NORTHERN STATES POWER CO /WI/
SEC Filing List

CIK: 0000072909

Company Information

First EDGAR Filing Last Filing Category Fiscal Year End
1994-03-28 2026-07-30 Non-accelerated filer 12/31
Exchange Current Cusip SIC Code State
4931-Electric & Other Services Combined WI
SEC Company Name Former Names
Northern States Power Co /wi/
Business Address Mailing Address
1414 W HAMILTON AVE, EAU CLAIRE, WI 54702 P O BOX 8, EAU CLAIRE, WI 54702-008