Environment Variables

Chris Skipper hosts Florent Morel and Joseph Cook to discuss Carmen on this Backstage episode. Built at Amadeus and now part of the GSF ecosystem, Carmen helps organizations measure software carbon emissions at both infrastructure and application levels using existing observability and FinOps data, all powered by the GSF Impact Framework. They discuss why granular, team-level emissions data matters, how Carmen works in practice, and how standardized, transparent measurements can turn sustainability insights into concrete engineering action.

Learn more about our people:

• Chris Skipper: LinkedIn | Website
• Florent Morel: LinkedIn | GitHub | Website
• Joseph Cook: LinkedIn | Website

Find out more about the GSF:

• The Green Software Foundation Website 
• Sign up to the Green Software Foundation Newsletter

Resources:

• Open‑Source Carbon Measurement Engine: How Carmen Advances Sustainable Engineering | Amadeus  [00:30] 
• How Amadeus engineers are contributing to a carbon-aware software industry? | Amadeus [03:08]
• Impact Framework | GSF [05:30]
• Environment Variables Ep 96 | Backstage: Impact Framework [07:48]
• Software Carbon Intensity (SCI) Specification | GSF [17:13]
• GitHub - AmadeusITGroup/carmen: Open-source carbon measurement for cloud infrastructure and Kubernetes workloads. [20:48]

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!

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Anne Currie hosts Anna Forlati to discuss why sustainability is not a cost center but a business advantage. Drawing on her journey from UX designer to Head of Digital Sustainability and Impact, Anna explores how inclusive design, ESG strategy, and cultural change can make digital products more resilient, ethical, and profitable. From B Corps and EU regulation to GreenOps and AI efficiency, the conversation reframes sustainability as a mindset shift that aligns purpose, performance, and long term value.

Learn more about our people:

• Anne Currie: LinkedIn | Website
• Anna Forlati: LinkedIn | Website

Find out more about the GSF:

• The Green Software Foundation Website 
• Sign up to the Green Software Foundation Newsletter

Resources:

• Why inclusive products are green products - TetraLogical [11:57] 
• Green AI: Hype or Hope? | Harvard Magazine 
• GenAI Ecosystems Are Software, Not Magic: What It Takes to Build Something You Can Live With | by Wilco Burggraaf | Medium  

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.

In this episode, host Chris Adams is joined by Wilco Burggraaf and Robert Keus of GreenPT to unpack what greener prompting and transparent AI actually look like in practice. They discuss why most AI services hide their environmental impact, how GreenPT exposes real energy and carbon data to users, and why user behavior plays a major role in AI’s footprint. The conversation explores prompt length, session design, model efficiency, and the limits of chat-based AI, making a strong case for transparency, better defaults, and more purposeful use of AI if it’s going to scale responsibly.

Learn more about our people:

• Chris Adams: LinkedIn | GitHub | Website
• Robert Keus: LinkedIn | Website
• Wilco Burggraaf: LinkedIn | Medium | Website

Find out more about the GSF:

• The Green Software Foundation Website 
• Sign up to the Green Software Foundation Newsletter

Resources:

• GreenPT [01:14] 
• Green Software - The Netherlands | Meetup [02:34]
• Scaleway [22:40]
• Neuralwatt [29:23]

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!

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Chris Adams speaks with Tom Kerkhove of the Microsoft Azure API Management team about how thoughtful API design can reduce energy use and improve system efficiency. They discuss how API gateways, caching, throttling, and observability can cut unnecessary compute and data transfer, while also improving reliability and developer experience. The conversation shows how small architectural decisions at the API layer can have an outsized impact on cost, performance, and sustainability at scale.

Learn more about our people:

• Chris Adams: LinkedIn | GitHub | Website
• Tom Kerkhove: LinkedIn | Website

Find out more about the GSF:

• The Green Software Foundation Website 
• Sign up to the Green Software Foundation Newsletter

Resources:

• Solar Protocol [02:33]
• KEDA [04:37] 
• Azure API Management [10:01]
• Grid-aware websites - Green Web Foundation [20:37]
• Electricity Maps [23:25]
• Real Time Energy and Carbon Standard for Cloud Providers [26:17]
• Azure API Management | Microsoft Azure Blog [30:01]

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.

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 

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!
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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:

• 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.

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!

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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.

Guest host Anne Currie is joined by software engineer and sustainability advocate Julian Gommlich to explore how green practices can be embedded throughout the DevOps lifecycle. They discuss how modern operational practices like continuous delivery, automation, and agile iteration naturally align with sustainability goals, helping teams build more efficient, resilient, and energy-aware systems. The conversation covers real-world examples, from migrating to newer, more efficient software versions to understanding the carbon impact of data centers, and highlights why adopting a DevOps mindset is crucial for driving both environmental and business value in today’s rapidly changing digital landscape.

Learn more about our people:

• Anne Currie: LinkedIn | Website
• Julian Gommlich: LinkedIn | Website

Find out more about the GSF:

• The Green Software Foundation Website 
• Sign up to the Green Software Foundation Newsletter

Resources:

• Power in Numbers: Mapping the electricity grid of the future w/ Olivier Corradi [31:02] 
• Electricity Maps [31:58]
• Google’s huge new Essex datacentre to emit 570,000 tonnes of CO2 a year [41:06] 
• Compute Gardener Scheduler
• Scalable Platform for Reporting Usage and Cloud Emissions 

Events:

• BetterSoftware – October 3 · Turin, Italy
• Sustainable AI: Energy, Water, and the Future of Growth – October 6 · San Francisco, USA 
• Sustainable Coding: Rust Meets the Right to Repair – October 16 · ’s-Hertogenbosch, Netherlands

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