The University of Iowa

Chilled Water Plant

The University of Iowa officially transferred management of its utility system to ENGIE North America on March 11, 2020. The 50-year partnership with ENGIE and Meridiam will help fund and support the University's strategic plan and core missions of teaching, research, and scholarship. More information is available here. Updates to staff directories and web pages are underway.

Chilled Water Plant

Chilled Water Plant

The university's first chilled water plant opened in 1970 and was located in what is now Hospital Ramp 3. The system has expanded to include four plants and three satellite chillers for a total capacity exceeding 40,000 tons.


The most common use of chilled water is air conditioning for campus buildings as well as temperature control for computers and research projects.


Utilities Graphic

How it Works

Underground piping connects nearly 60 buildings to the chilled water plants. Water is pumped from the plants to the building through supply lines and warm, used water flows back to the plants through return lines creating a closed loop system.