Twenty-three addenda to ANSI/ASHRAE/IES Standard 90.1-2013, Energy Standard for Buildings Except Low-Rise Residential Buildings, are open for public comment. Addendum "ch" proposes new set of interior lighting power densities limits for both building area and space by space compliance paths. Also open for public comment is addendum "br", which was developed in response to publication of ANSI/ASHRAE Standard 169-2013, Climatic Data for Building Design Standards.