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Clean Technology Funding in Ontario: Top Grants and Programs for Businesses

Ontario is one of Canada’s leading provinces for clean technology innovation and adoption. Home to a large base of manufacturers, tech companies, and innovative startups, Ontario has a strong interest in reducing emissions while growing the economy. For business owners and decision-makers in Ontario, there are many funding programs available to support clean tech initiatives – from installing energy-saving equipment in a factory to launching a new cleantech venture. Both the federal and Ontario governments offer grants, loans, and tax credits to help companies invest in sustainable technologies, improve energy efficiency, and adopt low-carbon solutions. Below, we outline key federal and provincial clean tech funding options tailored for Ontario businesses.

506 programs
  • Independent Electricity System Operator (IESO) logo
    Grant and FundingOpen

    XLerate Program

    Pay-for-performance funding for large-scale Ontario energy-efficiency projects
    Eligible Funding
    • Maximum amount : 15,000,000 $
    • Up to 75% of project cost
    Eligible Industries
    • Manufacturing
    • Health care and social assistance
    • Public administration
    Types of eligible projects
    TechnologyEnvironment and Climate
    Ontario, Canada
  • Get grants for environmental in Ontario for your business

    Tell us about your business and project so we can identify relevant funding programs and practical next steps.

  • Elevate Talent logo
    Other SupportPartnering and CollaborationGrant and FundingExpert AdviceOpen

    Canada’s Next Sustainable Changemaker Challenge

    Supports startups reducing greenhouse gas emissions
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Utilities
    • Construction
    • Real estate and rental and leasing
    • Professional, scientific and technical services
    Types of eligible projects
    TechnologyEnvironment and ClimateInnovation
    Toronto, Ontario, Canada
  • Save on Energy (SOE) logo
    Grant and FundingOpen

    CoolSaver Program

    Free home cooling tune-ups and discounts for eligible residents
    Eligible Funding
    • Maximum amount : 1,000 $
    Eligible Industries
    • Utilities
    • Construction
    Types of eligible projects
    Environment and Climate
    Ontario, Canada
  • Platform

    Discovery at scale.

    Filter thousands of active funding opportunities with granular precision. Our explorer instantly matches your company profile with regional and national credits.
  • Coralus logo
    Other SupportPartnering and CollaborationLoans and Capital investmentsOpen

    Ventures at Coralus

    Community capital for impact-driven ventures
    Eligible Funding
    • Up to 45% of project cost
    Eligible Industries
    • Manufacturing
    • Health care and social assistance
    • Arts, entertainment and recreation
    • Other services (except public administration)
    Types of eligible projects
    Environment and ClimateInnovation
    Ontario, Canada
  • Turn funding opportunities for environmental in Ontario into strong applications

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  • Agriculture and Agri-Food Canada (AAFC) logo
    Grant and FundingOpen

    Agricultural Climate Solutions

    Support for climate-smart agricultural practices
    Eligible Funding
    • Maximum amount : 10,000,000 $
    Eligible Industries
    • Agriculture, forestry, fishing and hunting
    Types of eligible projects
    TechnologyEnvironment and ClimateInnovation
    Manitoba, Ontario, PE, Quebec, Canada
  • Town of Ajax logo
    Grant and FundingOpen

    Ajax Mature Tree Conservation Program

    Rebates for mature tree maintenance in Ajax
    Eligible Funding
    • Maximum amount : 1,000 $
    • Up to 25% of project cost
    Eligible Industries
    • Public administration
    Types of eligible projects
    Environment and Climate
    Ajax, Ontario, Canada
  • Avnet, Inc. logo
    Grant and FundingOpen

    Avnet Cares

    Small community funding for STEM and local needs
    Eligible Funding
    • From $1,000 to $10,000
    Types of eligible projects
    TechnologyEnvironment and Climate
    Timeline
    • Closing date : September 10, 2026
    Toronto, Ontario, Canada
  • Platform

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  • City of Ottawa logo
    Loans and Capital investmentsOpen

    Better Homes Ottawa

    Offers low-interest, long-term loans for energy-efficient home upgrades
    Eligible Funding
    • From $10,000 to $125,000
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and Climate
    Ottawa, Ontario, Canada
  • City of Port Colborne logo
    Grant and FundingTax CreditsOpen

    City of Port Colborne - Community Improvement Incentives

    Incentives for redevelopment and building improvement
    Eligible Funding
    • Maximum amount : 75,000 $
    • Up to 50% of project cost
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Timeline
    • Closing date : August 12, 2026
    Port Colborne, Ontario, Canada
  • City of Waterloo logo
    Grant and FundingTax CreditsOpen

    City of Waterloo Community Improvement Plan (CIP)

    Tax credits for downtown Waterloo property improvements
    Eligible Funding
    • Maximum amount : 25,000 $
    • Up to 50% of project cost
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Timeline
    • Open Date : May 1, 2026
    • Closing date : October 31, 2026
    Waterloo, Ontario, Canada
  • Need help applying for grants for environmental in Ontario?

