On November 21st, 2017, the Chicago City Council created the Chicago Energy Rating System with the goals of improving the visibility and transparency of the information reported under the existing Chicago Energy Benchmarking Ordinance (adopted in 2013). The original Energy Benchmarking Ordinance requires large buildings (those 50,000 square feet or greater) to report energy use once per year, with additional data verification required every 3 years. The Chicago Energy Rating System updates from 2017 do not change the reporting requirements, but instead are intended to make the reported information more visible and easier to understand. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]