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About Us

MDU Resources provides essential products and services through its regulated energy delivery and construction materials and services businesses.

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 grew our company by developing businesses around our expertise.

Today, MDU Resources has operations, customers and employees across the country. We have approximately 16,000 employees during peak construction season and conduct business in nearly every state.

We are 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.

Line construction crew working on the ground

We are Building a Strong America®

Strong infrastructure is the heart of the U.S. economy. It is the natural gas 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.

0 Bcf/Day
Natural Gas Transportation Capacity
0 Million
Utility Customers
4 th
Largest Specialty Contractor, According to Engineering News-Record
0 Billion
Tons of Aggregate Reserves
ready-mix crew working on roadside

Providing Consistent Shareholder Value

We have paid dividends uninterrupted to our shareholders for 84 years. We have increased dividends 31 consecutive years, a feat accomplished by only about 80 other U.S.-listed companies. Our commitment to paying dividends is reflected in our membership in the S&P High-Yield Dividend Aristocrats index.

Regulated Energy Delivery

Electric and Natural Gas Utilities

Our utility companies serve more than 1.16 million customers across eight states.

Pipeline

WBI Energy provides natural gas transportation through approximately 3,800 miles of regulated pipeline systems as well as underground natural gas storage services with the largest gas storage field in North America.

Construction Materials and Services

Construction Materials

Knife River is a Top 10 producer of aggregates in America, has approximately 1.2 billion tons of aggregate reserves and employs more than 5,000 people during peak construction season.

Construction Services

MDU Construction Services Group is one of the largest electrical contractors in the United States, with more than 7,000 employees.

COMPANY HISTORY

1924
Company Begins
The company is incorporated and begins acquiring small electric utilities in eastern Montana.
Old substation
1924
1927
Natural Gas
A subsidiary company, now known as WBI Energy, is formed to look for natural gas and build pipelines to transport the gas so it can be used to fuel electric generating stations.
Vintage crew working dirt
1927
1935
One Company
All subsidiaries merge under a single corporation, Montana-Dakota Utilities Co.
Trucks parked in 1935
1935
1945
Coal For Fuel
The company acquires a coal-mining operation to supply fuel for its electric generating stations.
Coal mining crane
1945
1948
On The NYSE
The company common stock begins trading Sept. 20, 1948, on the New York Stock Exchange. At the time, the company had assets of $59 million and total revenues of $11 million.
Employees standing by old truck
1948
1968
On The Move
The company moves its corporate headquarters from Minneapolis to Bismarck, North Dakota, to be located closer to the company’s primary operations.
New corporate headquarters building in Bismarck
1968
1985
New Name
The corporation realigns under a new name, MDU Resources Group, Inc., to better reflect its expanding operations.
Original MDU Resources logo
1985
1992
Rock On!
MDU Resources uses its coal-mining expertise to venture into aggregate mining, acquiring its first operation to get into the construction materials and mining business.
Aggregate pile
1992
1997
Utility Services
Expanding on the company’s extensive utility experience, MDU Resources launches a construction services business that provides a variety of utility, electrical wiring and mechanical services.
bucket trucks next to transmission line
1997
2000
In Minnesota
MDU Resources expands its utility operations into Minnesota with the acquisition of Great Plains Natural Gas Co., a natural gas distribution company.
Employees standing by truck
2000
2001
Still Rocking!
MDU Resources sells its coal operations, putting its mining focus on its aggregate-based construction materials business.
Knife River ready-mix truck
2001
2007
In Oregon and Washington
MDU Resources expands its utility operations to the West Coast with the acquisition of Cascade Natural Gas Corporation, which provides natural gas service to customers in Oregon and Washington.
Employees standing by truck
2007
2008
In Idaho
MDU Resources grows its utility operations again with the acquisition of Intermountain Gas Company, which provides natural gas service to customers in Idaho.
Technician working by service truck
2008
2009
Fortune 500
MDU Resources is listed on the Fortune 500 for the first time.
2009
2010
Wind Projects
Montana-Dakota Utilities has two wind projects, one in Montana and one in North Dakota, become operational.
Wind turbines on the prairie
2010
2015
Exit E&P
MDU Resources exits the oil and gas exploration and production business.
2015
2020
Stock Dividends Increase
MDU Resources increases its stock dividend for the 30th consecutive year. The company has been paying dividends uninterrupted since 1937.
2020
2021
31 Years of Dividend Increases
MDU Resources increases dividends for the 31st consecutive year.
2021
2021
Fortune 500
MDU Resources is listed on the Fortune 500.
2021