Company: DTK
Filing Date: 2025-02-13
Form Type: 10-K
Source: 0000936340-25-000065
Chunk: 48

Company: DTE ENERGY CO
Filing Date: 2025-02-13
Form: 10-K
Item: Item 1
Chunk 48
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DTE Gas is directly connected to interstate pipelines, providing access to most of the major natural gas supply producing regions in the Appalachian, Gulf Coast, Mid-Continent, and Canadian regions.  The primary long-term transportation supply contracts at December 31, 2024 are listed below.

Availability(MDth/d)ContractExpirationVector Pipeline L.P.182025Viking Gas Transmission Company212027Great Lakes Gas Transmission L.P.332028ANR Pipeline Company1742028Panhandle Eastern Pipeline Company802029NEXUS Pipeline752033

Properties

DTE Gas owns distribution, storage, and transportation properties that are located in the State of Michigan.  The distribution system includes approximately 20,500 miles of distribution mains, approximately 1,238,000 service pipelines, and approximately 1,352,000 active meters.  DTE Gas also owns approximately 2,000 miles of transmission pipelines that deliver natural gas to the distribution districts and interconnect DTE Gas storage fields with the sources of supply and the market areas.

DTE Gas owns storage properties relating to four underground natural gas storage fields with an aggregate working gas storage capacity of approximately 139 Bcf.  These facilities are important in providing reliable and cost-effective service to DTE Gas customers.  In addition, DTE Gas sells storage services to third parties.

Most of DTE Gas' distribution and transportation property is located on property owned by others and used by DTE Gas through easements, permits, or licenses.  Substantially all of DTE Gas' property is subject to the lien of a mortgage.

Regulation

DTE Gas is subject to the regulatory jurisdiction of the MPSC, which issues orders pertaining to rates, recovery of certain costs, including the costs of regulatory assets, conditions of service, accounting, and operating-related matters.  DTE Gas' MPSC-approved rates charged to customers have historically been designed to allow for the recovery of costs, plus an authorized rate of return on investments.  DTE Gas operates natural gas storage and transportation facilities in Michigan as intrastate facilities regulated by the MPSC and provides intrastate storage and transportation services pursuant to a MPSC-approved tariff.

DTE Gas also provides interstate storage and transportation services in accordance with an Operating Statement on file with the FERC.  The FERC's jurisdiction is limited and extends to the rates, non-discriminatory requirements, and the terms and conditions applicable to storage and transportation provided by DTE Gas in interstate markets.  FERC granted DTE