MDU Construction Services Group provides industry-leading construction services with a focus on safety.

We build powerlines and substations. We excavate, drill and build underground infrastructure. We build infrastructure to bring electricity into buildings and distribute it throughout them, powering data centers, hospitals, commercial buildings, universities and research facilities.

We design, build and install heating, cooling, plumbing and fire suppression systems. We design, manufacture and distribute equipment to build transmission lines. We maintain refineries, build solar power systems and light
bridges, streets and sports arenas.

Video: Who we are

Critical success factors

Safety first

Provide an industry-leading safe and healthy work environment at MDU Construction Services Group, Inc. and continuously improve operational performance.

Customer satisfaction

Dedicate ourselves to understanding and fulfilling our customers’ needs, becoming the preferred provider for services provided.

Financial success

Enhance total shareholder value by improving earnings and returns on invested capital while delivering the best construction value to our customers.

Employee satisfaction

Attract, develop, appropriately train, reward and retain a superior workforce.

ET&D Partnership logo
SAFETY FIRST

ET&D Partnership

MDU Construction Services Group is a member of the Electrical Transmission & Distribution Partnership, a nationwide collaboration with OSHA dedicated to reducing injuries and fatalities in the line construction industry. Many of our employees are active participants on the Partnership’s committees and task teams.

Learn more
MDU CSG

What sets us apart

  • Innovation. Our employees bring innovation to the table through their intellectual capital, experience and expertise, ensuring quality and value for our customers.
  • Collaboration. Our teams work together to deliver projects for nationwide customers in numerous markets. With more than 45 locations across the country, we can meet our clients’ needs wherever they may be.
  • Integrated project delivery. Our operating companies regularly collaborate on projects, tapping into each other’s talents and expertise to exceed our customers’ expectations.
  • Financial strength. Thanks to MDU Construction Services Group’s size and financial stability, we realize reduced rates for bonding, insurance and financing. These efficiencies, combined with reduced equipment costs through supplier alliances, result in savings for our customers.
  • Quality. Our companies attract and retain a highly skilled workforce dedicated to providing a quality product, thanks to our commitment to training, safety and integrity. A highly skilled, safe and dedicated workforce ensures superior results for our customers.

Our parent company: MDU Resources Group, Inc.

MDU Construction Services Group is a subsidiary of MDU Resources Group, Inc., a major natural resources company that provides value-added natural resource products and related services that are essential to energy and transportation infrastructure.

MDU Resources got its start as a small electric utility company in 1924 and has grown into a multi-billion dollar company whose diverse holdings, growth strategy and commitment to integrity have allowed it to consistently post strong earnings and earn the reputation of providing superior shareholder value. The company is headquartered in Bismarck, North Dakota, and has been traded on the New York Stock Exchange since 1948 (NYSE: MDU).

Learn more

Historical timeline

1917

Wagner-Smith Equipment Co., as it is known today, got its start in 1917 as The Charles M. Kelso Company.

1924

MDU Construction Services Group’s parent company was founded in 1924 as a small electric utility serving a handful of farm communities on the border of Montana and North Dakota.

1935

Major league baseball played its first night game at Cincinnati’s Crosley Field. Wagner-Smith, today part of MDU Construction Services Group, installed the stadium lights. President Franklin Roosevelt flipped the switch to turn on the lights by remote from the White House.

1947

Oregon Electric Group, now known as O​EG, Inc., in Portland, Oregon, is founded. Today, it is one of the largest electrical contracting companies in the Northwest.

1957

Loy Clark Pipeline Co. is founded. It was the first pipeline construction company in Oregon and had just 12 employees. Capital Electric Construction Co. is also founded in 1957 in Kansas City, Missouri.

1966

E.S.I., Inc., is founded in Ohio.

1967

Capital Electric Line Builders in Riverside, Missouri, is founded.

1974

Bell Electrical Contractors in St. Louis is founded.

1980

Desert Fire Protection is founded in Las Vegas.

1982

Bombard Electric is founded in Las Vegas.

1983

International Line Builders is founded. Today, the company has locations in Oregon, Washington, Idaho and California.

1985

Our parent company realigns and changes its name to MDU Resources Group.

1997

MDU Resources Group forms a new construction services division, today known as MDU Construction Services Group, with the acquisition of two electric services companies in Portland, Oregon.

2001

Capital Electric, Bell Electrical and ​O​EG join MDU Construction Services Group.

2002

Bombard Mechanical is founded in Las Vegas.

2004

MDU Construction Services Group joins the Electrical Transmission & Distribution Partnership as a founding member.

2005

The company enters the Las Vegas market with the acquisition of Bombard Electric and Bombard Mechanical.

2006

Wagner Industrial Electric, Inc. is formed in May 2006 by merging the industrial electric divisions of two long-standing electrical contractors, Capital Electric Construction Company in Kansas City, Missouri, and The Wagner-Smith Company in Dayton, Ohio.

2007

MDU Construction Services Group acquires Lone Mountain Excavation & Utilities in Las Vegas.

2009

Capital Electric Construction keeps the lights on for the Chiefs, doing the Arrowhead Stadium renovation in Kansas City, Missouri.

2012

Bombard Renewable Energy is named the 13th largest solar contractor in the country, according to Solar Power World’s Top 100 list.

2013

MDU Construction Services Group is ranked No. 11 on the Top 600 specialty contractors list in the United States.

2014

Several MDU Construction Services Group companies in Las Vegas take part in the construction of the LINQ entertainment district, including the High Roller, the tallest observation wheel in the world.

2014

Capital Electric Line Builders completes the biggest transmission line construction project in MDU Construction Services Group history: a 345-kV, double-circuit line stretching 108 miles across Kansas.

2014

MDU Construction Services Group moves up to No. 10 on ENR’s Top 600 Specialty Contractors list.

2015

MDU Construction Services Group ranks No. 8 on ENR’s Top 600 Specialty Contractors list.​

2017

Bombard Renewable Energy, a division of Bombard Electric LLC, ranks 26th out of 500 solar companies in the U.S., per Solar Power World magazine.

2017

MDU Construction Services Group ranks No. 13 on ENR’s Top 600 Specialty Contractors list.​

2018

MDU Construction Services Group ranks No. 11 on ENR’s Top 600 Specialty Contractors list.​

2018

Bombard Renewable Energy ranked No. 13 on Solar Power World’s 2018 Top Solar Contractors list.

2019

MDU Resources Group acquires the assets of Pride Electric in Redmond, Washington.

2019

Wagner Industrial Electric becomes a division of ESI, Inc.

2019

MDU Construction Services Group ranks No. 12 on ENR’s Top 600 Specialty Contractors list. and No. 6 on EC&M's Top 50 Electrical Contractors list.

2020

MDU Resources Group acquires the ​stock of PerLectric, Inc., in Fairfax, Virginia.

2020

MDU CSG moves up to No. 11 on ENR's 2020 Top 600 Specialty Contractors list and No. 4 on EC&M's 2020 Top 50 Electrical Contractors list.