The 3.0.1 version of BEopt is available as a free download on our website. The following versions: 2.8, 2.5 and 2.4 were the most frequently downloaded ones by the program users. The actual developer of the free software is NREL. This PC program can be installed on 32-bit versions of Windows XP/7/8/10/11. The software lies within Photo & Graphics Tools, more precisely 3D Design. The program's installer file is commonly found as BEopt.exe.
From the developer:
BEopt (Building Energy Optimization) is a program for evaluating residential building designs and identifying methods for energy savings. It can be used to analyze both new construction and existing home retrofits, as well as single-family detached and multi-family buildings, through evaluation of single building designs, parametric sweeps, and cost-based optimizations.
You may want to check out more software, such as VFDS, DesignCAD Express or progeCAD 2008 Smart!, which might be similar to BEopt.