Iren Acquires Spanish Data Center Firm Nostrum

Iren, a company strategically pivoting from cryptocurrency mining to AI cloud infrastructure, has significantly bolstered its European presence through the acquisition of Spanish data center developer Nostrum. This move establishes a crucial foothold on the continent, adding approximately 490MW of secured, grid-connected power capacity in Spain and integrating a team of 50 professionals into Iren's operations. The financial terms of the transaction were not disclosed, though market speculation regarding Nostrum's search for an investment partner had surfaced previously.

The acquisition of Ingenostrum, S.L. (Nostrum Group) marks a pivotal moment for Iren, enabling the company to leverage Nostrum's established portfolio of development projects. These include substantial sites in Extremadura (Badajoz and Cáceres, each 214MW), Castile-La-Mancha (Guadalajara, 29MW and Pinto, 21MW), the Basque Country (Zamudio, 21MW), and Galicia (18MW). Notably, Nostrum's facility in Galicia is reportedly operational with an initial 8.5MW phase, with plans for future expansion to 40MW, underscoring its development momentum.

This strategic integration is designed to accelerate Iren's growth in the burgeoning AI infrastructure sector. Daniel Roberts, Co-CEO of Iren, highlighted the acquisition's importance, stating, “This acquisition establishes a strategic platform in Europe for Iren. Nostrum adds high-quality sites, an experienced local team and a leading position in an attractive market for AI infrastructure. These capabilities support the next phase of growth of our vertically integrated AI Cloud platform.” The synergy is expected to enhance Iren's ability to serve the increasing demand for AI compute power across Europe.

Nostrum's prior involvement with renewable energy infrastructure, including claims of 5GW of operational renewable capacity and an additional 1GW under development, suggests a strong foundation for powering energy-intensive data center operations. In 2023, Andera Infra, the green infrastructure arm of Andera Partners, acquired a minority stake in the company, signaling confidence in its renewable energy and infrastructure development capabilities. This existing expertise in sustainable energy solutions aligns well with the growing emphasis on green data center development.

Iren's strategic shift towards AI cloud services is a significant industry trend, mirroring a broader market movement away from speculative digital asset operations towards more tangible, high-demand technology sectors. The company, formerly known as Iris Energy, is actively reallocating resources from its Bitcoin mining activities to its AI business. With a current fleet of approximately 23,000 GPUs and secured contracts for a substantial portion, Iren is positioning itself as a key player in the AI compute market. Major clients like Microsoft and a significant investment commitment from Nvidia, up to $2.1 billion for 5GW of compute deployment, underscore Iren's strategic direction and market potential.

Further expanding its global ambitions, Iren has indicated plans for future development in Australia, citing significant opportunities comparable to its existing portfolio. This international expansion, coupled with the recent announcement of a $625 million acquisition of cloud infrastructure software provider Mirantis, demonstrates Iren's aggressive growth strategy. Despite recent financial reporting showing a net loss of $247.8 million on revenues of $144.8 million for Q3 FY2026, driven by factors such as Bitcoin price fluctuations and hardware decommissioning, the company's strategic investments signal a strong focus on future profitability within the AI sector.