Sherritt Shuts Down Alberta Refinery Amid Cuba Supply Uncertainty

Event summary

  • Sherritt has begun a controlled shutdown of its Fort Saskatchewan refinery, aligning with mid-June expectations based on feed inventory.
  • The shutdown will persist until Moa, Cuba operations resume and the refinery feed pipeline is rebuilt—no timeline provided.
  • Sherritt maintains suspension of direct participation in Cuban joint venture activities as previously announced.
  • Essential maintenance will proceed during downtime without significant capital investment; fertilizer/sulphuric acid production continues.

The big picture

Sherritt’s refinery shutdown underscores the vulnerability of North American critical minerals refining to geopolitical disruptions. As one of only three nickel refineries on the continent, its operational status has broader implications for domestic energy transition supply chains. The company’s ability to navigate Cuban regulatory and U.S. sanctions risks will determine the timeline for resuming production.

What we're watching

Geopolitical Risk
How U.S. government actions toward Cuba may impact Sherritt’s ability to resume operations.
Liquidity Management
Whether cost-cutting measures will suffice during prolonged shutdown without capital investment.
Supply Chain Recovery
The pace at which Moa joint venture activities and feed pipeline reconstruction progress.