Rulemaking to adopt the 2024 International Energy Conservation Code without any state-level amendments required.

Minnesota House Bill HF3987, introduced on March 5, 2026, mandates that the state adopt the 2024 International Energy Conservation Code (IECC) without any state-specific amendments. This means Minnesota would implement the IECC's standards for energy efficiency in building construction exactly as they are, aligning the state's building codes with national standards. The bill also sets ambitious energy reduction targets: an 80% reduction in annual net energy consumption for commercial buildings by 2036 and a 70% reduction for residential buildings by 2038, using defined national baselines. Additionally, it establishes a structured six-year review cycle for model codes, with a two-year adoption window, and emphasizes outcome-oriented code language focusing on energy performance rather than specific construction methods or materials.

Supporters of HF3987 argue that adopting the 2024 IECC without amendments will streamline the building code process, reduce confusion among builders, and ensure Minnesota's construction practices are in line with national energy efficiency standards. They highlight that the bill's clear energy reduction targets and structured review cycles will provide a predictable framework for the construction industry, fostering innovation and encouraging the adoption of new technologies. Proponents also emphasize that the outcome-oriented approach will allow for flexibility in achieving energy efficiency goals, potentially leading to cost savings for both builders and consumers.

Critics of HF3987 express concerns that adopting the 2024 IECC without state-specific amendments may not account for Minnesota's unique climate and building needs. They argue that the one-size-fits-all approach could lead to increased construction costs and may not be suitable for all types of buildings in the state. Opponents also worry that the ambitious energy reduction targets could place undue pressure on the construction industry, potentially leading to higher costs for consumers. Additionally, some critics question whether the outcome-oriented approach will provide sufficient guidance to ensure consistent implementation of energy efficiency measures across the state.