This Week in Green Software, hosts Kate and Tzviya explore how green software is moving from theory to practice, highlighting new reference implementations for measuring Software Carbon Intensity in AI workloads and progress toward standardizing SCI for Web. They also examine the growing energy demands of AI and data centers, discuss the role of policy and awareness in driving change, and reflect on why practical tools and real-world examples are essential for turning sustainability goals into everyday engineering decisions.

Learn more about our people:

• Kate Goldenring: LinkedIn | Website
• Tzviya Siegman: LinkedIn | Website

Find out more about the GSF:

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

News:

• Introducing GSF Reference Implementations | Green Software Foundation [04:13]
• An update on SCI for Web - a new standard for measuring software carbon intensity for the Web - Green Web Foundation [11:59] 
• Web Sustainability Guidelines (WSG) [13:27]
• Scotland’s ‘green datacentres’ policy ignores emissions impact of AI, analysis shows | The Guardian [20:04]
• More than 100 UK datacentres plan to burn gas to generate electricity | The Guardian [21:11] 
• New Gas-Powered Data Centers Could Emit More Greenhouse Gases Than Entire Nations | WIRED [24:46]
• Google, Meta, Microsoft, Amazon back new data center tech accelerator | Latitude Media [26:41] 

Resources:

• Software Carbon Intensity (SCI) Specification | GSF [03:05]
• EV Ep145: Is Using LLMs for Tech Standards Work Actually Greener? (Harmony) [18:51]
• The Turing Lectures: Making AI (truly) sustainable (Dr. Sasha Luccioni) [22:04] 

Events:

• Web Going Green | June 8 at 12:00 pm BST (Edinburgh, hybrid) [34:26]
• Green IO Amsterdam | June 9-10 (Amsterdam) [34:37]
• Green IO - Meetup Community Event | June 9-10 (Amsterdam) [34:53]
• Who's Going to Save Us From the Energy Use of AI? You Are | June 17 at 6:00 pm BST (Brighton, hybrid) [35:04]
• SustainableIT Impact Summit | June 23 (London) [35:15]
•  Lean Agentic AI | June 23 at 6:00 pm CEST (Karlsruhe, hybrid) [35:21]
• Sustainable Tech in the Age of AI | June 29 at 6:00 pm CEST (Hamburg) [35:29]

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.

Adi and Valeria return to discuss the latest news from The Week in Green Software. They explore whether sustainability can be built directly into the software development process, from identifying “energy smells” in code to using tools that make energy efficiency as visible as performance or security. They also tackle the growing debate around AI’s environmental impact, examining whether today’s resource-intensive investments can be justified by future benefits, and why better measurement of energy, carbon, and water use is essential for making informed decisions about technology’s role in a sustainable future.

Learn more about our people:

• Aditya Manglik: LinkedIn | GitHub | Website
• Valeria Salis: LinkedIn | GitHub | Website

Find out more about the GSF:

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

News:

• A Comprehensive Taxonomy of Software Energy Smells [02:33]
• The Net Climate Impact of Artificial Intelligence [11:10]
• AI Has an Energy Story. Its Water Story Is Still Being Written [22:11]
• The Cost of Faster and Greener Computing [30:32]
• Sustainability Beyond Carbon Newsletter [32:34]

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.

Chris Adams invites Joseph Cook, Arctic scientist and GSF Head of R&D, to explore the latest developments in green software and the growing pressure on the tech industry to balance innovation with sustainability. From AI and energy use to policy, measurement, and infrastructure, the conversation highlights the challenges behind building a greener digital future while sharing practical insights for developers and organizations navigating this rapidly changing space.

Learn more about our people:

• Chris Adams: LinkedIn | GitHub | Website
• Joseph Cook: LinkedIn | Substack

Find out more about the GSF:

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

Resources:

• Software Carbon Intensity (SCI) Specification | GSF [00:44]
• SCI-Web documents and consensus so far | GitHub/W3C [02:08]
• Creating a standard for measuring software carbon intensity for the Web 
• Assemblies | Green Software Foundation [02:22]
• Harmony v2 - Equilibrium Line [06:06]
• AI can help humans find common ground in democratic deliberation | Science [07:03]
• Energy and AI – Analysis - IEA [39:28]
• Why Anthropic’s ultra-dirty deal shouldn’t surprise you at all – Ketan Joshi [46:16]
• How NOT to build a data center | Energy, Extended 
• Harmony v2 - Equilibrium Line Substack [51:50]

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.

