Partner Engineering and Science, Inc.’s Bob Geiger and Joanne Choi discuss Chicago’s new benchmarking ordinance and the requirements for compliance. In September 2013, the Chicago City Council approved the Building Energy Use Benchmarking Ordinance in Chapter 18-4 of the Chicago Municipal Code.  The Chicago Energy Benchmarking Ordinance became effective on September 21, 2013 and requires building owners with over 50,000…