EX-21 8 a2024ex21.htm SUBSIDIARIES OF MDU RESOURCES GROUP, INC.

MDU RESOURCES GROUP, INC.

List of Subsidiaries

(effective December 31, 2024)

Subsidiaries			Formation Jurisdiction
Cascade Natural Gas Corporation			Washington
CEHI, LLC			Delaware
Centennial Holdings Capital LLC			Delaware
Fidelity Exploration & Production Company			Delaware
FutureSource Capital Corp.			Delaware
Intermountain Gas Company			Idaho
InterSource Insurance Company			Vermont
MDU BenefitCo II, Inc.			Delaware
MDU BenefitCo, LLC			Delaware
MDU BPT BenefitCo, Inc.			Delaware
MDU Energy Capital, LLC			Delaware
Montana-Dakota Utilities Co.			Delaware
Prairie Cascade Energy Holdings, LLC			Delaware
Prairie Intermountain Energy Holdings, LLC			Delaware
WBI Canadian Pipeline, Ltd.			Federally Chartered
WBI Energy Midstream, LLC			Colorado
WBI Energy Transmission, Inc.			Delaware
WBI Energy, Inc.			Delaware
WBI Holdings, Inc.			Delaware