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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000352541-20-000021
Filing Date
2020-02-21
Accepted
2020-02-21 14:15:21
Documents
167
Period of Report
2019-12-31

Document Format Files

Seq Description Document Type Size
1 10-K lnt1231201910-k.htm   iXBRL 10-K 8886756
2 DESCRIPTION OF COMMON STOCK OF ALLIANT ENERGY lnt1231201910-kex426.htm EX-4.26 15340
3 DESCRIPTION OF 5.100% SERIES D CUMULATIVE PERPETUAL PREFERRED STOCK OF IPL lnt1231201910-kex427.htm EX-4.27 29352
4 SUMMARY OF COMPENSATION AND BENEFITS FOR NON-EMPLOYEE DIRECTORS lnt1231201910-kex1016.htm EX-10.16 8664
5 SUBSIDIARIES OF ALLIANT ENERGY lnt1231201910-kex211.htm EX-21.1 5054
6 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR ALLIANT ENERGY lnt1231201910-kex231.htm EX-23.1 3583
7 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR IPL lnt1231201910-kex232.htm EX-23.2 3348
8 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR WPL lnt1231201910-kex233.htm EX-23.3 3346
9 CERTIFICATION OF THE CEO FOR ALLIANT ENERGY lnt1231201910-kex311.htm EX-31.1 12121
10 CERTIFICATION OF THE CFO FOR ALLIANT ENERGY lnt1231201910-kex312.htm EX-31.2 12168
11 CERTIFICATION OF THE CEO FOR IPL lnt1231201910-kex313.htm EX-31.3 12214
12 CERTIFICATION OF THE CFO FOR IPL lnt1231201910-kex314.htm EX-31.4 12173
13 CERTIFICATION OF THE CEO FOR WPL lnt1231201910-kex315.htm EX-31.5 12114
14 CERTIFICATION OF THE CFO FOR WPL lnt1231201910-kex316.htm EX-31.6 12171
15 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR ALLIANT ENERGY lnt1231201910-kex321.htm EX-32.1 5479
16 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR IPL lnt1231201910-kex322.htm EX-32.2 5500
17 WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR WPL lnt1231201910-kex323.htm EX-32.3 5499
23 GRAPHIC alliantenergylogo.jpg GRAPHIC 334542
24 GRAPHIC chart-5dda294ea14958f8bf0.jpg GRAPHIC 8328
25 GRAPHIC chart-088d46b1342b525aace.jpg GRAPHIC 9478
26 GRAPHIC chart-562fefa9a1c854ba97c.jpg GRAPHIC 8328
27 GRAPHIC chart-2877faea013451a9a12.jpg GRAPHIC 10104
28 GRAPHIC chart-79379db8506255b7a49.jpg GRAPHIC 10170
29 GRAPHIC chart-aa19012e16de548394a.jpg GRAPHIC 12129
30 GRAPHIC chart-fe6482e3240f5fac936.jpg GRAPHIC 9473
  Complete submission text file 0000352541-20-000021.txt   62259979

Data Files

Seq Description Document Type Size
18 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT lnt-20191231.xsd EX-101.SCH 121681
19 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT lnt-20191231_cal.xml EX-101.CAL 154474
20 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT lnt-20191231_def.xml EX-101.DEF 1157078
21 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT lnt-20191231_lab.xml EX-101.LAB 1394558
22 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT lnt-20191231_pre.xml EX-101.PRE 1239745
67 EXTRACTED XBRL INSTANCE DOCUMENT lnt1231201910-k_htm.xml XML 23691163
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.: 20638935
SIC: 4931 Electric & Other Services Combined
Office of Energy & Transportation

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.: 20638936
SIC: 4931 Electric & Other Services Combined
Office of Energy & Transportation

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.: 20638937
SIC: 4931 Electric & Other Services Combined
Office of Energy & Transportation