Sustainable Infrastructure: Building Resilient, Low-Carbon Projects

RWE sustainably powers Global Switch’s London DC

RWE, a German renewable energy company, has signed an eight-year power purchase agreement (PPA) with Global Switch, an owner, operator, and developer of data centres in Europe and Asia-Pacific. Under the terms of the agreement, Global Switch will source electricity produced from RWE’s Brechfa Forest West onshore wind farm to power its data centre in the heart of London’s Docklands. From January 2026 until 2033, RWE will supply a total of 70 gigawatt hours of clean electricity per year. The Brechfa Forest West onshore wind farm is located in southwest Wales and was commissioned in 2018. It comprises 28 turbines and has a generation capacity of 57.4 megawatts. Ulf Kerstin, Chief Commercial Officer at RWE Supply & Trading, notes, “In view of the ongoing digitalisation and the increasing use of artificial intelligence in almost all areas of life, the number of data centres and their energy requirements are growing. "Some data centre operators are already relying on the use of low-carbon electricity from RWE, and we are delighted to have gained Global Switch as another partner.” Peter Domeney, COO at Global Switch, comments, “Our agreement with RWE is a critical next step on our journey to purchasing 100% renewable energy by 2030 and to the setting of new standards for what a sustainable, environmentally-conscious data centre can look like. "It’s an agreement that brings together the forests of Wales and the most powerful, most advanced AI and high-performance compute deployments in the world.” Wind power from Wales to London Global Switch’s London data centre, set to benefit from this agreement, is located in the heart of the city’s business district, with access to 224 Mega Volt Ampere (MVA) - or approximately 224 MW - of secured power and currently undergoing a programme of densification and expansion. Last year, it was selected by CoreWeave to host one of Europe’s largest deployments of NVIDIA H100 and H200 GPUs, as well as being the site of the company’s liquid cooling showcase - a presentation of the latest liquid cooling technologies, some of which had never before been deployed in Europe. Global Switch is targeting 100% renewable energy by 2030, and annualised power usage efficiency (PUE) of 1.2 across its European sites. In 2025, its emissions reduction targets were approved by the Science Based Targets initiative and its sites were inducted into the voluntary European Code of Conduct for Energy Efficiency in Data Centres initiative. RWE says it is investing billions of euros in expanding its generation portfolio, particularly in offshore and onshore wind, solar energy, and battery storage. This is complemented by its global energy trading business. The company says that, thanks to its "integrated portfolio of renewables, battery storage, and flexible generation, [it] is well positioned to meet the growing global demand for electricity," which is being driven by the increasing use of artificial intelligence and further electrification.

Huber+Suhner expands sustainable packaging drive

Huber+Suhner, a Swiss fibre optic cable manufacturer, has broadened the use of recycled and recyclable packaging across its fibre optic portfolio as part of its ongoing sustainability programme. The company has removed more than 743,000 single-use plastic bags, substituted approximately 1.5 million cable ties, and replaced 35,500 blister packages with recycled polyethylene terephthalate. 11 product families are now covered by the initiative. Lana Ollier, Head of Global Sustainability at Huber+Suhner, says, “Removing single-use plastic items and moving more product families to recyclable and sustainable materials show what’s possible when sustainability is designed in, not added on.” Less waste and lower packaging emissions The measures include FSC-certified, recyclable paper packaging for connector and cable assemblies, and recycled PET for fibre modules including LISA, SYLFA HD, and IANOS. Huber+Suhner reports improvements in handling, dust protection, and transport weight. Verified lifecycle assessments indicate that blister packaging emissions have been reduced by around 50% for selected modules when compared with traditional plastics. The changes are intended to cut on-site material waste and ease installation through simplified paper formats and stackable blister trays. Following positive feedback, the company says its sustainable packaging approach will extend to 17 fibre optic product families during 2026. For more from Huber+Suhner, click here.

