Oncor Electric Delivery Company's Transmission Contract Filing

Austin, TX: The Public Utility Commission of Texas has filed a regulatory document detailing the Second Amendment to the Standard Generation Interconnection Agreement between Oncor Electric Delivery Company LLC and Misae Solar IV, LLC (Leon Solar Park). The amended agreement, dated July 23, 2025, outlines changes to the interconnection details, including the number and size of generating units and the type of generating unit. The agreement also reflects any necessary changes made by the generator.

Key Takeaways:

• The Second Amendment to the Standard Generation Interconnection Agreement was filed by Oncor Electric Delivery Company LLC and Misae Solar IV, LLC (Leon Solar Park) on July 22, 2025.
• The amended agreement outlines changes to the Exhibit "C" Interconnection Details, including the deletion and replacement of sections 4 and 5.
• The number and size of generating units for the Leon Solar Park project is 55 inverters rated at 4.4 MVA each, totaling a gross capacity of 242 MVA and a net output of 210.1 MW measured at 34.5kV.
• The type of generating unit is Sungrow SG4400 UD-MV-US.
• The agreement amendments are aimed at reflecting changes made by the generator to the number and size of generating units and the manufacturer, model, or type of generating units.

Statistics:

• 55 inverters will be used at the Leon Solar Park project, each rated at 4.4 MVA.
• The gross capacity of the project is 242 MVA.
• The net output of the project will be 210.1 MW measured at 34.5kV.
• The generator terminal output will be 213.161 MW.

Sources:

• Public Utility Commission of Texas: [August 22,2025 Filing Clerk Public Utility Commission of Texas 1701 N. Congress Avenue P. O. Box 13326 Austin, TX 78711-3326]
• Oncor Electric Delivery Company LLC: [Docusign Envelope ID: F327D01 E-612 B-4336-BC52-02 E B B51 C 1 3AB]
• ERCOT Standard Generation Interconnection Agreement: [GIR 26INR0023 - Leon Solar Park]