The Net-Zero Countdown for Data Centers Has Begun

Global demand for computing power has reached record levels. Data center capacity is expected to grow by roughly 16% annually through 2028, fueled by cloud adoption, artificial intelligence, and digital transformation. Yet as the world’s dependence on data infrastructure deepens, so too does its environmental footprint. The question, according to engineering consultancy Ramboll, is whether data centers can truly become sustainable while meeting soaring digital demand.

In its new white paper, Developing Sustainable Data Centers: A Strategic Roadmap to Achieve Net Zero Carbon and Reduce Environmental Impact, Ramboll outlines six key benchmarks - operational carbon, embodied carbon, water, energy, biodiversity, and circularity - that define both the industry’s greatest challenges and its clearest opportunities.

Operational and Embodied Carbon Operational emissions remain the largest contributor to a data center’s footprint, heavily influenced by the carbon intensity of national grids. Locating facilities in regions with a higher share of renewables can reduce emissions, but heat recovery and reuse should also become standard practice. Exporting waste heat to nearby communities can displace other heating needs, providing measurable social value.

Embodied carbon from construction materials requires early-stage intervention. Ramboll urges procurement of low-carbon steel and concrete and early collaboration with suppliers to minimize embedded emissions. Carbon offsets should serve only as a last resort under credible standards like the Verified Carbon Standard.

Water, Biodiversity, and Circularity With the UK projected to face a daily water deficit of several billion liters by the 2030s, water-intensive data centers are increasingly unsustainable. Developers are advised to implement rainwater harvesting, grey-water systems, and renewable-powered cooling to conserve water resources.

Meanwhile, the UK’s mandatory Biodiversity Net Gain requirement compels developers to leave habitats in better condition post-construction - a principle Ramboll says should extend across global supply chains, including the responsible sourcing of rare earth elements.

Transitioning from a “take–make–dispose” model to one centered on circular economy principles - recovering precious metals, reusing equipment, and recycling materials - can reduce emissions and enhance supply chain resilience.

A Call to Lead, Not React The rapid rise of AI is accelerating the sector’s energy consumption. Ramboll warns that sustainable design is no longer optional but a business imperative. Waiting for regulations such as the EU Energy Efficiency Directive to take full effect risks reactive compliance rather than proactive leadership.

The firm identifies lifecycle financing, modular construction, early-stage sustainability planning, and waste-heat recovery as tangible pathways toward net zero. Collaboration across supply chains and stronger procurement standards will be essential.

“The time for incremental progress has passed,” Ramboll concludes. “If the industry doesn’t shape the future of sustainable data centers itself, it will be shaped for them - and by then, it may be too late.”