The ANSI/ASHRAE/IES Standard 90.1-2013 Energy Standard for Buildings Except Low-Rise Residential Buildings (Standard 90.1-2013) incorporated more than 120 addenda to the 2010 standard. These changes significantly fine-tuned the design requirements for code-compliant lighting controls systems, mechanical systems and the building envelope.
The five biggest changes to the lighting control requirements are dedicated to saving energy by turning off or reducing lights and plug-load equipment more quickly when unnecessary or not in use. These requirements also added a tabular format to clarify the specific lighting control requirements by space type.
Standard 90.1-2013 now includes a table that summarizes the minimum lighting control requirements by space type.
Note: for project-specific requirements and interpretation of the changes to lighting and lighting controls requirements within the energy code, please directly consult Standard 90.1-2013 and the building authority having jurisdiction.