This program in the U.S. Department of Energy (DOE) sets out efficiency codes adopted at a state level. In this program, an estimated 75% of U.S. buildings will be new or renovated by 2035. Building energy codes ensure they use energy efficiently and reduce energy costs over the life of the building. Through this program, DOE conducts the following: coordinates with stakeholders to improve energy codes, including builders, trades, architects, engineers, building officials, and a variety of other energy professionals; provides technical assistance to support effective energy code implementation and reduce compliance burden across states and local jurisdictions; reviews updated model energy codes, such as the International Energy Conservation Code and ASHRAE Standard 90.1, to ensure energy efficiency and performance; tracks the status of energy code adoption and assesses the savings impacts of model energy codes; administers a help desk to assist practitioners with questions about energy codes.