Day & Zimmermann Awarded Four-Year Maintenance and Modification Contract with Nebraska Public Power District

Extends 11-Year Relationship Between Day & Zimmermann and NPPD 

PHILADELPHIA, PA — June 22, 2015 —   Day & Zimmermann (D&Z), the century-old, family-owned provider of construction and engineering, staffing and defense solutions for leading corporations and governments around the world, announced today that its Engineering, Construction & Maintenance group has been awarded a four-year contract to provide maintenance and modification services for the Nebraska Public Power District at the Cooper Nuclear Station in southeast Nebraska.  Day & Zimmermann has now been under contract with NPPD for the last 11 years.

“We’re proud to extend our decade-long relationship with NPPD and are committed to continue to reduce outage durations and increase productivity at Cooper,” said Michael P. McMahon, President of Day & Zimmermann ECM.  “We’re dedicated to achieving the highest levels of safety performance and continuing to look for innovative ways to provide value.”

“Our work with NPPD has been rewarding for us and we look forward to sharing industry best practices that will help Cooper achieve sustainable operational excellence,” said Guy Starr, President of DZ Atlantic, the company’s open shop construction unit.. 

NPPD is Nebraska’s largest electric utility, serving 600,000 people with a diverse mix of generating facilities, including nuclear, coal, wind, and hydro.  Cooper Nuclear Station is the largest single-unit facility in the state.  It has a capacity of 810 megawatts and accounts for approximately 30% of NPPD’s generation resources.

D&Z is one of the nation’s leading providers of total plant lifecycle solutions for the power, process and industrial markets and has consistently been ranked as the #1 operations and maintenance contractor in the U.S. power industry by Engineering News-Record in its Top 400 Contractors Sourcebook.


Day & Zimmermann is a century-old, family-owned company whose 23,000 employees specialize in construction & engineering, staffing and defense solutions for leading corporations and governments around the world. Operating from more than 150 worldwide locations with 2.5 Billion USD in revenue, Day & Zimmermann is currently ranked as one of the largest private companies in the U.S. by Forbes. Founded in 1901 and headquartered in Philadelphia, PA, our first work was to develop "Betterment Reports" that helped modernize American factories. Today, we are still in the business of betterment -- maintaining the nation's power infrastructure, protecting American freedoms and driving technological advancements around the world. We do what we say.®