---
schema_version: "secwatch.filing_event.v1"
accession: "0000936340-26-000056"
form_type: "8-K"
ticker: "DTE"
cik: "0000936340"
company_name: "DTE ENERGY CO"
filed_at: "2026-02-18T23:59:59+00:00"
generated_at: "2026-05-16T02:17:32.151115+00:00"
event_type: "litigation"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# DTE Energy subsidiary hit with $100M civil penalty in Clean Air Act case

## Summary
- Court imposed $100M civil penalty on DTE Energy and EES Coke for Clean Air Act violations at Michigan coke battery plant.
- Order also requires defendants to seek permit for pollution controls and fund a community air quality improvement committee.
- Defendants will appeal judgment; final outcome and additional financial impact cannot be predicted.
- Partial summary judgment on liability was granted Aug 25, 2025; trial on remedies concluded Sep 29, 2025.
- DTE Energy was added as defendant in May 2024; original complaint filed June 1, 2022 by DOJ on behalf of EPA.

## SEC filing metadata
- accession: 0000936340-26-000056
- form_type: 8-K
- ticker: DTE
- cik: 0000936340
- company_name: DTE ENERGY CO
- filed_at: 2026-02-18T23:59:59+00:00
- event_type: litigation
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/936340/000093634026000056/0000936340-26-000056-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/936340/000093634026000056/dte-20260218.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000936340-26-000056
- JSON: https://secwatch.observer/filing/0000936340-26-000056.json
- Plain text: https://secwatch.observer/filing/0000936340-26-000056.txt

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