Environment Variables

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:

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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.

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

News:
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]

Resources:
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]

Events:
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

News:
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]

Events:
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.