EU Court challenge puts Portugal’s Barroso lithium project in the spotlight

A long-running fight over a proposed lithium mine in northern Portugal has escalated to the European Court of Justice, underscoring how Europe’s push for battery materials is colliding with local environmental and community concerns. On 5 February, Associação Unidos em Defesa de Covas do Barroso (UDCB) and environmental law organisation ClientEarth filed a legal challenge against the European Commission’s decision to classify the Barroso project as “strategic”.

Challenge targets “strategic” designation under the Critical Raw Materials Act

The applicants argue that the Commission did not sufficiently reassess the project after new evidence emerged pointing to potential environmental, social and safety risks. They cite concerns including threats to water resources, biodiversity and local livelihoods.

The case turns on the EU’s 2024 Critical Raw Materials Act, which designates certain projects as “strategic”. That status is intended to speed up permitting and reduce administrative hurdles, while also making it easier to secure financing for key raw materials needed for the green economy—such as electric vehicles and batteries.

Barroso sits in an ecologically sensitive area

The Barroso site near Boticas in Trás-os-Montes is located above what is described as Europe’s largest known spodumene deposit, a key source of lithium used in batteries and mobile devices. However, campaigners say its placement within an ecologically sensitive landscape—recognized by the UN’s FAO as a “Globally Important Agricultural Heritage System”—raises heightened stakes for environmental protection.

Commission rejects removal request; says compliance is for Portugal

The European Commission listed Barroso among 47 “strategic” projects across the EU. Campaigners had requested its removal in June, but the Commission rejected that appeal in November, arguing that compliance with EU law is primarily a matter for Portuguese authorities.

Officials have maintained Barroso’s strategic status, pointing to mitigation and monitoring measures intended to limit pressure on local water resources. Even so, UDCB and ClientEarth warn that treating the project as being in the public interest while allegedly overlooking documented risks would undermine fundamental EU legal principles. They also argue it could effectively turn rural regions such as Barroso into “sacrifice zones” for parts of Europe’s energy transition.

Europe seeks battery supply security as Portugal backs development

The dispute takes place against a broader effort to reduce dependence on foreign suppliers—particularly China—for critical raw materials tied to climate and industrial goals. Portugal’s government has backed the project, awarding €110 million to developer [[PRRS_LINK_5]].

The mine could potentially produce enough lithium annually to supply hundreds of thousands of electric vehicle battery packs—up to one million—positioning it among the EU’s largest proposed sources of lithium.

Water use and contamination risks remain central

Lithium extraction is described as water-intensive and carries contamination risks. Critics argue that even if lithium is strategically important, it may not justify potential environmental harm.

Savannah Resources says design improvements and monitoring measures have significantly reduced risks to surface and groundwater and are intended to ensure compliance with EU water protection laws.

A potential precedent for how strategic minerals are weighed against safeguards

For investors and policymakers alike, the Barroso case could become a test of how far strategic mineral priorities can go when they meet local opposition and environmental constraints. The outcome at the European Court of Justice may influence how the EU balances demand for critical materials against protections for ecosystems and communities—and could set a precedent affecting other mining projects granted “strategic” status under the Critical Raw Materials Act.

Ultimately, the ruling will be watched closely for what it signals about whether commercial momentum behind energy transition minerals will override environmental safeguards—or whether rural communities and sensitive landscapes will be protected from being treated as expendable costs of Europe’s green push.