DTE subsidiary EES Coke loses partial summary judgment on Clean Air Act violations; trial on remedies set for Sept 15

DTE ENERGY CO

U.S. District Court granted EPA partial summary judgment on liability on August 25, 2025; EES Coke plans to appeal to Sixth Circuit.
Trial on remedies begins September 15, 2025; EPA brief requests penalties; outcome and financial impact unknown.
Parent entities including DTE Energy added as defendants in May 2024, but no additional claims alleged.
EES Coke had argued its Michigan-issued permits complied with Clean Air Act; EPA alleged non-attainment new source review violations.

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