---
schema_version: "secwatch.filing_event.v1"
accession: "0000090144-23-000009"
form_type: "8-K"
ticker: null
cik: "0000090144"
company_name: "SIERRA PACIFIC POWER CO"
filed_at: "2023-09-18T23:59:59+00:00"
generated_at: "2026-06-10T15:44:49.310259+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Sierra Pacific Power issues $400M 5.9% notes due 2054

## Summary
- Completed sale of $400M aggregate principal of 5.900% General and Refunding Mortgage Notes due 2054.
- Interest payable semi-annually starting March 15, 2024; notes mature March 15, 2054.
- Proceeds to fund capex, repay short-term borrowings used to redeem prior 3.375% Series T notes.
- Company entered into registration rights agreement; failure to register could trigger 0.25%-0.50% additional interest per annum.
- Corrected prior 8-K error regarding Events of Default under the G&R Indenture.

## SEC filing metadata
- accession: 0000090144-23-000009
- form_type: 8-K
- cik: 0000090144
- company_name: SIERRA PACIFIC POWER CO
- filed_at: 2023-09-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/90144/000009014423000009/0000090144-23-000009-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/90144/000009014423000009/sppc-20230913.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000090144-23-000009
- JSON: https://secwatch.observer/filing/0000090144-23-000009.json
- Plain text: https://secwatch.observer/filing/0000090144-23-000009.txt

## Key facts
- Debt Financings
  SIERRA PACIFIC POWER CO incurred senior notes of $400 million with The Bank of New York Mellon Trust Company, N.A. at 5.900% maturing March 15, 2054.
  - Instrument: senior notes
  - Principal: $400 million
  - Counterparty: The Bank of New York Mellon Trust Company, N.A.
  - Rate: 5.900%
  - Maturity: March 15, 2054
  - Event: incurrence
  source text: On September 15, 2023, Sierra Pacific Power Company (the “Company”), completed the sale of $400 million in aggregate principal amount of its 5.900% General and Refunding Mortgage Notes, SPPC Series 2023A, due 2054 (the "Notes") pursuant to a Purchase Agreement dated September 13, 2023, between the Company and representatives of the purchasers.
  evidence_url: https://www.sec.gov/Archives/edgar/data/90144/000009014423000009/0000090144-23-000009-index.htm

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