Company: EAI
Filing Date: 2025-08-06
Form Type: S-3ASR
Source: 0001193125-25-174487
Chunk: 121

Company: ENTERGY ARKANSAS, LLC
Filing Date: 2025-08-06
Form: S-3ASR
Chunk 121
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 respect to the offering of the New Bonds will be passed upon for the underwriters by Pillsbury Winthrop Shaw Pittman LLP, New York, New York. Pillsbury Winthrop Shaw Pittman LLP from time to time represents us and certain of our
affiliates in connection with various matters.

16

PROSPECTUS PREFERRED MEMBERSHIP INTERESTS ENTERGY LOUISIANA, LLC 4809 Jefferson Highway Jefferson, Louisiana 70121 Telephone (504) 576-4000 We -

| • |     | may periodically offer our preferred membership interests in one or more series; and |

| • |     | will determine the specific number of preferred membership interests, liquidation value, offering price,                                                                                                                                               
 distribution rate (or method of calculation thereof), whether the series will be listed on a national securities exchange, and other terms of each series of preferred membership interests when sold, including whether any series will be subject to 
 redemption or sinking fund provisions.                                                                                                                                                                                                                 |

This prospectus may be used to offer and sell series of preferred membership interests only if accompanied by the prospectus supplements for those series. We will provide the specific information for those offerings and the specific terms of those preferred membership interests, including their offering price and distribution rate, in supplements to this prospectus. The supplements may also add, update or change the information in this prospectus. You should read this prospectus and any supplements carefully before you invest. Investing in the preferred membership interests offered by this prospectus involves risks. See “ Risk Factors” on page 1. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense. We may offer the preferred membership interests directly or through underwriters, agents or dealers. Each prospectus supplement will provide the terms of the plan of distribution for the related series of preferred membership interests. The date of this prospectus is August 6, 2025.

TABLE OF CONTENTS

|                                            |     | Page |   |
| RISK FACTORS                               |     |      | 1 |
| ABOUT THIS PROSPECTUS                      |     |      | 1 |
| ENTERGY LOUISIANA, LLC                     |     |      | 1 |
| WHERE YOU CAN FIND MORE INFORMATION        |     |      | 2 |
| USE OF PROCEEDS                            |     |      | 2 |
| DESCRIPTION OF THE NEW PREFERRED INTEREST