If you're wondering where the major advances in cleantech innovation are taking place, there's a good chance they're in Ontario – Canada's powerhouse for cleantech growth.

Ontario companies are leading innovation in cleantech

Ontario's cleantech companies are helping organizations and communities around the world implement effective, efficient solutions to tough environmental challenges. From mitigating the impacts of climate change and urbanization to delivering clean drinking water, Ontario's cleantech industry is at the forefront of sustainable development. Here are some examples of leading companies that call the province home:

Hydrostor Inc. is a Toronto-based start-up that has developed an energy storage solution that addresses intermittent (solar and wind) load balancing, reserve capacity and peak-shaving.

Hydrogenics is implementing fuel cell and hydrogen systems to help customers shift power to a cleaner energy future.

Silfab Solar is a Mississauga-based company that produces high-efficiency photovoltaic modules for solar power generation.

Lystek International Inc. is a Cambridge-based organic materials recovery firm that is helping municipalities and other generators to reduce waste, costs, odours and greenhouse gas emissions through its innovative approach to bio-solids and organics management.

Trojan Technologies is a London-based firm behind the development of leading water treatment solutions using UV light. It provides products and services designed to make various stages of the water treatment process more effective, efficient and sustainable.

Pond Technologies is a Markham-based venture that utilizes microalgae to convert the CO2 emissions of major industrial emitters into biofuel, through the process of photosynthesis, and ultimately into bio-oil and biodiesel.

Aslan Technologies is a Burlington-based design and manufacturing company serving the chemical, water and wastewater treatment industries.

Ontario offers an amazing support system for cleantech companies

Water Technology Acceleration Project (WaterTAP) supports Ontario's status as a world water technology hub by helping water technology entrepreneurs, utilities and investors.

Ontario Environment Industry Association (ONEIA) represents more than 200 companies, providing environmental products, technologies and services to government and industry.

Canadian Solar Industries Association (CanSIA) promotes and advances all forms of solar energy for the benefit of Canadians and the environment.

Canadian Wind Energy Association (CanWEA) represents organizations and individuals directly involved in the development and application of wind energy technology, products and services.

Ontario Sustainable Energy Association (OSEA) represents organizations and individuals developing renewable energy and community power projects.

Advanced Energy Center fosters the adoption of innovative energy technologies in Ontario and Canada and leverages those successes and experiences into international markets.

Energy Storage Ontario is a membership-based organization that advances the energy storage industry in Ontario through collaboration, education, policy advocacy and research.

Bloom Centre for Sustainability connects public and private stakeholders to drive innovative solutions that manage risk while delivering economic, environmental and social benefit.

The Southern Ontario Water Consortium (SOWC) encourages collaboration between private companies and academic researchers to accelerate and commercialize innovative water technologies.


Infographic 1: Ontario is shaping the future of cleantech

Ontario's strategic push to promote environmentally friendly technologies to tackle global warming is attracting top talent and investment. The numbers tell an exciting story:

  • Ontario is home to 3,000 Canadian cleantech and environmental technology companies, employing 65,000 people.
  • Ontario's environmental and cleantech industry generates an estimated $8 billion in annual revenues.
  • International buyers of cleantech products source $1 billion in cost-effective solutions from Ontario annually.
  • 35% of Canada's innovative clean technology companies are located in Ontario.
  • The Toronto Stock Exchange and the TSX Venture Exchange list 110 clean technology and renewable energy companies. With a market capitalization of $30 billion, this is the largest concentration of cleantech capital in the world.
  • Ontario has phased out all coal-fired generation – North America's single largest climate change initiative.

Infographic 2: Ontario's cleantech strength in numbers

Thanks to its top talent and tremendous support system, Ontario has strengths in clean technology subsectors across the board:


  • Installed PV capacity over 2 GW, enough to place Canada among the top 20 solar countries worldwide.
  • Home to the second largest solar manufacturer in the world, Canadian Solar.


  • Ontario is a wind energy leader in Canada with over 3,500 MW of installed wind capacity.


  • Water and wastewater technologies is the largest cleantech subsector.
  • 900 innovative firms, generating 22,000 jobs.


  • 495 MW in biofuel or biomass generation facilities.
  • Out of the total 809 million litres/year of biodiesel capacity in Canada, more than a third of national production is in Ontario at 296 million litres/year.

Smart Grid:

  • Ontario is a leader in developing smart grid policies through the Green Energy Act and the Long-Term Energy Plan. Ontario was the first jurisdiction in North America to equip small businesses and houses with 4.7 million smart meters, enabling time-of-use pricing.
  • Ontario is investing in new smart grid technologies, such as self-healing grids, micro-grids and advanced metering infrastructure.

Energy Storage:

  • Ontario is recognized as an early leader in the development and deployment of Energy Storage technologies.
  • Niagara Falls has been used for more than six decades for 170 MW of energy storage capacity for the provincial grid, pumping water into a reservoir during off-peak hours.
  • The province's Long-Term Energy Plan, which mandated the procurement of 50 MW of new energy storage, is directly addressing the need for increased energy storage technologies within the province.

Green Build:

  • In an estimate by the Canadian Green Building Council's Toronto chapter, the Green Build market in Ontario encompassed approximately 38% of all ICI (industrial, commercial and institutional) construction activity for 2013, equal to approximately $5 billion.

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