The blueprint for tomorrow’s sustainable data centres

In this exclusive article for DCNN, Francesco Fontana, Enterprise Marketing and Alliances Director at Aruba, explores how operators can embed sustainability, flexibility, and high-density engineering into data centre design to meet the accelerating demands of AI: Sustainable design is now central to AI-scale data centres The explosive growth of AI is straining data centre capacity, prompting operators to both upgrade existing sites and plan large-scale new-builds. Europe’s AI market, projected to grow at a 36.4% CAGR through 2033, is driving this wave of investment as operators scramble to match demand. Operators face mounting pressure to address the environmental costs of rapid growth, as expansion alone cannot meet the challenge. The path forward lies in designing facilities that are sustainable by default, while balancing resilience, efficiency, and adaptability to ensure data centres can support the accelerating demands of AI. The cost of progress Customer expectations for data centres have shifted dramatically in recent years. The rapid uptake of AI and cloud technologies is fuelling demand for colocation environments that are scalable, flexible, and capable of supporting constantly evolving workloads and managing surging volumes of data. But this evolution comes at a cost. AI and other compute-intensive applications demand vast amounts of processing power, which in turn place new strains on both energy and water resources. Global data centre electricity usage is projected to reach 1,050 terawatt-hours (TWh) by 2026, placing data centres among the world’s top five national consumers. This rising consumption has put data centres firmly under the spotlight. Regulators, customers, and the wider public are scrutinising how facilities are designed and operated, making it clear that sustainability can no longer be treated as optional. To survive amongst these new expectations, operators must balance performance with environmental responsibility, rethinking infrastructure from the ground up. Steps to a next-generation sustainable data centre 1. Embed sustainability from day one Facilities designed 'green by default' are better placed to meet both operational and environmental goals, and this why sustainability can’t be an afterthought. This requires renewable energy integration from the outset through on-site solar, hydroelectric systems, or long-term clean power purchase agreements. Operators across Europe are also committing to industry frameworks like the Climate Neutral Data Centre Pact and the European Green Digital Coalition, ensuring progress is independently verified. Embedding sustainability into the design and operation of data centres not only reduces carbon intensity but also creates long-term efficiency gains that help manage AI’s heavy energy demands. 2. Build for flexibility and scale Modern businesses need infrastructures that can grow with them. For operators, this means creating resilient IT environments with space and power capacity to support future demand. Offering adaptable options - such as private cages and cross-connects - gives customers the freedom to scale resources up or down, as well as tailor facilities to their unique needs. This flexibility underpins cloud expansion, digital transformation initiatives, and the integration of new applications - all while helping customers remain agile in a competitive market. 3. Engineering for the AI Workload AI and high-performance computing (HPC) workloads demand far more power and cooling capacity than traditional IT environments, and conventional designs are struggling to keep up. Facilities must be engineered specifically for high-density deployments. Advanced cooling technologies, such as liquid cooling, allow operators to safely and sustainably support power densities far above 20 kW per rack, essential for next-generation GPUs and other AI-driven infrastructure. Rethinking power distribution, airflow management, and rack layout ensures high-density computing can be delivered efficiently without compromising stability or sustainability. 4. Location matters Where a data centre is built plays a major role in its sustainability profile, as regional providers often offer greater flexibility and more personalised services to meet customer needs. Italy, for example, has become a key destination for new facilities. Its cloud computing market is estimated at €10.8 billion (£9.4 billion) in 2025 and is forecast to more than double to €27.4 billion (£23.9 billion) by 2030, growing at a CAGR of 20.6%. Significant investments from hyperscalers in recent years are accelerating growth, making the region a hotspot for operators looking to expand in Europe. 5. Stay compliant with regulations and certifications Strong regulatory and environmental compliance is fundamental. Frameworks such as the General Data Protection Regulation (GDPR) safeguard data, while certifications like LEED (Leadership in Energy and Environmental Design) demonstrate energy efficiency and environmental accountability. Adhering to these standards ensures legal compliance, but it also improves operational transparency and strengthens credibility with customers. Sustainability and performance as partners The data centres of tomorrow must scale sustainably to meet the demands of AI, cloud, and digital transformation. This requires embedding efficiency and adaptability into every stage of design and operation. Investment in renewable energy, such as hydro and solar, will be crucial to reducing emissions. Equally, innovations like liquid cooling will help manage the thermal loads of compute-heavy AI environments. Emerging technologies - including agentic AI systems that autonomously optimise energy use and breakthroughs in quantum computing - promise to take efficiency even further. In short, sustainability and performance are no longer competing objectives; together, they form the foundation of a resilient digital future where AI can thrive without compromising the planet. For more from Aruba, click here.

