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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000352541-22-000020
Filing Date
2022-02-18
Accepted
2022-02-18 12:53:31
Documents
164
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K lnt-20211231.htm   iXBRL 10-K 7351387
2 EX-10.3D lnt1231202110-kex103d.htm EX-10.3D 71554
3 EX-10.3E lnt1231202110-kex103e.htm EX-10.3E 50737
4 EX-10.3F lnt1231202110-kex103f.htm EX-10.3F 72108
5 EX-10.3G lnt1231202110-kex103g.htm EX-10.3G 70397
6 EX-10.14 lnt1231202110-kex1014.htm EX-10.14 7413
7 EX-21.1 lnt1231202110-kex211.htm EX-21.1 3456
8 EX-23.1 lnt1231202110-kex231.htm EX-23.1 2352
9 EX-23.2 lnt1231202110-kex232.htm EX-23.2 2119
10 EX-23.3 lnt1231202110-kex233.htm EX-23.3 2116
11 EX-31.1 lnt1231202110-kex311.htm EX-31.1 9448
12 EX-31.2 lnt1231202110-kex312.htm EX-31.2 9462
13 EX-31.3 lnt1231202110-kex313.htm EX-31.3 9455
14 EX-31.4 lnt1231202110-kex314.htm EX-31.4 9478
15 EX-31.5 lnt1231202110-kex315.htm EX-31.5 9451
16 EX-31.6 lnt1231202110-kex316.htm EX-31.6 9476
17 EX-32.1 lnt1231202110-kex321.htm EX-32.1 4377
18 EX-32.2 lnt1231202110-kex322.htm EX-32.2 4374
19 EX-32.3 lnt1231202110-kex323.htm EX-32.3 4373
25 GRAPHIC lnt-20211231_g1.jpg GRAPHIC 334542
26 GRAPHIC lnt-20211231_g2.jpg GRAPHIC 12998
27 GRAPHIC lnt-20211231_g3.jpg GRAPHIC 12978
28 GRAPHIC lnt-20211231_g4.jpg GRAPHIC 11603
29 GRAPHIC lnt-20211231_g5.jpg GRAPHIC 11898
30 GRAPHIC lnt-20211231_g6.jpg GRAPHIC 11859
31 GRAPHIC lnt-20211231_g7.jpg GRAPHIC 9574
32 GRAPHIC lnt-20211231_g8.jpg GRAPHIC 10754
  Complete submission text file 0000352541-22-000020.txt   46176479

Data Files

Seq Description Document Type Size
20 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT lnt-20211231.xsd EX-101.SCH 116188
21 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT lnt-20211231_cal.xml EX-101.CAL 108826
22 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT lnt-20211231_def.xml EX-101.DEF 1161270
23 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT lnt-20211231_lab.xml EX-101.LAB 1248886
24 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT lnt-20211231_pre.xml EX-101.PRE 1220148
158 EXTRACTED XBRL INSTANCE DOCUMENT lnt-20211231_htm.xml XML 15682649
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.: 22651869
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.: 22651868
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.: 22651867
SIC: 4931 Electric & Other Services Combined