<SEC-DOCUMENT>0001993004-26-000038-index.html : 20260527
<SEC-HEADER>0001993004-26-000038.hdr.sgml : 20260527
<ACCEPTANCE-DATETIME>20260527070531
ACCESSION NUMBER:		0001993004-26-000038
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		65
CONFORMED PERIOD OF REPORT:	20260527
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20260527
DATE AS OF CHANGE:		20260527

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NorthWestern Energy Group, Inc.
		CENTRAL INDEX KEY:			0001993004
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				932020320
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-56598
		FILM NUMBER:		261022143

	BUSINESS ADDRESS:	
		STREET 1:		3010 WEST 69TH STREET
		CITY:			SIOUX FALLS
		STATE:			SD
		ZIP:			57108
		BUSINESS PHONE:		605-978-2900

	MAIL ADDRESS:	
		STREET 1:		3010 WEST 69TH STREET
		CITY:			SIOUX FALLS
		STATE:			SD
		ZIP:			57108
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>nwe-20260527.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: nwe-20260527.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>exh991invconfpres26.htm
<DESCRIPTION>EX-99.1 INVESTOR CONF PRES 2026
<TEXT>
Document 2 - file: exh991invconfpres26.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>nwe-20260527.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
<TEXT>
Document 3 - file: nwe-20260527.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>nwe-20260527_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
<TEXT>
Document 4 - file: nwe-20260527_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>nwe-20260527_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
Document 5 - file: nwe-20260527_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>exh991invconfpres26001.jpg
<TEXT>
Document 6 - file: exh991invconfpres26001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>exh991invconfpres26002.jpg
<TEXT>
Document 7 - file: exh991invconfpres26002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>exh991invconfpres26003.jpg
<TEXT>
Document 8 - file: exh991invconfpres26003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>exh991invconfpres26004.jpg
<TEXT>
Document 9 - file: exh991invconfpres26004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>exh991invconfpres26005.jpg
<TEXT>
Document 10 - file: exh991invconfpres26005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>exh991invconfpres26006.jpg
<TEXT>
Document 11 - file: exh991invconfpres26006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>exh991invconfpres26007.jpg
<TEXT>
Document 12 - file: exh991invconfpres26007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>exh991invconfpres26008.jpg
<TEXT>
Document 13 - file: exh991invconfpres26008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>exh991invconfpres26009.jpg
<TEXT>
Document 14 - file: exh991invconfpres26009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>exh991invconfpres26010.jpg
<TEXT>
Document 15 - file: exh991invconfpres26010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>exh991invconfpres26011.jpg
<TEXT>
Document 16 - file: exh991invconfpres26011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>exh991invconfpres26012.jpg
<TEXT>
Document 17 - file: exh991invconfpres26012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>exh991invconfpres26013.jpg
<TEXT>
Document 18 - file: exh991invconfpres26013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>exh991invconfpres26014.jpg
<TEXT>
Document 19 - file: exh991invconfpres26014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>exh991invconfpres26015.jpg
<TEXT>
Document 20 - file: exh991invconfpres26015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>exh991invconfpres26016.jpg
<TEXT>
Document 21 - file: exh991invconfpres26016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>exh991invconfpres26017.jpg
<TEXT>
Document 22 - file: exh991invconfpres26017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>exh991invconfpres26018.jpg
<TEXT>
Document 23 - file: exh991invconfpres26018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>exh991invconfpres26019.jpg
<TEXT>
Document 24 - file: exh991invconfpres26019.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>exh991invconfpres26020.jpg
<TEXT>
Document 25 - file: exh991invconfpres26020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>exh991invconfpres26021.jpg
<TEXT>
Document 26 - file: exh991invconfpres26021.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>exh991invconfpres26022.jpg
<TEXT>
Document 27 - file: exh991invconfpres26022.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>exh991invconfpres26023.jpg
<TEXT>
Document 28 - file: exh991invconfpres26023.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>29
<FILENAME>exh991invconfpres26024.jpg
<TEXT>
Document 29 - file: exh991invconfpres26024.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>30
<FILENAME>exh991invconfpres26025.jpg
<TEXT>
Document 30 - file: exh991invconfpres26025.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>31
