---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-108627"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2021-08-23T23:59:59+00:00"
generated_at: "2026-06-29T08:21:35.792927+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues $300M of 1.95% debentures due 2031

## Summary
- $300M principal, 1.95% coupon, semi-annual interest, matures Aug 15, 2031.
- Issued under indenture dated 1988; trustee is BNY Mellon Trust.
- Underwriters: Barclays, BofA Securities, PNC Capital Markets, RBC Capital Markets.
- Debentures registered under Form S-3 (File 333-231118-02).

## SEC filing metadata
- accession: 0001104659-21-108627
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2021-08-23T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465921108627/0001104659-21-108627-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465921108627/tm2125690d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-108627
- JSON: https://secwatch.observer/filing/0001104659-21-108627.json
- Plain text: https://secwatch.observer/filing/0001104659-21-108627.txt

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