CRITICAL MINERAL COMPANIES · RESEARCH
Lithium companies & projects in Ontario
Battery chemicals, electric vehicles and stationary energy storage. Explore 12 documented lithium assets in Ontario, their companies, source classifications and related regional opportunities.
Asset counts by province / state · select a region
Canada’s mapped coordinates come from NRCan’s 2025 inventory. U.S. assets are mapped by state using USGS’s June 2026 release. Asset counts describe directory coverage.
MINERAL EXPOSURE
Ontario at a glance
SUPPLY-CHAIN ACTIVITIES
Where assets fit
One asset can report several minerals. An organization may participate in multiple assets. Activity grouping describes the source record, and does not confirm current production, commercial availability or investment readiness.
GLOBAL SUPPLY CONTEXT · 2025 ESTIMATES
Lithium: production & import dependence
World production excludes U.S. production; lithium content. USGS Mineral Commodity Summaries 2026, Table 7 ↗. These global estimates are separate from this directory’s asset counts.
THE ASSET INVENTORY
Projects, mines & facilities
| Project / facility | Minerals | Region | Source classification |
|---|---|---|---|
| Battery Materials Park ↗Electra Battery Materials Corporation | Cobalt · Lithium · Nickel | OntarioCanada | Advanced processing projectActive · 2025-12-31 |
| Georgia Lake ↗Rock Tech Lithium | Lithium | OntarioCanada | Studies & permittingSee company disclosures · 2026-09-10 |
| Lake Superior Lithium ↗Avalon Advanced Materials | Lithium | OntarioCanada | Processing developmentSee company disclosures · 2026-09-10 |
| Lake Superior plant ↗Avalon Advanced Materials | Lithium | OntarioCanada | Advanced processing projectActive · 2025-12-31 |
| Lithium Hydroxide Refinery ↗Rock Tech Lithium | Lithium | OntarioCanada | Advanced processing projectActive · 2025-12-31 |
| Lithium Refinery ↗Frontier Lithium | Lithium | OntarioCanada | Advanced processing projectActive · 2025-12-31 |
| PAK ↗Frontier Lithium | Lithium | OntarioCanada | Studies & permittingSee company disclosures · 2026-09-10 |
| Pakeagama Lake ↗Frontier Lithium | Cesium · Lithium · Niobium · Rubidium | OntarioCanada | Advanced projectActive · 2025-12-31 |
| Raleigh ↗International Lithium Corporation | Lithium · Rubidium | OntarioCanada | Advanced projectActive · 2025-12-31 |
| Separation Rapids ↗SCR-Sibelco N.V. | Lithium · Tantalum | OntarioCanada | Advanced projectActive · 2025-12-31 |
| Seymour Lake (Root Lake) ↗Green Technology Metals Limited | Lithium · Tantalum | OntarioCanada | Advanced ProjectActive · 2025-12-31 |
| Thunder Bay Plant ↗Green Technology Metals Limited | Lithium | OntarioCanada | Advanced processing projectActive · 2025-12-31 |
CORPORATE FOOTPRINT
Companies & operators
Avalon Advanced Materials ↗
Lithium · Niobium · Rare earths · Tantalum · Tin
Electra Battery Materials Corporation ↗
Cobalt · Lithium · Nickel
Frontier Lithium ↗
Cesium · Lithium · Niobium · Rubidium · Tantalum
Green Technology Metals Limited ↗
Lithium · Tantalum
International Lithium Corporation ↗
Lithium · Rubidium
Rock Tech Lithium ↗
Lithium
SCR-Sibelco N.V. ↗
Lithium · Tantalum
CONTINUE YOUR RESEARCH
Mineral sectors in Ontario
Research sources
- Natural Resources Canada — critical minerals inventory ↗Inventory: 2025-12-31 · Checked 2026-09-10
- Rock Tech Lithium — official company information ↗Checked 2026-09-10
- Rock Tech Lithium — project information ↗Checked 2026-09-10
- Rock Tech Lithium — official company information ↗Checked 2026-09-10
- Rock Tech Lithium — official company information ↗Checked 2026-09-10
- Avalon Advanced Materials — official company information ↗Checked 2026-09-10
- Avalon Advanced Materials — project information ↗Checked 2026-09-10
- Avalon Advanced Materials — official company information ↗Checked 2026-09-10
Each asset profile includes its source references and dates. Read the coverage, data licences and review methodology ↗.