Skip to main content


Showing results 1 - 1 of 1

Energy and Energy Cost Savings Analysis of the 2018 IECC for Commercial Buildings

Document Number: PNNL-28125
Document Type: Analysis
Publication Date:

This report provides an assessment as to whether new buildings constructed to the commercial energy efficiency provisions of the 2018 IECC would save energy and energy costs as compared to the 2015 IECC. The Commercial Energy Efficiency chapter in the 2018 IECC allows users to either follow the provisions in the IECC or use Standard 90.1-2016 as an alternative compliance path. PNNL also compared the energy performance of the 2018 IECC with the corresponding Standard 90.1-2016 to help states and local jurisdictions make informed decisions regarding model code adoption.