Mailing Address
PO BOX 1400
RAPID CITY SD 57709
Business Address
Mailing Address
3010 WEST 69TH STREET
SIOUX FALLS SD 57108
Business Address
3010 WEST 69TH STREET
SIOUX FALLS SD 57108
605-978-2900
NorthWestern Energy Group, Inc. (Issuer)
CIK: 0001993004 (see all company filings)
IRS No.: 932020320 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)