Datacenter United gains SBTi emissions validation

Datacenter United, an independent Belgian data centre operator, has confirmed that its near-term emissions reduction targets have been validated by the Science Based Targets initiative (SBTi), a global partnership that helps companies set emissions reduction targets aligned with climate science. The approval aligns the company’s targets with the 1.5°C pathway, the most stringent scenario within the SBTi framework. The company says its investment programme will continue to prioritise energy efficiency, cooling approaches suited to higher density environments, responsible water use, and infrastructure designed to support AI workloads. Friso Haringsma, CEO of Datacenter United, says, “The SBTi validation confirms that our sustainability strategy is not only ambitious, but also substantively sound. "We are convinced that digital progress and sustainable growth can reinforce each other. This recognition motivates us to continue on this path consistently.” Sustainability commitments and investment programme The SBTi validation forms part of a wider sustainability framework in place at Datacenter United. The company holds ISO 14001 certification and is a signatory to the Climate Neutral Data Centre Pact. It also works with external organisations including EcoVadis, Greenly, and The Green Grid. Datacenter United has linked the validation to its ongoing €120 million (£105 million) investment programme, which is focused on efficiency improvements, reduced energy consumption, water management, and infrastructure designed for future demand. The company says the milestone supports its longer-term approach to operating data centres in Belgium with an emphasis on reliability, scalability, and environmental performance. For more from Datacenter United, click here.

Nostrum details availability of new data centres in Spain

Nostrum Data Centers, a developer of sustainable data centre infrastructure across Spain and Europe, has confirmed that its data centre assets in Spain are scheduled to become available in 2027, as the company develops new capacity to support AI, cloud, and high-performance computing workloads. The company, part of Nostrum Group, is planning up to 500 MW of IT capacity across multiple sites in Spain. According to Nostrum, around 300 MW of power capacity has already been secured, with further phases intended to increase this figure over time. Earlier this month, Nostrum announced that AECOM had been appointed to design and manage a large data centre campus in Badajoz. The project represents one of several developments underway, with the Badajoz site forming part of a wider national rollout. Capacity rollout and site strategy Nostrum is developing six data centre sites across Spain, selected to take advantage of subsea connectivity routes, available power infrastructure, and energy costs. The company says this approach is intended to support phased deployment and future expansion as demand grows. The facilities are designed to support higher density computing, with Nostrum stating a target PUE of 1.1 and zero water usage for cooling. The company adds that its developments are intended to reduce carbon emissions associated with data centre operations and align with broader sustainability objectives. Gabriel Nebreda, Chief Executive Officer at Nostrum Group, comments, “Our Spain-based data centres combine strategic site selection, secured power connections, and AI-ready infrastructure to meet the demands of the next-generation digital economy. "Our team of industry leaders with over 25 years of experience are developing facilities that are not only highly efficient and scalable but also fully sustainable, supporting both our customers’ growth and global climate goals.” Nostrum says the 2027 availability date reflects its broader development programme, which is focused on delivering new data centre capacity with secured land and power across Spain. For more from Nostrum Data Centers, click here.

atNorth's ICE03 wins award for environmental design

atNorth, an Icelandic operator of sustainable Nordic data centres, has received the Environmental Impact Award at the Data Center Dynamics Awards for its expansion of the ICE03 data centre in Akureyri, Iceland. The category recognises projects that demonstrate clear reductions in the environmental impact of data centre operations. The expansion was noted for its design approach, which combines environmental considerations with social and economic benefits. ICE03 operates in a naturally cool climate and uses renewable energy to support direct liquid cooling. The site was constructed with sustainable materials, including Glulam and Icelandic rockwool, and was planned with regard for the surrounding landscape. Heat-reuse partnership and local benefits atNorth says all its new sites are built to accommodate heat reuse equipment. For ICE03, the company partnered with the local municipality to distribute waste heat to community projects, including a greenhouse where school children learn about ecological cultivation and sustainable food production. The initiative reduces the data centre’s carbon footprint, supports locally grown produce, and contributes to a regional circular economy. ICE03 operates with a PUE below 1.2, compared with a global average of 1.56. During the first phase of ICE03’s development, more than 90% of the workforce was recruited locally, and the company says it intends to continue hiring within the area as far as possible. atNorth also states it supports educational and community initiatives through volunteer activity and financial contributions. Examples include donating mechatronics equipment to the Vocational College of Akureyri and supporting local sports, events, and search and rescue services. The ICE03 site has also enabled a new point of presence (PoP) in the region, established by telecommunications company Farice. The PoP provides direct routing to mainland Europe via submarine cables, improving network resilience for northern Iceland. Ásthildur Sturludóttir, the Mayor of Akureyri, estimates that atNorth’s total investment in the town will reach around €109 million (£95.7 million), with long-term investment expected to rise to approximately €200 million (£175.6 million). This, combined with the wider economic and social contribution of the site, is positioned as a model for future data centre development. Eyjólfur Magnús Kristinsson, CEO of atNorth, comments, “We are delighted that our ICE03 data centre has been recognised for its positive impact on its local environment. "There is a critical need for a transformation in the approach to digital infrastructure development to ensure the scalability and longevity of the industry. Data centre operators must take a holistic approach to become long-term, valued partners of thriving communities.” For more from atNorth, click here.

