LEGAL NOTICE OF TECHNICAL CONFERENCE INDIANA UTILITY REGULATORY COMMISSION CAUSE NO. 46322 VERIFIED JOINT PETITION OF NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC ("NIPSCO") AND NIPSCO GENERATION LLC ("GENCO") FOR (1) APPROVAL OF A SPECIAL CONTRACT ("DATA CENTER CUSTOMER #1 SPECIAL CONTRACT") PURSUANT TO IND. CODE §§ 8-1-2-24 AND 8-1-2-25; (2) APPROVAL OF A POWER PURCHASE AGREEMENT ("PPA") BETWEEN NIPSCO AND GENCO; (3) APPROVAL OF ALTERNATIVE REGULATORY PLANS PURSUANT TO IND. CODE §§ 8-1-2.5-5 AND 8-1-2.5- 6 FOR BOTH NIPSCO AND GENCO; AND (4) APPROVAL OF DEPRECIATION ACCRUAL RATES FOR GENERATION AND TRANSMISSION ASSETS TO BE CONSTRUCTED TO FULFILL THE OBLIGATIONS IN THE DATA CENTER CUSTOMER #1 SPECIAL CONTRACT AND PPA. Notice is hereby given that the Indiana Utility Regulatory Commission will conduct a public Technical Conference in the above-captioned Cause in Room 222 of the PNC Center, 101 W. Washington Street, Indianapolis, Indiana, commencing at 9:30 AM on December 5, 2025. This hearing is open to the public. If an accommodation is required to allow an individual with a disability to participate, please contact the Office of the Executive Secretary of the IURC at 317.232.2701 or TDD 317. 232.8556 at least 48 hours in advance. INDIANA UTILITY REGULATORY COMMISSION OFFICE OF THE EXECUTIVE SECRETARY 317.232.2701 BY:IURC-Loraine Seyfried, ALJ DATE: November 20, 2025 HSPAXLP Publication Dates LSBN0412314