| 74 | Electric Service Companies | Albany | http://ie90928ca/Learn/Ontario%20Power%20System/Overview%20of%20Sector%20Roles/Find%20Your%20LDC |
| 62 | Financial Planners | New Liskeard | https://ie90928ca/en/Power-Data/Supply-Overview |
| 75 | Financial Planners | Fort Frances | https://ie90928ca/en/Power-Data/Supply-Overview |
| 73 | Financial Planners | Kincardine | https://ie90928ca/en/Power-Data/Supply-Overview |
| 93 | Construction | Atikokan | http://ie90928ca/en/Get-Involved/Regional-Planning/Northwest-Ontario/bulk-planning |
| 52 | Solar | East York | http://ie90928ca/-/media/Files/IESO/Document-Library/FIT/archive/FIT4-Offer-List.pdf?la=en |
| 20 | Water Utility Company | Toronto | http://ie90928ca/en/Learn/Ontario-Power-System/Overview-of-Sector-Roles/Find-Your-LDC |
| 44 | Power Station | Ottawa | http://ie90928ca/-/media/Files/IESO/Document-Library/engage/ottawa/Ottawa-Sub-Region-IRRP-20200304.pdf?la=en |
| 51 | Energy | Ta'if | https://ie90928ca/ |
| 58 | Water Utility Company | Ottawa | http://ie90928ca/en/Learn/Ontario-Power-System/Overview-of-Sector-Roles/Find-Your-LDC |
| 78 | Water Treatment Equipment | Toronto | http://ie90928ca/-/media/Files/IESO/Document-Library/conservation-reports/Water-Wastewater-Treatment-and-Pumping-Report.pdf?la=en |
| 90 | Accountants | Innisfil | https://ie90928ca/-/media/Files/IESO/Document-Library/regional-planning/Barrie-Innisfil/Barrie-Innisfil-IRRP-Appendices.pdf?la=en |
| 58 | Freedom 55 | Napanee | http://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.xlsx |
| 31 | Freedom 55 | Huron East | http://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.xlsx |
| 82 | Elevator Contractors | Chatham | http://ie90928ca/en/sector-participants/conservation-delivery-and-tools/conservation-e-blasts/2018/02/registration-now-open-for-contractor-sales-training-in-chatham-kingston-and-ajax |
| 46 | Social Work | Innisfil | http://ie90928ca/barrie-innisfil |
| 12 | Electric Utilities | Ottawa | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 8 | Power Utilities | Ottawa | https://ie90928ca/Learn/Ontario-Power-System/Overview-of-Sector-Roles/Find-Your-LDC |
| 27 | Chief Financial Officer | Ontario, CA | https://ie90928ca/en/Corporate-IESO/Leadership/Executive-Team/Barbara-Anderson |
| 89 | Collections Agencies | Thunder Bay | https://ie90928ca/west-of-thunder-bay |
| 98 | Hub Operator | Vancouver | https://ie90928ca/ |
| 43 | Managed Service Providers | Ottawa | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 59 | Managed Service Providers | Mississauga | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 22 | Managed Service Providers | Oshawa | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 12 | Managed Service Providers | Thunder Bay | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 20 | Managed Service Providers | Peterborough | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 62 | Managed Service Providers | Sault Ste. Marie | https://ie90928ca/en/Sector-Participants/Meter-Registration/Metering-Service-Providers |
| 72 | Solar | Cobourg | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 36 | Closet Suppliers | Smiths Falls | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 44 | Financial Planner | Sioux Lookout | https://ie90928ca/-/media/Files/IESO/Document-Library/regional-planning/Northwest-Ontario/NW-Ontario-Scoping-Assessment-Municipality-Sioux-Lookout-20201224.ashx |
| 96 | Electric utility company | Aurora | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 77 | Solar Panels For Home | Ontario, CA | https://ie90928ca/en/Get-Involved/microfit/buyer |
| 21 | Financial Planner | Kingfisher First Nation | https://ie90928ca/-/media/Files/IESO/Document-Library/regional-planning/North-of-Dryden/App-1-1-2-2012-Draft-Remote-Community-Connection-Plan.ashx |
| 71 | Residential Solar | Ontario, CA | https://ie90928ca/en/Get-Involved/microfit/buyer |
| 44 | Lead Generation | Sault Ste. Marie | https://ie90928ca/-/media/Files/IESO/Document-Library/engage/els/els-20210211-webinar.ashx |
| 79 | Power | Oakville | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 7 | Power | North York | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 18 | Power | Richmond Hill | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 29 | Engagement Party Planner | Hamilton | https://ie90928ca/en/Sector-Participants/Engagement-Initiatives/Engagements/Completed/Integrated-Regional-Resource-Plan-Hamilton-Sub-Region |
| 35 | Electricity | Ontario, CA | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 76 | Ceo | Oakville | https://ie90928ca/en/Sector-Participants/IESO-News/2021/02/Lesley-Gallinger-appointed-IESO-President-and-CEO |
| 75 | Electricians | Innisfil | https://ie90928ca/-/media/Files/IESO/Document-Library/regional-planning/South-Georgina-Bay-Muskoka/SGBM-Barrie-Innisfil-IRRP.ashx |
| 21 | Electric | Ontario, OR | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 65 | Solar | Whitecourt | https://ie90928ca/-/media/Files/IESO/Document-Library/engage/rpr/rprag-20200327-cansia.ashx |
| 44 | Solar | Drumheller | http://ie90928ca/-/media/Files/IESO/Document-Library/engage/esag/esag-20200610-canwea-cansia.pdf?la=en |
