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2017 Annual Report, Form 10-K and Proxy Statement

MDU Resources, through its regulated energy delivery and construction materials and services businesses, continues Building a Strong America®. Details on the company's financial results and growth efforts are presented in the 2017 Annual Report, Form 10-K and Proxy. (HTML) (PDF)
MDU Resources Year-End 2017 Results Infographic

This infographic summarizes MDU Resources Group’s year-end 2017 results.
2017 Sustainability Report

MDU Resources Group manages its business with a long-term view toward sustainable operations, focusing on how economic, environmental and social impacts help us in Building a Strong America.

Our Utilities

MDU Resources Group's utility companies provide more than 1 million customers with electric and natural gas services in eight states.

WBI Energy has natural gas pipeline and associated systems and services in the Rocky Mountain and northern Great Plains regions of the U.S.

MDU Resources Group has construction materials and contracting operations and construction service operations across the U.S.