O-Green plans a €7.4 billion data center campus in San Mateo de Gállego, Zaragoza, Spain, with the fund linked to Oman.
Omani renewable energy firm O-Green is planning a data center project in Zaragoza, Spain, that is reportedly set to replace Vantage's previously announced project in the area.
In September 2025, the multinational company Vantage Data Center announced a €3.2 billion ($3.6bn) investment in Zaragoza. A year later, the project reportedly has a new financial partner and a new location.
El Economista reports that the Omani fund O-Green, together with the Aragonese group Desarrollos Ecoindustriales La Cartuja, will instead develop a campus in San Mateo de Gállego with a projected investment of €7.4 billion ($8.3bn) and a target capacity of 570MW.
The original initiative was planned in Villanueva de Gállego in partnership with Vantage Data Centers, but the developers are said to have dissolved that alliance and moved the project to San Mateo. DCD has reached out to Vantage for comment.
The new campus, called CDC San Mateo, is being developed by Copiapo, which is linked to Atalaya Generación Eólica and Posidonia Inversiones, and is financed by O-Green, a fund affiliated with the Sultanate of Oman. O-Green's website lists a planned facility in Aragón.
The complex will occupy approximately 122 hectares south of the Río Gállego 1 industrial park. The plan calls for seven buildings spread across four phases, designed to host hyperscale workloads and high-density artificial intelligence applications, totaling some 1.22 million sqm (13 million sq ft).
The campus is set to offer 90MW in the first phase and could go live in 2029. According to the project documentation, it has permits for access to the distribution grid for 80MW at the Peñaflor substation and 10MW at the Villanueva de Gállego substation.
The developers have also requested additional capacity, but these requests are still pending. Even if the requests were granted, the available power would not cover the total target of 570MW. The timeline for subsequent phases will therefore depend on the allocation of new capacity and demand from future customers.
Cooling and water are two other issues that need to be resolved. The document considers dry, hybrid, or evaporative cooling alternatives, depending on customer needs. It also plans to draw water from the Gállego River but does not quantify consumption for the entire campus. The figure published for the first phase is 225 cubic meters per day.
The project has begun preliminary consultations to determine the scope of its strategic environmental assessment. The procedure covers both the campus and the planned electrical and fiber-optic connections in several municipalities in the area. The developers are also awaiting the Government of Aragon's declaration that the investment is of regional interest.
Primarily a renewable energy developer, O-Green Power's project portfolio spans 12 countries and exceeds 11GW. Its secured portfolio tops 3.3GW of wind and solar, plus more than 2.3GWh of battery energy storage systems (BESS) in Oman and Botswana, the firm said. O-Green is targeting more than 200MW to be ready for service by 2028 across Oman, Spain, and Europe.