---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-140719"
form_type: "8-K"
ticker: null
cik: "0000072909"
company_name: "NORTHERN STATES POWER CO /WI/"
filed_at: "2023-05-10T23:59:59+00:00"
generated_at: "2026-06-15T07:27:30.502337+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Northern States Power issues $125M of 5.30% First Mortgage Bonds due 2053

## Summary
- Issued $125M aggregate principal of 5.30% First Mortgage Bonds due June 15, 2053.
- Net proceeds of ~$123.9M; will fund general corporate purposes, working capital, capex, and repay short-term debt.
- Bonds secured by first mortgage lien on substantially all real and fixed properties.
- Redemption: make-whole prior to Dec 15, 2052; par plus accrued interest thereafter.
- Closing expected June 8, 2023; KeyBanc Capital Markets acted as sole placement agent.

## SEC filing metadata
- accession: 0001193125-23-140719
- form_type: 8-K
- cik: 0000072909
- company_name: NORTHERN STATES POWER CO /WI/
- filed_at: 2023-05-10T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/72909/000119312523140719/0001193125-23-140719-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/72909/000119312523140719/d420640d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-140719
- JSON: https://secwatch.observer/filing/0001193125-23-140719.json
- Plain text: https://secwatch.observer/filing/0001193125-23-140719.txt

## Key facts
- Debt Financings
  NORTHERN STATES POWER CO /WI/ incurred senior notes of $125 million with certain institutional investors at 5.30% maturing June 15, 2053.
  - Instrument: senior notes
  - Principal: $125 million
  - Counterparty: certain institutional investors
  - Rate: 5.30%
  - Maturity: June 15, 2053
  - Event: incurrence
  source text: On May 10, 2023, Northern States Power Company, a Wisconsin corporation (“NSP-Wisconsin”), entered into a Bond Purchase Agreement (the “Bond Purchase Agreement”) with certain institutional investors for the offer and sale of $125 million in aggregate principal amount of 5.30% First Mortgage Bonds, Series due June 15, 2053 (the “Bonds”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/72909/000119312523140719/0001193125-23-140719-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.