atNorth's DEN01 to supply district heating in Copenhagen

atNorth, an Icelandic operator of sustainable Nordic data centres, has agreed a partnership with Vestforbrænding, Denmark’s largest waste-to-energy company, to supply excess heat from its forthcoming DEN01 data centre campus into the district heating network serving Greater Copenhagen. DEN01, a 22.5MW site in Ballerup, is scheduled to open in early 2026. Through the collaboration, warm water generated as a by-product of direct liquid cooling will be transferred into Vestforbrænding’s network from 2028. The recovered heat is expected to support the heating of more than 8,000 homes, reducing energy consumption for local central heating and lowering emissions for both organisations. Denmark has pursued decarbonisation for several years and has set a national target to become net zero by 2045, with a 110% emissions reduction target by 2050. Coal is being phased out of the district heating sector, and heat-reuse projects form part of the country’s circular economy strategy. atNorth highlights that the initiative aligns with its wider approach to sustainable construction, energy efficiency, and community-focused development. Vestforbrænding is expanding its network as part of its 2030 District Heating Plan, replacing oil and gas boilers across thousands of households and integrating new heat sources such as surplus heat from data centres. Heat-reuse initiatives across the Nordics Steen Neuchs Vedel, CEO of Vestforbrænding, says, “For many years, we have talked about surplus heat from data centres being part of the future. Now, the future is here. “With today’s contract signing, we are showing the way forward for how surplus heat from data centres can reach people’s homes. There has also been talk about sector coupling in the district heating sector: today, we demonstrate how this can happen in practice, to the benefit of consumers.” Eyjólfur Magnús Kristinsson, CEO at atNorth, adds, “As the demand for AI-ready digital infrastructure continues to increase, it is imperative that data centre companies scale in a responsible way. “By actively seeking heat-reuse partnerships for our data centres, we can mitigate our environmental impact, benefit the communities in which we operate, and help clients decarbonise their IT workloads.” The announcement follows atNorth’s partnership with Wa3rm, which plans to use waste heat from the company’s DEN02 site to support local vegetable production. atNorth has also agreed a heat-reuse initiative with Kesko Corporation to supply recovered heat from its FIN02 site to a neighbouring store. For more from atNorth, click here.

Verne, Nscale planning 15MW AI deployment in the Nordics

Verne, a provider of low-carbon high-performance data centres across the Nordics, has agreed a 15MW AI infrastructure deployment with hyperscaler Nscale, expanding high-density, renewable-powered computing capacity across its Icelandic campus. The project centres on liquid-cooled GPU infrastructure and is set to run throughout 2026. The installation will comprise around 4,600 NVIDIA Blackwell Ultra GPUs, with an 85% liquid-cooled and 15% air-cooled configuration designed to maximise efficiency within Verne’s existing facilities. It is one of the region’s largest liquid-cooled GPU projects and is expected to support lower energy use and reduced environmental impact. Iceland’s renewable electricity and natural free-cooling conditions position it as a suitable location for high-density AI workloads. Nscale selected Verne based on its experience in renewable-powered data centres and its ability to support large-scale training and inference environments. Large-scale renewable AI capacity across the region “The pace of change in AI infrastructure is extraordinary," notes Dominic Ward, CEO of Verne. "As the demand for GPU capacity accelerates, availability of clean, renewable power has become as important as raw performance. "Partnering with Nscale, whose expertise is redefining how AI infrastructure is delivered responsibly at scale, demonstrates how the Nordics are fast becoming a strategic hub for sustainable AI growth.” Philippe Sachs, Chief Business Officer and President of EMEA at Nscale, adds, “As compute demand grows, we’ve worked with partners throughout the world and the Nordic region to deliver sustainable solutions to meet that demand. "The Nordics offer a uniquely sustainable foundation: abundant renewable energy and natural cooling. With our existing operations in Norway, we’ve seen first-hand how the region powers low-carbon, sovereign-grade AI infrastructure." David Hogan, Vice President Enterprise at NVIDIA, comments, “The collaboration between Verne and Nscale showcases how NVIDIA technology can enable high-performance AI factories with a focus on energy efficiency and sustainability. "Deployments like this reflect how organisations are scaling the next generation of AI workloads responsibly, using innovative cooling and renewable-powered data centres.” The agreement aligns with Verne’s wider European expansion, which includes new campuses planned in Finland and early-stage development activity in France. The companies state that these projects contribute to the Nordics’ growing role as a centre for renewable-powered AI infrastructure. For more from Verne, click here.

