While a majority of codes are based on the IECC, 90.1 is recognized by the U.S. A majority of states rely on model energy codes such as ASHRAE/ANSI/IES 90.1 and the International Energy Conservation Code (IECC). For lighting, the new version adjusts power allowances, adjusts the definition of alterations, adds horticultural lighting, and updates several control requirements.Ĭommercial building energy codes regulate the designed energy efficiency of nonresidential buildings. This edition includes an expanded scope for building sites, a minimum prescriptive requirement for onsite renewable energy, and other major additions appearing for the first time in a U.S. The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) and the Illuminating Engineering Society (IES) recently published ANSI/ASHRAE/IES Standard 90.1-2022, Energy Efficiency Standard for Buildings Except Low-Rise Residential Buildings. This is my April 2023 contribution to the Lighting Controls Association.
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