Best of LinkedIn: Sustainability & Green ICT CW 20/ 21

The past two weeks showed a clear shift from broad sustainability messaging toward operational Green ICT execution. AI energy, water, cooling, cloud optimization, and software efficiency dominated the agenda, while new partnerships and infrastructure models signaled that sustainability is becoming a design requirement, not a reporting add-on.

Date

May 29, 2026

Sustainability & Green ICT

Methodology: Every two weeks we collect most relevant posts on LinkedIn for selected topics and create an overall summary only based on these posts. If you´re interested in the single posts behind, you can find them here: https://linktr.ee/thomasallgeyer. Have a great read!

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Listen to our podcast

If you prefer listening, check out our podcast summarizing the most relevant insights from Sustainability & Green ICT CW 20/ 21:

AI Energy, Water and Infrastructure Transparency

Discussion moved from per-query metrics to supplier-level transparency on energy, emissions, and water use, with calls for comparable disclosure
Voices highlighted stress on power and water systems from fast-growing data centers, urging local planning that recognizes physical resource limits
Scaling AI in regions such as Southeast Asia was framed as a trade-off between optimization benefits and higher emissions from dense infrastructure clusters
Hardware, GPUs, and image generation were described as concrete drivers of electricity demand, reinforcing the need for sustainable GPU clouds by design

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Efficient AI, Smaller Models and Green Software Engineering

Green AI shifted toward practical architecture choices, including smaller models, model routing, caching, deduplication, prompt optimization, and token reduction
UNESCO’s resource-efficient generative AI work reinforced quantization, smaller models, and prompt optimization as tangible levers for lower energy use
In-device AI and frugal AI were positioned as alternatives to continuous cloud inference, reducing data center dependency while improving privacy and latency
Green coding gained relevance as efficient software was linked directly to lower energy use, lower cost, and stronger customer differentiation

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Sustainable Data Centers, Cooling and Power Strategy

Data centers emerged as the central pressure point for Green ICT, with power access becoming a strategic location and competitiveness factor
Water use became a visible risk area, with cooling design, reporting transparency, and local resource constraints repeatedly challenged
Finland and the Nordics were highlighted as attractive green data center regions due to renewable power, grid planning, and heat reuse potential
Waste heat recovery, liquid cooling, immersion cooling, modular design, renewables, and storage were framed as core design choices for sustainable AI infrastructure

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Partnerships, Platforms and New Infrastructure Models

Infosys and Sopht partnered to embed Green IT measurement and cloud optimization, positioning sustainability as a measurable enterprise IT discipline
Amazon, Google, Meta, and Microsoft backed startup funding for data center energy storage, cooling, and low-carbon materials
T.Loop entered Finland with a circular data energy center model designed to feed waste heat into district heating systems
TRON Data Center in Spain combined solar, batteries, eco LNG, and hydrogen as a sustainable AI infrastructure concept
BIG SUN advanced a Green AI infrastructure platform combining renewables, storage, cooling, and waste heat recovery
Sirius GreenTech promoted autonomous solar-powered computing while pursuing enterprise-grade security and compliance standards

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Cloud Optimization, GreenOps and CIO Accountability

Cloud migration was increasingly assessed through both carbon and cost, with SAP-to-Azure examples highlighting right-sizing and region selection
FinOps and GreenOps were positioned as linked disciplines for controlling AI and cloud cost, waste, energy use, and emissions
DORA metrics were challenged to expand beyond speed and stability toward sustainability, energy use, and digital waste
Sustainable IT was framed as a CIO responsibility, requiring governance, measurement, procurement choices, and operational discipline

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Clean Tech, Industrial Decarbonization and Climate Capital

Clean tech momentum focused on commercialization, grid modernization, storage, firm power, and first-of-a-kind deployment
India was positioned as a rising cleantech hub through solar growth, investment inflows, and domestic manufacturing
France’s clean tech agenda highlighted green hydrogen, green steel, and batteries as strategic industrial sovereignty themes
Ecocem’s Dunkirk facility showed how low-carbon cement can support industrial decarbonization at scale
Climate capital appeared to concentrate around firm power, storage, AI-energy infrastructure, and scalable technologies beyond pilot stage

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Reporting, Regulation and Credibility in Green ICT

The EU AI Act was linked to Green AI reporting, governance, FinOps tracking, and high-risk system oversight
AI sustainability claims were challenged where benefits were asserted without clear conditions, data, transparency, and accountability
Anthropic’s Claude deployment on gas-powered Colossus campuses raised concerns about the carbon intensity of AI infrastructure
Digital Realty’s reporting was highlighted as a benchmark for water-use transparency, particularly at regional level

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