<SEC-DOCUMENT>0001193125-23-236604-index.html : 20230918 <SEC-HEADER>0001193125-23-236604.hdr.sgml : 20230918 <ACCEPTANCE-DATETIME>20230918083906 ACCESSION NUMBER: 0001193125-23-236604 CONFORMED SUBMISSION TYPE: 424B5 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230918 DATE AS OF CHANGE: 20230918 FILER: COMPANY DATA: COMPANY CONFORMED NAME: INTERSTATE POWER & LIGHT CO CENTRAL INDEX KEY: 0000052485 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC & OTHER SERVICES COMBINED [4931] IRS NUMBER: 420331370 STATE OF INCORPORATION: IA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 424B5 SEC ACT: 1933 Act SEC FILE NUMBER: 333-251353-01 FILM NUMBER: 231260210 BUSINESS ADDRESS: STREET 1: 200 FIRST ST SE STREET 2: ALLIANT ENERGY TOWER CITY: CEDAR RAPIDS STATE: IA ZIP: 52401 BUSINESS PHONE: 3193984411 MAIL ADDRESS: STREET 1: 200 FIRST ST SE STREET 2: ALLIANT ENERGY TOWER CITY: CEDAR RAPIDS STATE: IA ZIP: 52401 FORMER COMPANY: FORMER CONFORMED NAME: IES UTILITIES INC DATE OF NAME CHANGE: 20020103 FORMER COMPANY: FORMER CONFORMED NAME: IES UTILITIES INC DATE OF NAME CHANGE: 19940107 FORMER COMPANY: FORMER CONFORMED NAME: IOWA ELECTRIC LIGHT & POWER CO DATE OF NAME CHANGE: 19920703 </SEC-HEADER> <DOCUMENT> <TYPE>424B5 <SEQUENCE>1 <FILENAME>d464746d424b5.htm <DESCRIPTION>424B5 <TEXT> Document 1 - file: d464746d424b5.htm
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