Asset Retirement Obligations

9 Months Ended

Sep. 30, 2025

Asset Retirement Obligation Disclosure [Abstract]

ASSET RETIREMENT OBLIGATIONS

A reconciliation of the Asset retirement obligations for the nine months ended September 30, 2025 follows:


	DTE Energy		DTE Electric
	(In millions)
Asset retirement obligations at December 31, 2024	$	4,031	$	3,791
Accretion	176		166
Liabilities incurred	32		32
Liabilities settled	(3)		(3)
Revision in estimated cash flows(a)	177		177
Asset retirement obligations at September 30, 2025	$	4,413	$	4,163

_______________________________________

(a)Revision in estimated cash flows was primarily due to the impact of the CCR regulations on DTE Electric's coal ash storage facility asset retirement obligations, as well as revision of estimated cash flows related to DTE Electric's Fermi 1 obligations. Refer to Note 14 to the Consolidated Financial Statements, "Commitments and Contingencies," for additional information regarding the CCR regulations.

In the third quarter of 2025, DTE Electric initiated preparatory steps to facilitate the license termination of the Fermi 1 facility, as required by the NRC. The NRC mandates license termination by 2032. Following management's reassessment of project timing and estimated cash flows, the Registrants recorded an additional $47 million accrual related to the decommissioning of Fermi 1. The expense is reflected in Asset (gains) losses and impairments, net in the Registrants' Consolidated Statements of Operations. Key risks to successful project completion remain, primarily due to uncertainties around contamination levels in piping and volume of waste material. The estimate may be revised as more site-specific information becomes available.