---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-037912"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2026-03-31T23:59:59+00:00"
generated_at: "2026-05-15T08:07:37.715390+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# FERC order cuts transmission ROE; Eversource slashes 2026 EPS guidance to $4.57-$4.72

## Summary
- FERC set base ROE at 9.57% and max incentive ROE at 12.09% for New England transmission owners.
- Eversource expects $70M reduction in 2026 after-tax earnings from the ROE change and related adders.
- Revised 2026 non-GAAP EPS guidance to $4.57-$4.72 per share; mid-point $4.65.
- Potential Aquarion sale would add a $15M negative earnings impact if it closes in 2026.
- Company filing motion for stay and evaluating Section 205 rate filing with other transmission owners.

## SEC filing metadata
- accession: 0001104659-26-037912
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2026-03-31T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.85
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465926037912/0001104659-26-037912-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465926037912/tm2610782d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-037912
- JSON: https://secwatch.observer/filing/0001104659-26-037912.json
- Plain text: https://secwatch.observer/filing/0001104659-26-037912.txt

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