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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000073088-21-000026
Filing Date
2021-02-12
Accepted
2021-02-11 19:35:02
Documents
128
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K nwe-20201231.htm   iXBRL 10-K 3805592
2 EXHIBIT 4.5 DESCRIPTION OF CAPITAL STOCK exhibit45descriptionofcapi.htm EX-4.5 21388
3 EXHIBIT 21 SUBSIDIARIES 10-K 2020 exhibit21subsidiaries2020.htm EX-21 6165
4 EXHIBIT 23 AUDITOR CONSENT exhibit23consent10k2020.htm EX-23 3483
5 EXHIBIT 31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER exhibit311certification2020.htm EX-31.1 10461
6 EXHIBIT 31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER exhibit312certification2020.htm EX-31.2 10190
7 EXHIBIT 32.1 CERTIFICATION OF ROBERT C. ROWE PURSUANT TO SECTION 906 exhibit321certification2020.htm EX-32.1 4858
8 EXHIBIT 32.2 CERTIFICATION OF BRIAN B. BIRD PURSUANT TO SECTION 906 exhibit322certification2020.htm EX-32.2 4822
14 nwe-20201231_g1.jpg GRAPHIC 123972
15 nwe-20201231_g2.jpg GRAPHIC 62137
16 nwe-20201231_g3.jpg GRAPHIC 77596
17 nwe-20201231_g4.jpg GRAPHIC 121507
18 nwe-20201231_g5.jpg GRAPHIC 92011
19 nwe-20201231_g6.jpg GRAPHIC 76078
20 nwe-20201231_g7.jpg GRAPHIC 61324
21 nwe-20201231_g8.jpg GRAPHIC 98853
  Complete submission text file 0000073088-21-000026.txt   18900631

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT nwe-20201231.xsd EX-101.SCH 92822
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT nwe-20201231_cal.xml EX-101.CAL 169450
11 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT nwe-20201231_def.xml EX-101.DEF 727787
12 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT nwe-20201231_lab.xml EX-101.LAB 1181301
13 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT nwe-20201231_pre.xml EX-101.PRE 863980
22 EXTRACTED XBRL INSTANCE DOCUMENT nwe-20201231_htm.xml XML 3614672
Mailing Address 3010 W 69TH STREET SIOUX FALLS SD 57108
Business Address 3010 W 69TH STREET SIOUX FALLS SD 57108 6059782908
NORTHWESTERN CORP (Filer) CIK: 0000073088 (see all company filings)

IRS No.: 460172280 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-10499 | Film No.: 21621863
SIC: 4931 Electric & Other Services Combined