Sabey achieves 25% carbon emissions cut

Sabey Data Centers, a data centre developer, owner, and operator, has announced a 25.2% reduction in Scope 1 and Scope 2 carbon emissions from a 2018 baseline, even as electrical load under management has continued growth in the same interval. The company’s 2024 Sustainability Report details progress in environmental performance, technology innovation, and clean energy partnerships intended to rival the global data centre sector. 2024 report highlights The 2024 report shares data on Sabey’s emissions reductions, energy efficiency improvements, and external partnerships. The company says it continues to align its emissions reductions with its science-based targets and is working to achieve net-zero carbon emissions across Scope 1 and Scope 2 by 2029. Key developments from the report include: · Carbon emissions slashed 25.2% from 2018 baseline· Pioneering MOU with TerraPower to explore integrating next-generation nuclear energy· Nine buildings earn ENERGY STAR certification with scores over 90; five receive a score of 99/100 Clear path to net zero The report outlines the steps Sabey is taking to meet its net-zero goal. These include continued investment in carbon-free energy, improving building operations to reduce energy use, reducing emissions from HVAC and fuel sources, and helping customers better understand their own energy footprints. Casey Mason, Senior Energy & Sustainability Manager, says, “Data centres are the backbone of the digital economy and [the] AI revolution, but must become stewards of global decarbonisation. “We are not just on track for net zero by 2029; we're reimagining how critical digital infrastructure can be both scalable and sustainable for the world’s fastest-growing industries. "Our work with TerraPower, local utilities, and SBTi showcases the kind of bold collaboration needed for a climate-secure future.” In alignment with the Greenhouse Gas Protocol, Sabey reports on emissions and sustainability efforts annually, engaging with external organisations in the process, including CDP, GRESB, EcoVadis, Atrius, and data centre tenants. The company’s emissions reporting includes both location-based and market-based accounting methods. For more from Sabey, click here.

nLighten reports first ICFEn scores for UK, Germany, Spain

nLighten, a European data centre operator, has announced the first Integrated Carbon-Free Energy (ICFEn) scores for its data centres in the United Kingdom, Germany, and Spain, something the company considers a significant step in how environmental performance is measured within the sector. Developed in collaboration with the Fondazione Eni Enrico Mattei (FEEM), nLighten says the ICFEn framework introduces a more comprehensive approach to sustainability reporting by assessing hourly carbon-free energy matching, heat recovery, and contributions to grid stability. Unlike traditional metrics that rely on annual averages or focus solely on energy consumption, the company notes that ICFEn provides real-time insights into how facilities contribute to decarbonisation through energy reuse and system integration. A new framework for transparent environmental reporting The ICFEn model builds upon the 24/7 Carbon-Free Energy concept by including three key elements: hourly renewable electricity matching, heat recovery, and grid stabilisation. This combined methodology aligns with the EU Energy Efficiency Directive, as well as sustainability standards such as the Greenhouse Gas (GHG) Protocol and the Science Based Targets initiative. Chad McCarthy, Chief Technology Officer at nLighten, comments, “Traditional sustainability metrics have focused on the data centre’s electrical energy profile, but ICFEn integrates the data centre into a community energy system, accounting for both consumption and contribution. "By including heat recovery and real-time renewable energy matching, we’re offering customers and stakeholders unprecedented transparency about our environmental impact, hour by hour, not just as year-end averages.” nLighten’s facilities in the UK, Germany, and Spain achieved good ICFEn scores through renewable power purchase agreements and heat recovery initiatives. Its UK data centres recorded an ICFEn score of 94.61%, higher than the regional carbon-free energy grid average of 56.47%. The company achieves hourly renewable energy matching by integrating renewable assets into its portfolio and aligning their production with operational demand in real time. This aims to ensure that data centres are powered by clean energy when it is actively being consumed. Francesco Marasco, Vice President of Energy Operations and Sustainability at nLighten, adds, “We’re not just measuring renewable energy consumption, but quantifying environmental improvement through sustainable projects, for which we share the calculation method transparently. "The ICFEn methodology allows us to demonstrate measurable, system-wide benefits that lower community emissions. We encourage other operators to adopt this framework, as raising awareness of data centres’ environmental contributions benefits the wider sector.” Encouraging wider adoption nLighten has made the ICFEn methodology publicly available under a Creative Commons licence to encourage industry-wide adoption. The framework’s release coincides with updates to the GHG Protocol, which are expected to introduce hourly-based renewable energy reporting requirements. The company plans to extend ICFEn reporting to all European sites and introduce third-party verification of hourly energy and heat recovery data as part of its next phase of implementation. For more from nLighten, click here.