<SEC-DOCUMENT>0000352541-18-000015-index.html : 20180222 <SEC-HEADER>0000352541-18-000015.hdr.sgml : 20180222 <ACCEPTANCE-DATETIME>20180222171247 ACCESSION NUMBER: 0000352541-18-000015 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 3 CONFORMED PERIOD OF REPORT: 20180222 ITEM INFORMATION: Results of Operations and Financial Condition ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20180222 DATE AS OF CHANGE: 20180222 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ALLIANT ENERGY CORP CENTRAL INDEX KEY: 0000352541 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC & OTHER SERVICES COMBINED [4931] IRS NUMBER: 391380265 STATE OF INCORPORATION: WI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-09894 FILM NUMBER: 18633501 BUSINESS ADDRESS: STREET 1: 4902 NORTH BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 BUSINESS PHONE: 608-458-3311 MAIL ADDRESS: STREET 1: 4902 NORTH BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 FORMER COMPANY: FORMER CONFORMED NAME: INTERSTATE ENERGY CORP DATE OF NAME CHANGE: 19980427 FORMER COMPANY: FORMER CONFORMED NAME: WPL HOLDINGS INC DATE OF NAME CHANGE: 19920703 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: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-04117 FILM NUMBER: 18633503 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 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WISCONSIN POWER & LIGHT CO CENTRAL INDEX KEY: 0000107832 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC & OTHER SERVICES COMBINED [4931] IRS NUMBER: 390714890 STATE OF INCORPORATION: WI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 000-00337 FILM NUMBER: 18633502 BUSINESS ADDRESS: STREET 1: 4902 NORTH BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 BUSINESS PHONE: 608-458-3311 MAIL ADDRESS: STREET 1: 4902 N BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>lnt022220188-k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: lnt022220188-k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>lnt022220188-kexh991.htm <DESCRIPTION>EXHIBIT 99.1 <TEXT> Document 2 - file: lnt022220188-kexh991.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>alliantenergylogo8k02222018.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: alliantenergylogo8k02222018.jpg
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