NSP-Wisconsin issues $250M of 5.65% First Mortgage Bonds due 2054

NORTHERN STATES POWER CO /WI/

$250 million aggregate principal of 5.65% First Mortgage Bonds, Series due June 15, 2054, issued as a reopening.
Underwriters include BNP Paribas, CIBC World Markets, and RBC Capital Markets.
Prospectus supplement was filed with the SEC on June 18, 2025; bonds governed by Supplemental Indenture dated May 13, 2024.

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