As the digital age surges forward, the demand for data storage and computing power escalates exponentially. At the heart of this revolution lie data centres, sprawling complexes packed with servers that power everything from our social media interactions to critical artificial intelligence applications. Yet, behind the sleek screens and instantaneous connectivity lurks a massive, and often overlooked, environmental cost. Energy-hungry and carbon-intensive, data centres have become a focal point in the global fight against climate change. A groundbreaking study in npj Urban Sustainability delves deep into this challenge, offering pioneering insights into decarbonising digital infrastructure while aligning with broader goals of urban sustainability.
The urgency of sustainable data centre development stems from their outsized carbon footprint. Estimates suggest that data centres account for roughly 1% of global electricity use, a proportion poised to rise sharply as 5G, IoT, and edge computing proliferate. Traditional data centres rely heavily on fossil fuel-based energy grids to maintain round-the-clock operation and ensure the ultra-low latency users demand. This dependency not only inflates operational costs but also ties digital progress intrinsically to emissions, threatening urban environmental targets.
Researchers led by Liu, F.H.M., Lai, K.P.Y., and Seah, B. examine this intersection of technology, urban infrastructure, and ecology with remarkable sophistication. Their study explores how data centres can pivot toward greener operational models, decreasing carbon intensity without sacrificing performance. Embedded within a broader vision of urban sustainability, the research advocates for integrating data centre planning and energy policy, reframing these digital behemoths as catalysts for eco-innovation rather than climate liabilities.
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Central to their argument is a comprehensive analysis of the energy consumption profile of data centres in urban areas. The study maps not only direct electricity use but also indirect emissions, such as those from cooling systems traditionally reliant on hydrofluorocarbon refrigerants, which have a high global warming potential. By conducting this granular examination, the authors highlight key leverage points where technological and policy interventions can yield meaningful impact. For example, transitioning to renewable energy sources and innovating in cooling technology emerge as prime avenues for decarbonisation.
One of the study’s technical breakthroughs is the detailed assessment of modular cooling solutions. Unlike conventional chilled water systems, these scalable modules leverage ambient conditions, liquid cooling, and intelligent airflow management, greatly improving energy efficiency. The research quantifies how such systems can reduce cooling energy consumption by up to 40%, a transformative shift given that cooling can constitute nearly half of a data centre’s total energy demand. By coupling advanced cooling with AI-driven energy management, operators can dynamically optimize performance, reacting instantly to fluctuations in workload and climatic variables.
Renewable energy integration stands as another cornerstone of the proposed sustainability framework. The study emphasizes synergistic co-location of data centres with renewable energy generation—solar farms, wind turbines, and emerging technologies like green hydrogen. Through smart grid technologies and energy storage solutions, data centres can mitigate intermittency challenges commonly associated with renewables. This not only reduces reliance on fossil fuels but also stabilizes urban electrical grids challenged by variable demand and supply, promoting resilience and energy equity.
In discussing urban planning, the researchers reveal how data centres often become islands of energy consumption divorced from the surrounding city fabric. By embedding these facilities within multi-use urban developments, the digital infrastructure can be harnessed for district energy sharing, waste heat recovery, and community microgrids. Such integration promotes circular resource flows, where excess thermal energy from servers warms nearby buildings or powers local greenhouses, closing feedback loops and generating new economic opportunities.
Policy considerations permeate the study’s recommendations, highlighting the necessity of cross-sector collaboration. Effective decarbonisation requires municipal governments to set ambitious carbon targets specifically for data infrastructure while incentivizing private-sector innovation through subsidies and carbon pricing mechanisms. Transparent reporting standards and certifications for “green data centres” can drive competitive advantage, nudging the industry toward best practices centered on both energy efficiency and social responsibility.
Addressing the rapidly evolving regulatory environment, the study underscores the importance of anticipatory governance. Urban policymakers must foresee and manage emerging risks posed by digital infrastructure expansion, ensuring that electrification and decarbonisation efforts do not get stymied by fragmented policy frameworks. Streamlined permitting processes and multi-stakeholder partnerships, including utilities, technology firms, and community groups, are critical enablers for scalable sustainable data centre deployment.
On the technology frontier, artificial intelligence and machine learning are leveraged within the research to optimize energy consumption patterns in real time. By forecasting computational loads and ambient temperature variability, AI systems can orchestrate server utilization, cooling intensity, and power sourcing with unprecedented precision. This digital intelligence layer acts as a force multiplier, allowing existing hardware to operate more sustainably without necessitating costly physical overhauls.
The study also critically examines barriers to decarbonisation. Legacy infrastructure, high capital costs, and the complexity of retrofitting existing facilities pose significant challenges. Furthermore, disparities between global regions—where developing economies may have limited access to green energy solutions—highlight the need for tailored approaches that couple technology deployment with capacity building and financing innovations.
Socio-environmental equity is another vital dimension addressed. As data centres proliferate in urban zones, communities vulnerable to pollution and energy insecurity risk disproportionate impacts unless sustainability is woven into infrastructural design from inception. The authors argue for inclusive planning processes that prioritize transparency and community benefits, ensuring that green digital infrastructure contributes holistically to urban wellbeing.
Looking ahead, the research envisions a future where zero-carbon digital infrastructure is not merely an ideal but a practical reality. Integrated urban ecosystems could host sensory networks, smart transportation hubs, and digital services powered by sustainable data centres that are silent partners in city life. This vision aligns with the United Nations’ Sustainable Development Goals, positioning decarbonised digital infrastructure as a key enabler for climate action and resilient urban growth.
Crucially, the paper’s innovative modeling framework provides policymakers and industry leaders with quantitative tools to evaluate different decarbonisation pathways under variable urban contexts. This adaptability is vital as cities grapple with unique geographic, climatic, and economic conditions. Digital twins and scenario analysis embedded in the framework can elucidate trade-offs and synergistic opportunities, enabling data-driven decision-making.
In conclusion, the work of Liu, Lai, Seah, and colleagues sets a new benchmark for understanding and addressing the carbon footprint of digital infrastructure. Their interdisciplinary approach—marrying engineering, urban planning, energy policy, and social sciences—offers a roadmap toward harmonizing the digital revolution with planetary boundaries. As climate urgency escalates, this research not only highlights pressing challenges but importantly charts actionable solutions essential for a sustainable digital future.
Subject of Research: Decarbonisation of digital infrastructure with a focus on data centres and their role in urban sustainability.
Article Title: Decarbonising digital infrastructure and urban sustainability in the case of data centres.
Article References:
Liu, F.H.M., Lai, K.P.Y., Seah, B. et al. Decarbonising digital infrastructure and urban sustainability in the case of data centres. npj Urban Sustain 5, 15 (2025). https://doi.org/10.1038/s42949-025-00203-1
Image Credits: AI Generated
Tags: climate change and technologydecarbonizing digital infrastructureeco-friendly data storage solutionsenergy efficiency in computingenvironmental impact of data centersfuture of urban digital infrastructureimplications of 5G and IoTinnovative research in sustainabilityreducing carbon footprint in technologyRenewable Energy in Data Centerssustainable data center practicesurban sustainability goals