    Get guidance to assess program fit, required documents, and the steps involved in applying.

  • Lake of Bays Township logo
    Grant and FundingOpen

    Community Improvement Plan (CIP) — Public Art

    Supports private sector public art improvements
    Eligible Funding
    • Maximum amount : 5,000 $
    • Up to 50% of project cost
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Ontario, Canada
  • Platform

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  • Lake of Bays Township logo
    Grant and FundingLoans and Capital investmentsOpen

    Community Improvement Plan (CIP) Private Sector Incentive Program

    Funding for private property improvements and redevelopment
    Eligible Funding
    • Maximum amount : 10,000 $
    • Up to 50% of project cost
    Types of eligible projects
    CommercializationEnvironment and ClimateConstruction and Renovation Digital Transformation
    Timeline
    • Open Date : July 1, 2026
    • Closing date : September 30, 2026
    Ontario, Canada
  • Loyalist Township logo
    Grant and FundingOpen

    Community Tree Initiative

    Reduced-cost native trees for Loyalist residents
    Eligible Funding
    • Varies by project
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : March 25, 2026
    Ontario, Canada
  • London Community Foundation (LCF) logo
    Partnering and CollaborationGrant and FundingOpen

    Community Vitality Grant

    Funding for collaborative community impact projects
    Eligible Funding
    • From $50,000 to $350,000
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and ClimateConstruction and Renovation Innovation
    Ontario, Canada
  • City of Toronto logo
    Loans and Capital investmentsOpen

    Energy Retrofit Loans (ERL)

    Low-interest financing for energy-efficient building retrofits in Toronto
    Eligible Funding
    • Up to 100% of project cost
    Eligible Industries
    • Manufacturing
    • Retail trade
    • Real estate and rental and leasing
    • Professional, scientific and technical services
    Types of eligible projects
    TechnologyEnvironment and Climate
    Toronto, Ontario, Canada
  • Find funding programs for environmental in Ontario that fit your project

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  • Bruce Power logo
    Grant and FundingOpen

    Environment and Sustainability Fund

    Support for local environmental and sustainability initiatives
    Eligible Funding
    • Varies by project
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and Climate
    Ontario, Canada
  • Elgin-St. Thomas Community Foundation (ESCF) logo
    Grant and FundingOpen

    Evans Tree Grants

    Tree planting support in Elgin County and St. Thomas
    Eligible Funding
    • Varies by project
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : February 15, 2026
    • Closing date : October 31, 2026
    Ontario, Canada
  • Township of Terrace Bay logo
    Other SupportPartnering and CollaborationGrant and FundingOpen

    FoodCycler Food Waste Diversion

    Subsidized home food waste diversion pilot
    Eligible Funding
    • Varies by project
    Types of eligible projects
    Environment and ClimateInnovation
    Timeline
    • Open Date : May 1, 2025
    Terrace Bay, Ontario, Canada
  • Government of Ontario logo
    Grant and FundingOpen

    Forest Biomass Program — Modernization stream

    Modernizes Ontario's forest sector using underutilized biomass resources
    Eligible Funding
    • Maximum amount : 10,000,000 $
    • Up to 35% of project cost
    Types of eligible projects
    Environment and ClimateInnovation
    Timeline
    • Open Date : June 1, 2026
    • Closing date : December 1, 2026
    Ontario, Canada
  • Platform

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  • Get grants for environmental in Ontario for your business

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  • City of Ottawa logo
    Grant and FundingOpen

    High Volume User Program

    Provides rebates for installing water-efficient commercial fixtures and appliances
    Eligible Funding
    • Maximum amount : 10,000 $
    Eligible Industries
    • Real estate and rental and leasing
    Types of eligible projects
    Environment and Climate
    Ottawa, Ontario, Canada
  • Laidlaw Foundation (LF) logo
    Grant and FundingOpen

    Indigenous Strategy

    Support for Indigenous youth-led initiatives
    Eligible Funding
    • Maximum amount : 60,000 $
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and Climate
    Ontario, Canada
  • Government of Ontario logo
    Grant and FundingOpen

    Northern Energy Advantage Program (NEAP)

    Rebates for Northern Ontario industrial electricity consumers
    Eligible Funding
    • Varies by project
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : April 1, 2022
    • Closing date : March 31, 2027
    Sudbury, Ontario, Canada
  • Platform

    Discovery at scale.

