Company: DTK
Filing Date: 2025-10-30
Form Type: 10-Q
Source: 0000936340-25-000223
Chunk: 102

Company: DTE ENERGY CO
Filing Date: 2025-10-30
Form: 10-Q
Item: Part I, Item 1
Chunk 102
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 granted by the trial court on August 25, 2025.  EES Coke sought certification for an interlocutory appeal to the Sixth Circuit Court of Appeals, which was denied on September 12, 2025.  Trial was held on remedies and parent liability, and concluded on September 29, 2025.  The case is presently stayed due to the federal government shutdown.  DTE Energy has accrued $8 million as our best estimate of penalties as of September 30, 2025.  At the present time, DTE Energy cannot predict the final outcome or financial impact of this matter.OtherIn 2010, the EPA finalized a new one-hour SO2 ambient air quality standard that requires states to submit plans and associated timelines for non-attainment areas that demonstrate attainment with the new SO2 standard in phases.  Phase 1 addresses non-attainment areas designated based on ambient monitoring data.  Phase 2 addresses non-attainment areas with large sources of SO2 and modeled concentrations exceeding the National Ambient Air Quality Standards for SO2.  Phase 3 addresses smaller sources of SO2 with modeled or monitored exceedances of the new SO2 standard.Michigan's Phase 1 non-attainment area included DTE Energy facilities.  However, the EPA published a Federal Implementation Plan (FIP) for the area in June 2022 that did not impact any DTE Energy facilities.  It is also not expected that Phase 3 will have any impact on DTE Energy.Michigan's Phase 2 non-attainment area includes DTE Electric facilities in St. Clair County.  The EPA approved a clean data determination request submitted by EGLE.  This determination suspends certain planning requirements and sanctions for the non-attainment area for as long as the area continues to attain the 2010 SO2 air quality standards, but this does not automatically redesignate the area to attainment.  Until the area is officially redesignated as attainment, DTE Energy is unable to determine the impacts.REF GuaranteesDTE Energy provided certain guarantees and indemnities in conjunction with the sales of interests in or lease of its previously operated REF facilities.  The guarantees cover potential commercial, environmental, and tax-related obligations that will survive until 90 days after expiration of all applicable statutes of limitations.  DTE Energy estimates that its maximum potential liability under these guarantees at September 30, 2025 was $201 million.  Payments under these guarantees are considered remote.Other Guarantees