0001081316-25-000022 Sample Contracts

SIERRA PACIFIC POWER COMPANY D/B/A NV ENERGY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee Indenture Dated as of September 8, 2025 Subordinated Debt Securities
Indenture • November 3rd, 2025 • Midamerican Energy Co • Electric services • New York

INDENTURE, dated as of September 8, 2025, between SIERRA PACIFIC POWER COMPANY D/B/A NV ENERGY, a corporation duly organized and existing under the laws of the State of Nevada (herein called the “Company”), having its principal office at 6100 Neal Road, Reno, Nevada 89511, and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., a national banking association duly organized and existing under the laws of the United States, as Trustee (herein called the “Trustee”).

SIERRA PACIFIC POWER COMPANY D/B/A NV ENERGY and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee FIRST SUPPLEMENTAL INDENTURE Dated as of September 8, 2025 to Indenture dated as of September 8, 2025 6.200% Fixed-to- Fixed Reset Rate Junior...
First Supplemental Indenture • November 3rd, 2025 • Midamerican Energy Co • Electric services • New York

THIS FIRST SUPPLEMENTAL INDENTURE, dated as of September 8, 2025 (the “First Supplemental Indenture”), is between Sierra Pacific Power Company d/b/a NV Energy, a Nevada corporation (the “Company”), and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”).