The 2015 International Green Construction Code (IgCC) will include the option to use an outcome-based approach when complying with local building energy codes, the first time the IgCC has allowed this method. Previously, building energy codes relied on two main pathways to demonstrate compliance: performance (modeling energy consumption), and prescriptive measures (following code-defined values for individual building components). Both approaches fail to fully account for how buildings use power once they are completed, occupied, and maintained, according to the Institute for Market Transformation (IMT).
PB Topical Ref
