For fifty years, Unit 1 at the D.C. Cook Nuclear Plant has contributed to the innovation of electricity generation technology. The plant, which saw Unit 1 go into operation in 1975, contributes to over 2100 megawatts of produced generation, helping to ensure reliable power for customers.

Located in Bridgman, Mich., the Cook Plant is powered by two units, with Unit 1 producing 1,120 MW of generation, and the second unit, beginning operation in 1978, producing 1,240 MW. The energy these units generate consistently accounts for more than 70% of the company's total generation. 

Today, just under 1,000 full-time employees work at the Cook Plant. To celebrate the work done over the last fifty years, employees, past and present, gathered for a “sweet” celebration on the plant’s anniversary date.

"I&M would like to congratulate these employees, current and retired, who have shown dedication to service during Cook's fifty years of operation," said Steve Baker, I&M president and chief operating officer. "Their commitment to doing safe, innovative work, as well as their attention to serving our communities, is apparent and a true testament of our entire organization."

The Cook Plant has also received numerous Tip Industry Practice (TIP) Awards from the Nuclear Energy Institute including "Innovative Solutions During Turbine Restoration" in 2010 and "Virtual Simulation Technology used to Enhance Training" in 2013. The latest award was received in 2023 for a "Solid State Protection System (SSPS) Upgrade" project.

In addition to day-to-day operations, the Cook Nuclear team takes pride in serving its southwest Michigan community. This is demonstrated through numerous employee-led initiatives as well as the Heart of Cook Grant Program, which supports initiatives surrounding education, community vitality, housing and more. Founded in 2004, this program has awarded more than $1.2 million in grant dollars for the community.