ASHRAE STD 209: 2018 [pdf]

ASHRAE Standard 209-2018 – Energy Simulation Aided Design for Buildings except Low-Rise Residential Buildings (ANSI Approved)

ASHRAE Standard 209 describes a methodology to apply building energy modeling to the design. The standard was created to define reliable and consistent procedures that advance the use of timely energy modeling to quantify the impact of design decisions at the point in time at which they are being made.

ANSI/ASHRAE Standard 209-2018