS: CNCF TAG Environmental Sustainability [11:25]
Environment Variables Ep 14 | Community Clouds and Energy Islands with Dawn Nafus and Laura Watts [17:56]
Green Software Movement [35:25]
SCI for AI [41:16]
Projects | GSF [41:46]
Hosted on Acast. See acast.com/privacy for more information.

Guest host Anne Currie speaks with Karthik Vaidhyanathan, Assistant Professor at IIIT Hyderabad, about integrating sustainability into AI development. They discuss how the world can balance digital growth with renewable energy goals and how AI systems can be designed to be energy-efficient rather than energy-intensive. Karthik shares insights from his research on sustainable AI and MLOps, including dynamically selecting and retraining models to cut energy use and costs without compromising performance. The conversation underscores the importance of dynamic system design and collaboration across academia, industry, and government to make sustainability a core principle in software engineering.

Learn more about our people:
Anne Currie: LinkedIn | Website
Karthik Vaidhyanathan: LinkedIn | GitHub | Website

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

Resources:
Attention Is All You Need [06:34]
Environment Variables Ep119 Backstage: The Green Software Movement Platform [13:16]
SustAInd [33:01]
HarmonE [36:00]
SA4S @ SERC [36:33]

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.