LEGAL NOTICE OF EVIDENTIARY HEARING INDIANA UTILITY REGULATORY COMMISSION CAUSE NO. 46393 VERIFIED JOINT PETITION OF NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC (“NIPSCO”) AND NIPSCO GENERATION LLC (“GENCO”) FOR APPROVAL OF (1) A CUSTOMER‐SPECIFIC CONTRACT BETWEEN NIPSCO AND DATA CENTER CUSTOMER #2 PURSUANT TO IND. CODE §§ 8‐1‐2‐24 AND 8‐1‐2‐25; (2) A POWER PURCHASE AGREEMENT BETWEEN NIPSCO AND GENCO; AND (3) ALTERNATIVE REGULATORY PLANS FOR BOTH NIPSCO AND GENCO PURSUANT TO IND. CODE §§ 8‐1‐2.5‐5 AND 8‐1‐2.5‐6. LEGAL NOTICE OF EVIDENTIARY HEARING INDIANA UTILITY REGULATORY COMMISSION CAUSE NO. 46393 VERIFIED JOINT PETITION OF NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC (“NIPSCO”) AND NIPSCO GENERATION LLC (“GENCO”) FOR APPROVAL OF (1) A CUSTOMER‐SPECIFIC CONTRACT BETWEEN NIPSCO AND DATA CENTER CUSTOMER #2 PURSUANT TO IND. CODE §§ 8‐1‐2‐24 AND 8‐1‐2‐25; (2) A POWER PURCHASE AGREEMENT BETWEEN NIPSCO AND GENCO; AND (3) ALTERNATIVE REGULATORY PLANS FOR BOTH NIPSCO AND GENCO PURSUANT TO IND. CODE §§ 8‐1‐2.5‐5 AND 8‐1‐2.5‐6. Notice is hereby given that the Indiana Utility Regulatory Commission will conduct a public Evidentiary Hearing in the above-captioned Cause in Room 222 of the PNC Center, 101 W. Washington Street, Indianapolis, Indiana, commencing at 9:30 AM on June 26, 2026. 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 – Steve Henke, ALJ DATE: May 28, 2026 6/1/2026 82234 ​