National Green Building Standard Analysis

Published Tuesday, July 31, 2012

This report details the proposed point structure for the prescriptive approach of the energy efficiency chapter of the 2012 NGBS. This proposed point structure was developed with support from the BA house design and simulation protocols. The source energy was calculated for both the reference home and the proposed house in each specific climate. This analysis also compared the simulated energy performance of a home designed to meet the revised NGBS Chapter 7 at the Gold level with reference to the 2010 BA Benchmark using the BA House Simulation Protocols. The results of modeling various houses in multiple climate zones indicate that the range of energy savings for the designs is 40%–50% for the Gold level. This range aligns well with BA program energy savings goals of 30%–50% whole-house energy savings.

Download the report