<FILENAME>exh991invconfpres26026.jpg
<TEXT>
Document 31 - file: exh991invconfpres26026.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>32
<FILENAME>exh991invconfpres26027.jpg
<TEXT>
Document 32 - file: exh991invconfpres26027.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>33
<FILENAME>exh991invconfpres26028.jpg
<TEXT>
Document 33 - file: exh991invconfpres26028.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>34
<FILENAME>exh991invconfpres26029.jpg
<TEXT>
Document 34 - file: exh991invconfpres26029.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>35
<FILENAME>exh991invconfpres26030.jpg
<TEXT>
Document 35 - file: exh991invconfpres26030.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>36
<FILENAME>exh991invconfpres26031.jpg
<TEXT>
Document 36 - file: exh991invconfpres26031.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>37
<FILENAME>exh991invconfpres26032.jpg
<TEXT>
Document 37 - file: exh991invconfpres26032.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>38
<FILENAME>exh991invconfpres26033.jpg
<TEXT>
Document 38 - file: exh991invconfpres26033.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>39
<FILENAME>exh991invconfpres26034.jpg
<TEXT>
Document 39 - file: exh991invconfpres26034.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>40
<FILENAME>exh991invconfpres26035.jpg
<TEXT>
Document 40 - file: exh991invconfpres26035.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>41
<FILENAME>exh991invconfpres26036.jpg
<TEXT>
Document 41 - file: exh991invconfpres26036.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>42
<FILENAME>exh991invconfpres26037.jpg
<TEXT>
Document 42 - file: exh991invconfpres26037.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>43
<FILENAME>exh991invconfpres26038.jpg
<TEXT>
Document 43 - file: exh991invconfpres26038.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>44
<FILENAME>exh991invconfpres26039.jpg
<TEXT>
Document 44 - file: exh991invconfpres26039.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>45
<FILENAME>exh991invconfpres26040.jpg
<TEXT>
Document 45 - file: exh991invconfpres26040.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>46
<FILENAME>exh991invconfpres26041.jpg
<TEXT>
Document 46 - file: exh991invconfpres26041.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>47
<FILENAME>exh991invconfpres26042.jpg
<TEXT>
Document 47 - file: exh991invconfpres26042.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>48
<FILENAME>exh991invconfpres26043.jpg
<TEXT>
Document 48 - file: exh991invconfpres26043.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>49
<FILENAME>exh991invconfpres26044.jpg
<TEXT>
Document 49 - file: exh991invconfpres26044.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>50
<FILENAME>exh991invconfpres26045.jpg
<TEXT>
Document 50 - file: exh991invconfpres26045.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>51
<FILENAME>exh991invconfpres26046.jpg
<TEXT>
Document 51 - file: exh991invconfpres26046.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>52
<FILENAME>exh991invconfpres26047.jpg
<TEXT>
Document 52 - file: exh991invconfpres26047.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>53
<FILENAME>exh991invconfpres26048.jpg
<TEXT>
Document 53 - file: exh991invconfpres26048.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>54
<FILENAME>exh991invconfpres26049.jpg
<TEXT>
Document 54 - file: exh991invconfpres26049.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>55
<FILENAME>exh991invconfpres26050.jpg
<TEXT>
Document 55 - file: exh991invconfpres26050.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>56
<FILENAME>exh991invconfpres26051.jpg
<TEXT>
Document 56 - file: exh991invconfpres26051.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>57
<FILENAME>exh991invconfpres26052.jpg
<TEXT>
Document 57 - file: exh991invconfpres26052.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>58
<FILENAME>nwe-20260527_g1.jpg
<TEXT>
Document 58 - file: nwe-20260527_g1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>60
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 60 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>61
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 61 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>62
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 62 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>64
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 64 - file: FilingSummary.html

Document 64 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>66
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 66 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>67
<FILENAME>0001993004-26-000038-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 67 - file: 0001993004-26-000038-xbrl.zip

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>68
<FILENAME>nwe-20260527_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 68 - file: nwe-20260527_htm.html

Document 68 - RAW XML: nwe-20260527_htm.xml

</DOCUMENT>
</SEC-DOCUMENT>