Live from Green IO, Tzviya and Kate are joined by Niki Manoledaki and Susannah Hill as they share highlights and key takeaways from the conference, exploring how sustainability is becoming a bigger priority across the tech industry. From practical engineering strategies to broader conversations around AI, infrastructure, and digital responsibility, the episode captures the energy of the event while unpacking what these discussions mean for developers and organizations trying to build greener software.

Learn more about our people:

• Kate Goldenring: LinkedIn | Website
• Tzviya Siegman: LinkedIn | Website
• Niki Manoledaki: LinkedIn | Website
• Susannah Hill: LinkedIn | Website

Find out more about the GSF:

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

Resources:

• Green IO New York Conference May 13th to 14th 2026 [06:09]
• Shaolei Ren: AI consumes a lot of water — but why? | TED Talk [12:41]
• Kepler | CNCF [15:30]

Events:

• State of the fossil-free Internet: Public Briefing | 27 May 4:00pm CET (Virtual) [47:35]
• Green IO Amsterdam - Where IT leaders tackle Sustainability challenges | 9 Jun 6:00pm CEST (Tolhuistuin, Amsterdam) [48:35]
• Environmental Sustainability TCG | CNCF [47:53]

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.

TWiGS hosts Adi and Valeria explore the latest conversations shaping green software, from the environmental impact of AI and data centers to the growing push for better measurement and accountability in tech. They discuss how developers, companies, and policymakers are responding to rising energy demands, while highlighting practical ideas for building more efficient and sustainable digital systems. It’s a thoughtful look at the challenges behind modern computing and the opportunities to rethink how software is designed and operated.

Learn more about our people:

• Aditya Manglik: LinkedIn | GitHub | Website
• Valeria Salis: LinkedIn | GitHub | Website

Find out more about the GSF:

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

News:

• Built to Measure: How SCI, Impact Framework, and Carmen Make Software Measurable | GSF [02:35] 
• AI, energy, and the new rules of cloud sustainability competition | Computer Weekly [16:41] 
• AI model cards in carbon.txt and an AI Sustainability Directory - Green Web Foundation [30:44] 

Events:

• Call for speakers for Green IO Conferences in 2026 [40:19] 

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 Anne Currie chats to Sara Bergman and they unpack the latest developments in green software, exploring how AI growth, infrastructure demands, and policy shifts are reshaping the sustainability conversation. They discuss the real-world impact of energy use, the importance of better measurement and transparency, and the practical steps teams can take to build more efficient systems. It’s a grounded look at the tradeoffs behind modern software and how the industry can move toward more responsible innovation.

Learn more about our people:

• Anne Currie: LinkedIn | GitHub | Website
• Sara Bergman: LinkedIn | GitHub | Website

Find out more about the GSF:

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

News:

• Asynchronous and Unreliable Episode 1 [05:37]
• How to improve AI efficiency beyond cost optimisation | Computer Weekly [09:58]
• Towards Green AI: Decoding the Energy of LLM Inference in Software Development | Arxiv [21:59]
• annecurrie.com [34:02] 
• Greenhouse Gas Protocol changes can bring trust back to climate accounting | Utility Dive [37:44] 
• Green Software Maturity Matrix | GSF [40:22] 
• Where AI Runs Determines Water Stress | ESS Open Archive 

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.

Tzviya Siegman and Kate Goldenring dive into the latest stories shaping green software, from the rising energy demands of AI to the practical tradeoffs developers face when building more efficient systems. They explore new ideas around measuring impact, smarter infrastructure choices, and how industry and policy are starting to respond. The conversation brings together real-world challenges and emerging solutions, showing how sustainability is quickly becoming a core part of modern software development.

Learn more about our people:

• Chris Adams: LinkedIn | GitHub | Website
• Kate Goldenring: LinkedIn | Website
• Tzviya Siegman: LinkedIn | Website

Find out more about the GSF:

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

• 7 Ways to More Frugal AI | BetterTech [02:04]
• Where AI Runs Determines Water Stress | ESS Open Archive [09:54]
• US tech firms successfully lobbied EU to keep datacentre emissions secret | The Guardian [18:14]

• The ML.ENERGY Leaderboard [08:04] 
• TWiGS: Who Pays for AI’s Energy Footprint? - Environment Variables Ep133 [09:15]
• TWiGS: Green AI Tradeoffs - Environment Variables Ep139 [20:43]

• Measuring Software "at Scale" 5 May 6:30 pm CEST (Karlsruhe) [27:53] 
• Call for Speakers | GreenIO [28:13]
• Call for Papers | HotCarbon [28:27]

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.

