Mission-critical resiliency is of the utmost importance in today’s world. Modern data centers must recover from network failures in milliseconds to have a near zero impact in a broad spectrum of industries. Power and data cabling needs in these facilities require in-depth knowledge and precise planning an execution.  REX’s long history of success in this arena has made us a critical partner for many of the largest data center facilities in the region.

We are proud to have met the extremely high standards of the most scrutinizing mission-critical clients.  Our experience and depth of knowledge has led to many successful partnerships.


Focus Areas

New Construction

Our field and Project Management teams have extensive experience constructing new data centers. Whether stand-alone centers or part of a corporate headquarters facility, REX has the experience to deliver a mission-critical project.

Upgrades and Retrofits

As underlying technology shifts, so too do the power and cabling needs of existing data centers. Our teams are engaged in staged and full-retrofit projects for existing data centers and those undergoing expansion.

In-House Service

Power and data cabling requirements at heavily-trafficked data centers can change on a daily basis. REX has a seasoned team of professions that work in-house at many of the largest facilities to manage and upgrade electrical and cabling infrastructure as needed, aiding in speed-to-market and overall efficiency.

Endorsements from our Clients

REX’s constant and consistent overseeing of this project from the onset provided the coordination that was necessary to meet our deadlines.



~ Steven G. Wasilewski, Senior Project Manager, Turner Construction Company

Prime recently moved to its Chicago headquarters to a new and better space, and could not have done so without (REX personnel)’s efforts. In the 11th hour, we had less than a month to plan and execute the entire move. The most beautiful part is that REX was able to execute this work in the three-week window that we were left with.

~ Steve Crowley, Prime International Trading, Ltd., Chicago, IL

We always get compliments on how nicely the wiring is done and the professional job REX did on the building in general. REX electric completed on the time frame we needed and everything was done with the utmost professionalism.


~ Paul Whiteside, Chief Information Officer, Wine Sergi Insurance, St. Charles, IL