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Public utilities

Oncor Electric Delivery Company's Transmission Contract Filing with the Public Utility Commission of Texas

Strategic Insights

— 2 min read

On June 13, 2025, the Public Utility Commission of Texas filed a document related to Oncor Electric Delivery Company's transmission contract filing, specifically regarding the Blarney Solar Project LLC generation interconnection agreement. This agreement was first signed on April 22, 2024, and has undergone several amendments. The latest amendment, dated May 29, 2025, aims to revise several key aspects of the agreement, including references, time schedules, and interconnection details.

Key Takeaways:

  • The Blarney Solar Project LLC generation interconnection agreement is a critical component of the Oncor Electric Delivery Company's transmission contract filing with the Public Utility Commission of Texas.
  • The agreement has undergone several amendments since its initial signing on April 22, 2024, with the latest amendment dated May 29, 2025.
  • Amendment No. 1 revises several key aspects of the agreement, including:

* Replacing references to Sligsol, LLC with Blarney Solar Project LLC

* Deleting and replacing Exhibit "B" Time Schedule with an updated version

* Deleting and replacing Paragraphs 8 and 12(p) of Exhibit "C" Interconnection Details with updated versions

* Deleting and replacing Exhibit "IE" Security Arrangement Details with an updated version

  • The revised agreement also specifies new dates for various milestones, including the In-Service Date, Scheduled Trial Operation Date, and Scheduled Commercial Operation Date.
  • The Blarney Solar Project LLC is a critical component of the Oncor Electric Delivery Company's transmission contract filing with the Public Utility Commission of Texas.

Statistics:

  • The Blarney Solar Project LLC generation interconnection agreement was first signed on April 22, 2024.
  • Amendment No. 1 to the agreement was dated May 29, 2025.
  • The revised agreement specifies the following new dates:

* In-Service Date: April 15, 2027

* Scheduled Trial Operation Date: May 15, 2027

* Scheduled Commercial Operation Date: July 1, 2027

* Date by which TSP will submit the Metering Design Proposal to ERCOT: October 15, 2026

* Date by which Generator will provide information required for sizing the EPS Metering CT's: January 15, 2026

  • The revised agreement also specifies new deadlines for various milestones, including:

* Generator to provide notice to proceed with design and procurement and provide security: May 30, 2025

* Generator to provide notice to commence construction and provide security: April 15, 2026

* TSP to provide preliminary survey exhibits for the deeds/easements/rights of way: August 31, 2025

* TSP to provide final survey exhibits for the deeds/easements/rights of way: September 15, 2025

Sources:

  • Public Utility Commission of Texas, Filed Document, Control Number: 35077, Item Number: 2152 (June 13, 2025)
  • Oncor Electric Delivery Company, ERCOT Standard Generation Interconnection Agreement GIR 24INR0326, Amendment No. 1 (May 29, 2025)

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