| 63 | Solar Energy | Thunder Bay | https://ie90928ca/-/media/Files/IESO/Document-Library/planning-forecasts/apo/APO-Ontario-Generation-Resources-Database.ashx |
| 31 | Camping Site | Casselman-Steele Heights | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 84 | Local Services | Milton | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 68 | Local Services | Brampton | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 4 | Energy Companies | Ontario, CA | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 56 | Electrical Supply | Québec | https://ie90928ca/en/Power-Data/Supply-Overview/Imports-and-Exports |
| 52 | Electrical Supply | Kitchener | https://ie90928ca/en/Sector-Participants/Engagement-Initiatives/Engagements/Integrated-Regional-Resource-Plan-Kitchener-Waterloo-Cambridge-Guelph |
| 65 | Electrical Supply | Oakville | https://ie90928ca/ |
| 87 | Electrical Supply | Kingston | https://ie90928ca/-/media/Files/IESO/Document-Library/regional-planning/Peterborough-to-Kingston/Peterborough-Kingston-Scoping-Assessment-Outcome-Report.ashx |
| 61 | Electrical Supply | St. Catharines | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 70 | Electrical Supply | Sudbury | https://ie90928ca/en/Get-Involved/Regional-Planning/Northeast-Ontario/Sudbury-Algoma |
| 80 | Electrical Supply | Niagara Falls | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 79 | Electrical Supply | Brantford | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 26 | Electrical Supply | East York | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 67 | Electrical Supply | Newmarket | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 58 | Electrical Supply | Chatham | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 62 | Electrical Supply | North Bay | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 45 | Electrical Supply | Sault Ste. Marie | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 52 | Electrical Supply | Whitby | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 98 | Electrical Supply | Belleville | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 42 | Electrical Supply | Cochrane | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 31 | Electrical Supply | Welland | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 52 | Electrical Supply | Orangeville | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 17 | Truck Parts Supplier | Vila Nova de Santo André | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 69 | Solar | Port Perry | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 70 | Marketing Agencies | Smiths Falls | https://ie90928ca/en/Sector-Participants/Registered-Participants |
| 25 | Oil Company | Oshawa | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 52 | Oil Company | Barrie | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 85 | Oil Company | Thunder Bay | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 83 | Oil Company | North Bay | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 92 | Oil Company | Saint-Thomas | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 9 | Oil Company | Stouffville | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 45 | Oil Company | Orangeville | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 29 | Oil Company | Orillia | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 85 | Companies | Vaughan | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 29 | Auditing | Ontario, CA | https://ie90928ca/en/Sector-Participants/Market-Oversight/Enabling-Compliance/Reliability-Standards-Auditing |
| 3 | Electric Utility Company | Mississauga | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 79 | Electrical Wholesaler | Mississauga | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 37 | Electric Distributor | Belmont, CA | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 50 | Electric Distributors | Ontario, CA | https://ie90928ca/en/Learn/Ontario-Power-System/Electricity-Market-Today |
| 80 | Electric Distributors | Richmond, CA | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 11 | Electric Distributors | Ontario, OR | https://ie90928ca/learn/ontario-power-system/overview-of-sector-roles/find-your-ldc |
| 87 | Refurbishment | Darlington | https://ie90928ca/en/Corporate-IESO/Media/News-Releases/2016/01/Ont-Moving-Forward-with-Nuclear-Refurb-at-Darl-and-Pursuing-Continued-Ops-at-Pickering-to-2024 |
| 33 | Cannabis Growers | South Hadley, MA | https://ie90928ca/-/media/Files/SaveOnEnergy/Industry/IESO-Cannabis-Report.ashx |
| 29 | Solar Installation | Casselman-Steele Heights | https://ie90928ca/-/media/Files/IESO/Document-Library/power-data/supply/IESO-Active-Contracted-Generation-List.ashx |
| 33 | Realtors | Kitchenuhmaykoosib Inninuwug First Nation | https://ie90928ca/-/media/Files/IESO/Document-Library/Backgrounders/backgrounder-ESP-funding-recipients-2020.ashx |
| 68 | Zero Carbon | Ontario, CA | https://ie90928ca |
| 77 | Party Planners | Thunder Bay | https://ie90928ca |
| 75 | Solar | Elmira | https://ie90928ca |
| 13 | Closet Suppliers | Argentia Beach | https://ie90928ca |
| 90 | Estate Planners | Argentia Beach | https://ie90928ca |
| 23 | Solar Installation | Argentia Beach | https://ie90928ca |
| 51 | Energy | Lakeshore, LA | https://ie90928ca |
| 34 | Hydro Power Companies | Brussels | https://ie90928ca |