This Week in Green Software, hosts Carlos and Adi cover the latest developments in green software, including new insights into measuring and reducing the energy impact of digital systems. They explore research challenging common assumptions about efficiency, highlight practical tools for tracking software emissions, and discuss ongoing challenges in standardizing measurement. They also broaden the conversation around digital sustainability, emphasizing that it extends beyond carbon to include social and economic factors.

Learn more about our people:

• Aditya Manglik: LinkedIn | GitHub | Website
• Carlos Pignatoro: LinkedIn | GitHub | Website

Find out more about the GSF:

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

• The SCI Standard: Providing the Software Emissions Data CSRD Needs | GSF [03:35]
• Green Prompting: Characterizing Prompt-driven Energy Costs of LLM Inference | Adamska et al. [13:19]
• GitHub - LLM Energy Lab | Adora Foundation [20:25]
• YouTube - I Can’t Sell You Laptops Anymore [30:43]

• Sustainable AI for Climate Tech Founders (April 22 at 1:00 pm PDT - San Francisco) [37:55]
• Sustainable AI (April 23 at 6:00 pm CEST - Utrecht) [38:10]

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 Kate Goldenring is joined by Chris Adams to explore how the Software Carbon Intensity (SCI) standard can help companies meet new EU sustainability reporting requirements, shifting green software from best practice to audited obligation. They also discuss research on “green prompting,” showing that specific words can significantly impact AI energy use, along with new tools that reveal real-time energy consumption in AI workflows. They close by examining how rising AI demand is increasing hardware costs and disrupting the refurbished laptop market.

Learn more about our people:

• Chris Adams: LinkedIn | GitHub | Website
• Kate Goldenring: LinkedIn | Website

Find out more about the GSF:

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

• The SCI Standard: Providing the Software Emissions Data CSRD Needs | GSF [02:47]
• Green Prompting: Characterizing Prompt-driven Energy Costs of LLM Inference | Adamska et al. [29:40]
• I Can’t Sell You Laptops Anymore [44:30] 

• Green Metrics Tool | green-coding.io [19:25] 
• Cardamon [19:48]
• Briefing 1 - XBRL and materiality briefing video | Chris Adams [21:18] 
• Deck 1 - XBRL and materiality 
• carbon.txt - Green Web Foundation [25:48]
• A validator for carbon.txt files, and linked documents in them · GitHub [26:51]
• Introducing our new work on carbon.txt - Green Web Foundation 
• GitHub - ml-energy/zeus: Measure and optimize the energy consumption of your AI applications! 
• We know AI can use loads of energy. So why isn't it visible at the point of use when you use it? Is it because it's just too hard to show it? | Chris Adams [34:30] 
• How to use GenAI models if you care about the energy they consume | Chris Adams 
• GitHub - Energy and Carbon Tracking for OpenCode 
• Release Guide: CO2.js v0.18 - Green Web Foundation [40:31]
• Putting things in perspective: Data center investments now on par with renewables, oil and gas [49:14]

• Sustainable AI for Climate Tech Founders (April 22, 1:00 pm PDT - San Francisco) [51:32]
• Sustainable AI (April 23, 6:00 pm CEST - Utrecht) [51:41]
• HotCarbon Workshop 

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.

Hosts Adi and Valeria cover new research showing that faster AI models do not always use less energy, especially when multiple models run in parallel. They highlight how the lack of standardized metrics makes it difficult to fairly compare energy efficiency and can lead to inconsistent reporting. They also discuss a curated set of open-source tools for measuring software energy use and why measurement is a critical but challenging first step. Finally, they explore a broader view of digital sustainability beyond carbon and highlight the launch of the Green Software Foundation website as a key resource.

Learn more about our people:

• Aditya Manglik: LinkedIn | GitHub | Website
• Valeria Salis: LinkedIn | GitHub | Website

Find out more about the GSF:

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

• Benchmarking the Energy Savings with Speculative Decoding Strategies | ACL Anthology [02:11]
• A Curated List of Open-source Software‑only Energy Efficiency Measurement Tools: A GitHub Mining Study [12:32]
• What do we mean by Digital Sustainability? | Catherine Mulligan [19:33]
• Green Software Foundation [25:42] 
• Green Software Movement [27:21]

• When Sustainable Product Design Becomes Strategic Advantage | 7 Apr 5:00pm CEST (Virtual) [28:17] 
• GreenOps PowerBI Dashboard | 7 Apr 6:30pm CEST (Karlsruhe, hybrid) [28:32]
• CodeCarbon x Pruna x Ecologits Frugal AI Party | 8 Apr 6:00pm CEST (Paris) [28:51]
• Singapore Conference April 14th to 15th 2026 | 14-15 Apr (Singapore) [29:18]

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.