Technical Interconnection Requirements (TIR) Updates

May 15, 2023: Revisions to Section 2.3.13. See Bulletin 5 for details.
April 30, 2021: Revisions to Section 2.3.5, Section 2.3.6, Section 2.3.10 and Section 2.3.11. See Bulletin 4 for details.
June 24, 2019: Revisions to Section 1.6 and Section 1.6.1. See Bulletin 3 for details.
April 15, 2013: Distributed Generation Technical Interconnection Requirements Interconnections at Voltages 50kV and Below Rev 3, was released.
January 14, 2016: Revisions to Section 2.3.12. See Bulletin 1 and Bulletin 2 for details.

Learn more about Distribution-connected Generators and the Feed-in Tariff (FIT) program.

Important information about your generation connection and transformer sizing

Please review the Technical Interconnection Requirements (TIR) – Micro Generation & Small Generation, 3-phase, less than 30 kW and Generation Transformer Guide. You may incur additional costs for your connection according to your existing transformer size and the amount of generation you propose to install. For more information, please refer to the TIR or contact us.

Distributed Energy Resources TIR

Micro-Embedded Generation TIR

Contact Us

For more information please contact our Distributed Connections Group at:

DxGenerationConnections@HydroOne.com

Or call us at:

Technical Interconnection Requirements (TIR) Updates

Learn more about Distribution-connected Generators and the Feed-in Tariff (FIT) program.

Important information about your generation connection and transformer sizing

Contact Us

1-877-447-4412