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  • National Research Council Canada (NRC) logo
    Other SupportResearchers And FacilitiesPartnering and CollaborationExpert AdviceOpen

    NRC — Canadian Centre for Housing Technology

    Real-life testing support for housing innovations
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Utilities
    • Construction
    • Manufacturing
    • Professional, scientific and technical services
    Types of eligible projects
    CommercializationTechnologyEnvironment and ClimateConstruction and Renovation Innovation
    Ottawa, Ontario, Canada
  • National Research Council Canada (NRC) logo
    Researchers And FacilitiesOpen

    NRC — Climatic testing facility

    Extreme-weather testing for vehicles and components
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Manufacturing
    • Transportation and warehousing
    • Professional, scientific and technical services
    • Public administration
    Types of eligible projects
    Environment and Climate
    Ottawa, Ontario, Canada
  • National Research Council Canada (NRC) logo
    Researchers And FacilitiesPartnering and CollaborationOpen

    NRC — Large Wave Flume - Research Facility

    Large-scale coastal testing facility
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Construction
    • Manufacturing
    • Transportation and warehousing
    • Professional, scientific and technical services
    Types of eligible projects
    Environment and ClimateConstruction and Renovation Innovation
    Ottawa, Ontario, Canada
  • Turn funding opportunities for environmental in Ontario into strong applications

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  • National Research Council Canada (NRC) logo
    Researchers And FacilitiesOpen

    NRC — Research Aircraft Fleet

    Specialized aircraft for aeronautical testing and research
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Transportation and warehousing
    • Professional, scientific and technical services
    Types of eligible projects
    CommercializationTechnologyEnvironment and ClimateInnovation
    Ottawa, Ontario, Canada
  • Government of Ontario logo
    Expert AdviceOpen

    Ontario Export Services

    Export support for Ontario companies
    Eligible Funding
    • Varies by project
    Eligible Industries
    • All industries
    Types of eligible projects
    CommercializationArtificial Intelligence (AI)TechnologyEnvironment and ClimateInnovationDigital Transformation
    Ontario, Canada
  • Government of Ontario logo
    Grant and FundingOpen

    Ontario Forest Biomass Program

    Funding for Ontario forest biomass projects
    Eligible Funding
    • Maximum amount : 10,000,000 $
    • Up to 80% of project cost
    Types of eligible projects
    CommercializationTechnologyEnvironment and ClimateConstruction and Renovation Innovation
    Timeline
    • Closing date : October 15, 2026
    Ontario, Canada
  • Platform

    Your AI grant expert.

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  • Perth County logo
    Other SupportPartnering and CollaborationGrant and FundingExpert AdviceOpen

    Perth County Stewardship Program

    Funding for stewardship and tree planting projects
    Eligible Funding
    • From $1,000 to $10,000
    • Up to 100% of project cost
    Types of eligible projects
    Environment and Climate
    Timeline
    • Closing date : November 25, 2026
    Ontario, Canada
  • Need help applying for grants for environmental in Ontario?

    Get guidance to assess program fit, required documents, and the steps involved in applying.

  • City of Toronto logo
    Grant and FundingOpen

    PollinateTO Community Grants

    Toronto pollinator habitat funding for community groups
    Eligible Funding
    • Maximum amount : 5,000 $
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and Climate
    Toronto, Ontario, Canada
  • City of Port Colborne logo
    Grant and FundingTax CreditsOpen

    Port Colborne Environmental Site Assessment Grant Program

    Funding for environmental site assessments on brownfield properties
    Eligible Funding
    • Maximum amount : 30,000 $
    • Up to 50% of project cost
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Timeline
    • Closing date : August 12, 2026
    Ontario, Canada
  • City of Ottawa logo
    Grant and FundingOpen

    Rain Ready Ottawa

    Supports Ottawa residents with sustainable rainwater management solutions
    Eligible Funding
    • Maximum amount : 5,000 $
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and Climate
    Ottawa, Ontario, Canada
  • Trillium Mutual Insurance Company logo
    Grant and FundingOpen

    ROOTS Community Fund

    Support for rural Ontario community initiatives
    Eligible Funding
    • Varies by project
    Types of eligible projects
    Environment and Climate
    Timeline
    • Closing date : August 28, 2026
    Ontario, Canada
  • Platform

    Never miss an opportunity.

    Funding cycles open and close within days. Our real-time engine monitors policy changes and alerts you as soon as a new matching opportunity appears.
  • Town of LaSalle logo
    Other SupportOpen

    Spay and Neuter Voucher Program

    Cat sterilization support for LaSalle residents
    Eligible Funding
    • Maximum amount : 250 $
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : August 4, 2026
    LaSalle, Ontario, Canada
  • City of Toronto logo
    Expert AdviceOpen

    STEP Program

    No-cost support for multi-residential buildings
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Real estate and rental and leasing
    Types of eligible projects
    Environment and Climate
    Toronto, Ontario, Canada
  • Find funding programs for environmental in Ontario that fit your project

    Share your project context to review funding options that may match your goals.

  • City of Toronto logo
    Grant and FundingOpen

    Toronto — Capacity Buyback Program

    Rewards businesses for implementing permanent water-saving measures
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Manufacturing
    • Wholesale trade
    • Retail trade
    • Educational services
    Types of eligible projects
    Environment and Climate
    Toronto, Ontario, Canada
  • City of Toronto logo
    Other SupportGrant and FundingOpen

    Toronto Eco-Roof Incentive Program

    Incentives for Toronto eco-roof installations
    Eligible Funding
    • Maximum amount : 100,000 $
    Eligible Industries
    • All industries
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Toronto, Ontario, Canada
  • Platform

    Data-driven strategy.

    Leverage historical data to predict your likelihood of success. See how you compare against industry benchmarks and optimize your capital structure.
  • Oxford County logo
    Grant and FundingOpen

    Water Efficiency Rebate Program

    Rebates for water-saving home upgrades
    Eligible Funding
    • From $50 to $100
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : January 1, 2016
    Ontario, Canada
  • City of Waterloo logo
    Grant and FundingTax CreditsOpen

    Waterloo Fee and Study Grant

    Supports Uptown improvement fees and studies
    Eligible Funding
    • Maximum amount : 25,000 $
    • Up to 50% of project cost
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Timeline
    • Open Date : May 1, 2026
    • Closing date : October 31, 2026
    Waterloo, Ontario, Canada
  • City of Waterloo logo
    Grant and FundingOpen

    Waterloo Sustainability and Climate Resilience Grant

    Supports projects in the Uptown CIP area
    Eligible Funding
    • Maximum amount : 10,000 $
    • Up to 50% of project cost
    Types of eligible projects
    Environment and Climate
    Timeline
    • Open Date : May 1, 2026
    • Closing date : October 31, 2026
    Waterloo, Ontario, Canada
  • City of Toronto logo
    Grant and FundingOpenClosing Soon

    Community Planting and Stewardship Grant

    Supports tree planting and stewardship on private Toronto land
    Eligible Funding
    • From $5,000 to $100,000
    • Up to 50% of project cost
    Types of eligible projects
    Environment and Climate
    Timeline
    • Closing date : August 13, 2026
    Toronto, Ontario, Canada
  • Get grants for environmental in Ontario for your business

    Tell us about your business and project so we can identify relevant funding programs and practical next steps.

  • Canadian Food Innovation Network (CFIN) logo
    Other SupportPartnering and CollaborationExpert AdviceClosed

    CFIN — Unpuzzling: Foodtech Ontario

    Mentorship program accelerating early-stage foodtech companies in Ontario
    Eligible Funding
    • Varies by project
    Types of eligible projects
    CommercializationTechnologyEnvironment and ClimateInnovationDigital Transformation
    Timeline
    • Open Date : February 2, 2026
    • Closing date : March 13, 2026
    Ontario, Canada
  • Platform

    Discovery at scale.

    Filter thousands of active funding opportunities with granular precision. Our explorer instantly matches your company profile with regional and national credits.
  • City of Kingston logo
    Grant and FundingTax CreditsClosed

    2017 Brownfields Community Improvement Plan (CIP)

    Supports brownfield site rehabilitation in Kingston
    Eligible Funding
    • Maximum amount : 3,000,000 $
    • Up to 100% of project cost
    Eligible Industries
    • Construction
    • Manufacturing
    • Wholesale trade
    • Retail trade
    Types of eligible projects
    Environment and ClimateConstruction and Renovation
    Kingston, Ontario, Canada
  • City of Pembroke logo
    Other SupportClosed

    2025 City of Pembroke Private Property Tree Planting Incentive Program

    Tree planting rebate for Pembroke property owners
    Eligible Funding
    • Maximum amount : 150 $
    • Up to 50% of project cost
    Eligible Industries
    • Manufacturing
    • Retail trade
    • Real estate and rental and leasing
    • Other services (except public administration)
    Types of eligible projects
    Environment and Climate
    Pembroke, Ontario, Canada
  • Township of Selwyn logo
    Other SupportClosed

    2025 ReLeaf Program

    Tree planting support for local residents
    Eligible Funding
    • Varies by project
    Eligible Industries
    • Public administration
    Types of eligible projects
    Environment and Climate
    Ontario, Canada
  • Turn funding opportunities for environmental in Ontario into strong applications

    Build a clearer funding plan and prepare stronger applications with guidance from our funding team.