Return to ENERGY
Find More Facilities
ENERGY STAR Labeled Buildings & Plants
Facility Profile ENERGY STAR Logo

ENERGY STAR Labeled Building Profile

One South Wacker
One South Wacker
Chicago, IL 60606
Map It!


One South Wacker is a Class A office building owned by Harbor Group International located in Chicago, IL, offering approximately 1,300,000 square feet of rentable space. Built in 1982, One South Wacker houses tenants including accountants, attorneys, trading firms, insurance companies, and consultants, and the building is over 80 percent occupied.

An emphasis on energy management and sustainability is standard practice at One South Wacker. The on-site Harbor Group Management team continually applies no- and low-cost energy efficiency measures including implementing an enhanced preventative maintenance program, completing lighting audits, optimizing HVAC start/stop times, load shedding, engaging janitorial and security staff to turn off unneeded lights, and minimizing heating and cooling in vacant space.

As part of ongoing energy management efforts, several upgrades have been completed. The domestic hot water system was replaced and variable frequency drives (VFDs) installed. Defective sensors on the automation system have been replaced. Retrofits were made to base building lighting to add electronic ballasts and motion sensors, and restroom equipment was replaced with low-flow models. 



Property management communicates with tenants about energy efficiency and sustainability, providing energy-saving tips to help the building maintain its superior performance. The building participated in The Chicago Green Office Challenge and the Change the World, Start with ENERGY STAR campaign, providing free CFLs for tenants to take home, in addition to handouts about energy-efficient lighting.



Please note: Narrative information in this profile has been provided by John Hancock or a representative of this facility. Other building information was verified and submitted to EPA at the time of application. Building energy performance, operating characteristics, and ownership/management may be subject to change over time.

Building Owner:*
John Hancock

Property Manager:*

Year(s) Labeled (Rating):
2007 (80)
2008 (87)
2009 (91)
2010 (87)
2011 (88)
2012 (90)
2013 (90)
2014 (82)
2016 (87)
2017 (87)

Facility Type: Office

Total Floorspace: 1343438 sf

Year Constructed: 1982

Contract Type: None

Technologies Used: