This research summarizes the energy savings attributable to the adoption of ASHRAE 90.1 2022 for new commercial construction and IECC 2024 for new residential construction in New Jersey.

The project objective is to predict building-level energy savings by estimating annual construction trends, compliance rates, and market adoption for new commercial and residential construction in New Jersey during Triennium 3.

This memo outlines the anticipated energy savings for New Jersey resulting from the adoption of ASHRAE 90.1 2022 for new commercial buildings and IECC 2024 for new residential buildings in a future three-year period. The analysis projects these savings by assessing current construction patterns, the rate at which buildings adhere to new codes, and how widely these technologies are adopted in the market. The study’s methodology involves calculating various levels of savings, incorporating compliance rates and a net-to-gross ratio that adjusts for increasing market adoption. Key assumptions are based on historical construction data from New Jersey and prototype building models from the U.S. Department of Energy (DOE). The study also quantifies uncertainty by exploring different scenarios.