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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000352541-13-000007
Filing Date
2013-02-26
Accepted
2013-02-26 17:15:59
Documents
25
Period of Report
2012-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K lnt1231201210-k.htm 10-K 9835024
2 SUMMARY OF COMPENSATION AND BENEFITS FOR NON-EMPLOYEE DIRECTORS lnt1231201210-kex1015.htm EX-10.15 7241
3 RATIO OF EARNINGS TO FIXED CHARGES FOR ALLIANT ENERGY lnt1231201210-kex121.htm EX-12.1 51037
4 RATIO OF EARNINGS TO FIXED CHARGES FOR IPL lnt1231201210-kex122.htm EX-12.2 52865
5 RATIO OF EARNINGS TO FIXED CHARGES FOR WPL lnt1231201210-kex123.htm EX-12.3 55561
6 SUBSIDIARIES OF ALLIANT ENERGY lnt1231201210-kex211.htm EX-21.1 5097
7 SUBSIDIARIES OF WPL lnt1231201210-kex212.htm EX-21.2 5085
8 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR ALLIANT ENERGY lnt1231201210-kex231.htm EX-23.1 3860
9 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR IPL lnt1231201210-kex232.htm EX-23.2 3553
10 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR WPL lnt1231201210-kex233.htm EX-23.3 3552
11 CERTIFICATION OF THE CHAIRMAN, PRESIDENT AND CEO FOR ALLIANT ENERGY lnt1231201210-kex311.htm EX-31.1 12325
12 CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR ALLIANT ENERGY lnt1231201210-kex312.htm EX-31.2 12323
13 CERTIFICATION OF THE CHAIRMAN AND CEO FOR IPL lnt1231201210-kex313.htm EX-31.3 12301
14 CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR IPL lnt1231201210-kex314.htm EX-31.4 12324
15 CERTIFICATION OF THE CHAIRMAN AND CEO FOR WPL lnt1231201210-kex315.htm EX-31.5 12294
16 CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR WPL lnt1231201210-kex316.htm EX-31.6 12321
17 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR ALLIANT ENERGY lnt1231201210-kex321.htm EX-32.1 5501
18 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR IPL lnt1231201210-kex322.htm EX-32.2 5471
19 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR WPL lnt1231201210-kex323.htm EX-32.3 5470
  Complete submission text file 0000352541-13-000007.txt   127913308

Data Files

Seq Description Document Type Size
20 XBRL INSTANCE DOCUMENT lnt-20121231.xml EX-101.INS 35645321
21 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT lnt-20121231.xsd EX-101.SCH 213646
22 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT lnt-20121231_cal.xml EX-101.CAL 211118
23 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT lnt-20121231_def.xml EX-101.DEF 1433413
24 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT lnt-20121231_lab.xml EX-101.LAB 2033194
25 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT lnt-20121231_pre.xml EX-101.PRE 1554655
Mailing Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401
Business Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401 3193984411
INTERSTATE POWER & LIGHT CO (Filer) CIK: 0000052485 (see all company filings)

IRS No.: 420331370 | State of Incorp.: IA | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-04117 | Film No.: 13643718
SIC: 4931 Electric & Other Services Combined

Mailing Address 4902 N BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
WISCONSIN POWER & LIGHT CO (Filer) CIK: 0000107832 (see all company filings)

IRS No.: 390714890 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-00337 | Film No.: 13643717
SIC: 4931 Electric & Other Services Combined

Mailing Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
ALLIANT ENERGY CORP (Filer) CIK: 0000352541 (see all company filings)

IRS No.: 391380265 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-09894 | Film No.: 13643716
SIC: 4931 Electric & Other Services Combined