Conditions of Service

Toronto Hydro's Conditions of Service and five reference documents are changing. The proposed implementation date is January 1, 2025. We've outlined the proposed changes in the following documents.

Proposed main document

• Proposed Conditions of Service (PDF, 1.7 MB)
• Summary of Proposed Revisions (PDF, 186 KB)

Proposed reference documents

• Reference 4. Requirements for the Design and Construction of Customer-Owned High Voltage Substations (PDF, 3 MB)
• Reference 5a. Requirements for the Design and Construction of Customer-Owned Structures (PDF, 318 KB)
• Reference 5b. Construction Standards referenced in Requirements for the Design and Construction of Customer-Owned Structures (PDF, 32.7 MB)
• Reference 6. Metering Requirements 750 Volts or Less (PDF, 1.9 MB)
• Reference 8. Metering Services and Charges (PDF, 492 KB)

The proposed main document and proposed reference documents are currently in draft form. Customers can review the proposed changes and submit comments until December 20, 2024. Customers can submit comments using the contact information at the end of this page.

View or download our Conditions of Service

Conditions of Service - Main Document (PDF, 1.6 MB)

Additional documents

Revision summary

The Conditions of Service - Revision #23 Summary (PDF, 149 KB) highlights the latest revisions made to the Conditions of Service document.

Reference documents

The Conditions of Service reference documents provide further background information:

• Reference 1. Economic Evaluation Model for Distribution System Expansion (PDF, 104 KB)
• Reference 2. Standard Connection Agreements - Terms of Conditions (PDF, 70 KB)
• Reference 3. Distributed Energy Resource Requirements (PDF, 16.3 MB)
• Reference 4. Requirements for the Design and Construction of Customer-Owned High Voltage Substations (PDF, 2.9 MB)
• Reference 5a. Requirements for the Design and Construction of Customer-Owned Structures (PDF, 2.9 MB)
• Reference 5b. Construction Standards referenced in Requirements for the Design and Construction of Customer-Owned Structures (PDF, 6.6 MB)
• Reference 6. Metering Requirements 750 Volts or Less (PDF, 1.3 MB)
• Reference 7. Metering Requirements for 13.8kV and 27.6kV Customer-Owned Substations (PDF, 1,000 KB)
• Reference 8. Metering Services and Charges (PDF, 397 KB)
• Reference 9. Electric Vehicle Charging Connection Requirements for Toronto Hydro Customers (PDF, 147 KB)

Please note: Our Conditions of Service are subject to change. They are regulated by the Ontario Energy Board, and Toronto Hydro will submit any changes to the Ontario Energy Board.

Questions or comments?

Feedback regarding the latest revisions to our Conditions of Service can be emailed to conditionsofservice@torontohydro.com or mailed to: