Penouta Tin-Tantalum-Niobium
Penouta Tin-Tantalum-Niobium
Energy Transition Minerals is completing the acquisition of the Penouta Project in Galicia, Spain, in 2026, securing ownership of Europe’s only developed tin-tantalum-niobium mine.
Penouta provides ETM with:
- Near-term production leverage
- A strategic EU footprint
- Alignment with the EU Critical Raw Materials Act
The Penouta Mine is being acquired through the insolvency process of the previous owner of the mine, Strategic Minerals Spain, and last operated in October 2024.
The project includes an open pit mine, crushing-grinding-gravity processing plant tailored to its polymetallic ore, engineered tailings facilities and supporting infrastructure.
The Penouta assets are being acquired at a significant discount to historical invested capital and offers strong potential for a rapid re-start of production, with:
- Mineral Resource Estimate (MRE) released in May 2026. View full resource statement.
- Existing mine and processing infrastructure
- Existing resource data and prior operational history – providing for an accelerated timeline compared to greenfield projects.
As the only advanced tin-tantalum-niobium deposit within the European Union, Penouta offers a significant geopolitical advantage – particularly as both tin and tantalum feature prominently on the EU’s and US’s strategic minerals lists.
