A reliable and high-performing cleantech sector
Ontario cleantech partners integrate environmental stewardship and resource efficiency with business success, providing reliability and resilience in a rapidly evolving sector. We are home to Canada’s largest cleantech sector, making up over one third of the national market. In 2024, Ontario businesses exported nearly $7.8 billion in cleantech, reflecting 7% growth over five years.
Ontario companies are transforming bold ideas into real-world solutions that benefit the planet and drive global progress. Domestically, Ontario’s cleantech companies are enabling manufacturing competitiveness as well as technology adoption and innovation capacity across various industries, including in both traditional and emerging industries.
Milestones like phasing out coal in 2014 — the largest single greenhouse gas (GHG) reduction measure in North America — and achieving almost 81% emissions free energy production (2025), highlight the province’s commitment to sustainability. This dedication is mirrored in the success of over 5,000 cleantech and environment companies, with three companies ranked among the 2025 Global Cleantech 100 — e-Zinc, Enersion and Cyclic Materials.
An accessible supply chain that reduces costs
Ontario’s cleantech sector benefits from Canada’s 15 free trade agreements covering over 50 countries, ensuring most products ship virtually tariff-free to the Europe and many parts of Asia and South America. The province’s robust transportation infrastructure includes 13,000 km of railway, 30 ports and four international airports, including Toronto Pearson International Airport — making it seamless to ship your products and services to all corners of the world.
Businesses operating here gain a competitive edge through the province’s energy-efficient ecosystem, where 81% of electricity comes from non-emitting sources (2025). This low-cost, sustainable energy infrastructure supports both operational savings and environmental stewardship. Ontario companies ensure compliance with ethical and regulatory standards, providing transparency and expertise at every stage of the supply chain.
Who’s here
Ontario businesses provide diverse solutions to minimize environmental impacts, optimize resource use, redesign supply chain processes and manage product lifecycles to support a circular economy model.
- Accelera by Cummins
- Char Technologies
- Cyclic Materials
- Ecobee
- E-Zinc
- GE Vernova
- Greenfield Global
- Green Mantra Technologies
- Hatch
- Heliene
- Hydrogen Optimized
- Hydrostor
- Nextstar
- Pond Tech
- PowerCo
- Schneider Electric
- Siemens
- Silfab Solar
- Trojan Technologies
- Veolia
- [more companies in various subsectors available upon request]
Thinking about the next generation
Our cleantech companies benefit from a diverse workforce, enabling them to develop groundbreaking technologies that align with international climate goals and maintain competitiveness in the global market. Backed by a strong STEM talent pipeline, the province produced more than 94,000 graduates in 2024-2025 and is home to more than 100 research institutes, universities and colleges, all working to address global environmental challenges.
This skilled workforce supports innovations across a range of subsectors, from energy storage and smart grid to precision agriculture, hybrid chemistry and beyond, making us Canada’s top filer of patents. With over 2,000 cleantech patents filed by Ontario cleantech innovators since 2010, we are ensuring Ontario remains a hub for transformative ideas and solutions that cater to your products and services.