---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-061944"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2022-05-17T23:59:59+00:00"
generated_at: "2026-06-25T11:29:49.479686+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues $450M of 4.55% Debentures due 2052

## Summary
- Issued $450,000,000 aggregate principal of 4.55% Debentures maturing June 1, 2052.
- Interest at 4.55% payable semi-annually on June 1 and December 1, commencing December 1, 2022.
- Underwriters include Barclays, BNY Mellon Capital Markets, BofA Securities, and U.S. Bancorp Investments.
- Debentures issued under indenture dated September 1, 1988 with The Bank of New York Mellon Trust as trustee.

## SEC filing metadata
- accession: 0001104659-22-061944
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2022-05-17T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465922061944/0001104659-22-061944-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465922061944/tm2215678d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-061944
- JSON: https://secwatch.observer/filing/0001104659-22-061944.json
- Plain text: https://secwatch.observer/filing/0001104659-22-061944.txt

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