Key Takeaways

  • Aragón could attract more than €60 billion in data-centre and digital-infrastructure investment over the next decade.
  • Accelerated PIGA approvals have shortened development timelines, but they may also limit the time available for public scrutiny.
  • Electricity and water requirements could rise sharply by 2035, putting efficiency reporting and resource planning at the center of future approvals.

Aragón has emerged as one of Europe’s most active data-centre development markets, with Amazon and Microsoft among the technology companies drawn to the Spanish region. More than €60 billion in data-centre and related digital-infrastructure investment is projected over the next decade, according to Reuters reporting.

A central attraction is speed. Through the Project of General Interest of Aragón, or PIGA, qualifying developments can move through planning and approval in under 12 months. Comparable processes might otherwise take years. For cloud providers trying to secure power, land and construction capacity during the artificial-intelligence infrastructure boom, that difference carries substantial commercial value.

Europe, after all, trails the United States and China in overall data-centre capacity. Regional governments are under pressure to attract investment while hyperscalers race to add computing resources for AI training, inference and conventional cloud workloads. Aragón offers available land, renewable-energy potential and a strategic position connecting major Spanish and European markets.

But the accelerated model carries trade-offs. Faster reviews can compress the period available for evaluating cumulative effects across multiple projects, especially when electricity demand, grid connections and water withdrawals are assessed development by development. A facility may appear manageable in isolation. A cluster of hyperscale campuses is a different proposition.

The potential energy impact is considerable. A University of Zaragoza scenario analysis estimates that Aragón’s electricity demand could increase sixfold to fifteenfold by 2035. Data centres and green-hydrogen production would account for 85% of demand under the modeled scenarios, while data centres alone could consume as much as 36,600 GWh annually.

That does not mean every announced project will be completed or operate at full planned capacity. Investment pipelines often contain overlapping proposals, phased construction and capacity that depends on future grid access. Still, the scenarios show why headline investment totals tell only part of the story. Transmission upgrades, new generation and flexible demand arrangements will influence how much capacity can actually enter service.

Water is the other constraint, and perhaps the more politically sensitive one. The University of Zaragoza analysis estimates that announced data centres could require between 4.6 million and 21.0 million cubic metres annually. In higher-demand scenarios, water use across Aragón’s economic sectors could rise by 76% to 124%.

Data-centre water consumption varies widely according to cooling design, operating temperature, climate and the source of electricity. Water Usage Effectiveness, or WUE, can help compare facilities, but a single annual metric may obscure seasonal demand during hot or dry periods. What happens when digital infrastructure, agriculture and urban users all require more water at the same time?

AWS says its Aragón facilities consumed approximately 68 million litres in 2025. The cloud provider also plans to invest €33.7 billion in the region through 2035. The water figure is company-reported and reflects existing operations, rather than an independent forecast of consumption once the wider investment program is built.

Regulation is beginning to catch up. Spain’s draft data-centre rules would require facilities of at least 500 kW to report energy use, water consumption and efficiency data. Projects exceeding 100 MW would need to place within the top 15% on indicators that include Power Usage Effectiveness, known as PUE, and WUE. The EU Energy Efficiency Directive also establishes reporting requirements intended to make large data-centre operations more transparent.

For enterprise customers, the implications extend beyond where cloud regions appear on a map. Resource constraints can affect capacity availability, pricing, resilience planning and sustainability disclosures across the technology supply chain. Buyers may increasingly ask providers for location-specific PUE and WUE figures, not just global averages.

Aragón’s experiment could become a template for expanding Europe’s digital capacity quickly. It could also demonstrate the limits of treating approvals as the main bottleneck. The next phase will depend less on how rapidly projects receive planning status and more on whether grids, water systems and oversight processes can keep pace with the scale already announced.