Sherritt Refinery Shutdown Exposes Canada’s Dependence on Cuban Nickel Feed

Sherritt International

Sherritt refinery shutdown plans will halt nickel and cobalt production at the company’s Fort Saskatchewan facility in Alberta after feedstock from Cuba’s Moa joint venture ran out. The move highlights how upstream disruption can strand downstream refining capacity even in a politically secure jurisdiction.

Sherritt refinery shutdown operations will remain in place until mining and processing at Moa can resume and mixed sulfide precipitate shipments to Canada are restored. The company has not given a restart timeline.

Sherritt refinery shutdown is strategically important because Fort Saskatchewan converts Cuban mixed sulfide precipitate into finished nickel and cobalt. The refinery therefore depends on continuity across mining, processing, shipping and sanctions-sensitive trade routes.

Sherritt will use the shutdown period to complete maintenance work. Fertilizer and sulfuric acid production will continue, preserving part of the site’s industrial activity while nickel and cobalt refining is suspended.

Moa Feed Disruption Strands Canadian Refining Capacity

The Fort Saskatchewan refinery relies on the Moa joint venture in Cuba for its nickel and cobalt feed. Ore is mined and processed at Moa into mixed sulfide precipitate before being shipped to Alberta for refining.

That supply chain began to weaken in February when fuel shortages forced the joint venture to suspend mining operations. Feed inventories in Canada subsequently declined, with Sherritt previously expecting available material to last only until mid-June.

The problem then became more complex in May. Sherritt suspended direct participation in the Moa joint venture after the US expanded sanctions on Cuba under the International Emergency Economic Powers Act.

The company has maintained that suspension, leaving the future of Cuban production uncertain. Without fresh MSP shipments, Fort Saskatchewan cannot continue normal nickel and cobalt refining.

This illustrates a critical supply-chain weakness. Refining assets may sit inside Canada, but their security still depends on where upstream feed originates.

For North American critical minerals policy, that distinction matters. Domestic refining capacity does not create supply independence if raw materials remain tied to politically exposed jurisdictions.

Nickel and Cobalt Supply Security Shifts Toward Feedstock Control

Nickel and cobalt remain important to batteries, superalloys, aerospace, industrial chemicals and defence-related manufacturing. Reliable refining capacity is therefore strategically valuable.

But Sherritt’s shutdown shows that feedstock security must be treated as part of refinery security. A plant without dependable concentrate or intermediate supply becomes an idle asset regardless of its technical capability.

The Fort Saskatchewan site still has value because its processing infrastructure and operating expertise remain in place. Maintenance during the shutdown may help preserve restart readiness if Moa supply resumes.

However, the absence of a clear restart timeline increases uncertainty. Sherritt must either restore the Cuban supply chain or eventually secure another viable feed route if the disruption becomes prolonged.

The situation also raises a broader question for western critical minerals strategies. Governments are investing heavily in domestic processing, but those projects need diversified and compliant raw material sources to remain resilient.

Sherritt’s experience shows why mining, intermediate processing and refining must be planned as one integrated supply chain rather than separate assets.

The Metalnomist Commentary

Fort Saskatchewan is a reminder that secure refining capacity is only as strong as its feedstock chain. Canada can host the refinery, but without reliable upstream material, geopolitical risk still determines whether nickel and cobalt actually reach the market.