A strong infrastructure is the heart of the American economy. It is the natural gas, oil and electricity that power business, industry and our daily lives. It is the pipes and wires that connect our homes, factories, offices and stores to bring them to life. It is the transportation network of roads, highways and airports that keeps our economy moving. Infrastructure is our business.

We provide essential products and services through our two lines of business:  regulated energy delivery and construction materials and services.  

Our company was founded in 1924 as a small electric utility serving a handful of farm communities on the border of Montana and North Dakota. We realized early the value of delivering a variety of services, and we grew our company by developing businesses around our expertise. 

Today, we are a multibillion-dollar corporation with most of our businesses headquartered in Bismarck, N.D., but operations and customers across the country. MDU Resources is the largest publicly traded company headquartered in North Dakota.  Our stock has traded since 1948 under the symbol MDU on the New York Stock Exchange.