Public Comments Requested on the 2030 International Energy Conservation Code®

The ICC Board has established a new framework for developing the 2030 International Energy Conservation Code® (IECC®) that moves its content into two documents, the IECC and IECC Expanded. This split ensures that ICC continues to develop energy codes that meet the varied needs of jurisdictions in the U.S. and around the globe.    

The intent of the IECC is to establish minimum requirements for the energy-efficient design and construction of buildings, focused on initial construction costs and the operational energy performance of the building. 

The intent of the IECC Expanded (IECCX) is to provide additive requirements that provide market-driven, enforceable requirements that achieve a reasonable level of energy efficiency that is safe, technologically feasible, and life cycle cost effective, considering economic feasibility, including potential costs and savings for consumers and building owners, and return on investment.  

The IECC Expanded may include optional or mandatory provisions incorporating additional energy efficiency and greenhouse gas reduction resources and provisions that lead to achievement of zero energy buildings. The IECC Expanded will provide reasonable compliance options for all energy sources in common use, while allowing requirements to reflect evolving technologies and practices.   

To view the proposed 2030 IECC/IRC Chapter 11/IECC Expanded (IECCX) Scope and Intent draft document, click here.  

How to Submit Public Comments 

We welcome your comments on the proposed 2030 IECC/IRC Chapter 11/IECC Expanded (IECCX) Scope and Intent draft document. Please submit your comments through this form by 11:59 pm Pacific Time on February 15, 2026.