Status
Under construction: status carried from the legacy record
Product: Lithium hydroxide. Capacity: 34 kt/yr (Planned nameplate (legacy 20 kt)).
Quebec government and Rio Tinto (via Arcadium) own Nemaska; fed by the Whabouchi mine.
Plant record
Plant record
| Company | Rio Tinto (Nemaska Lithium) |
| Plant | Becancour Lithium Hydroxide Plant |
| City | Becancour |
| State or province | Quebec |
| Country | Canada |
| Stage | chemical |
| Chemistry or product | Lithium hydroxide |
| Capacity (kt/yr) | 34 |
| Capacity basis | Planned nameplate (legacy 20 kt) |
| Status | under construction |
| Status note | Status carried from the legacy record; not re-verified |
| Scale | commercial |
| Geopolitical exposure | LOW |
| Record updated | 2026-10 |
Official site: riotinto.com
In context
Where it fits
Listed in Cathode Active Materials. Cathode plants are compared on stage (chemical, precursor or finished CAM), chemistry, capacity and qualified customers; a plant qualified for one chemistry and one cell maker is not interchangeable supply.
| Plant | Country | Status |
|---|---|---|
| Candiac LFP Plant (Nano One Materials) | Canada | operational |
| Fort Saskatchewan Refinery (Sherritt International) | Canada | operational |
| Sarnia Precursor Plant (Toda Advanced Materials) | Canada | operational |
| Long Harbour Nickel Refinery (Vale Base Metals) | Canada | operational |
| Ontario Cobalt Refinery (Electra Battery Materials) | Canada | under construction |
| Becancour CAM Plant (Ultium CAM (GM and POSCO Future M)) | Canada | under construction |
| Clearwater Project (E3 Lithium) | Canada | announced |
| EcoPro Canada (EcoPro BM) | Canada | paused |
Sources
Sources and scope
- Scope
- Becancour Lithium Hydroxide Plant (Rio Tinto (Nemaska Lithium))
- Sources
- ElectronsX cathode dataset; company disclosures and filings
- Updated
- 2026-10