Energy Plus 8.2.0 software
EnergyPlus, the simulation engine used within the ACCIS framework, is an
open-source BES software developed by both the Lawrence Berkeley
National Laboratory and the U.S Department of Energy. It is used by
engineers, architects, and researchers to model both energy consumption
and water use in buildings. This software is a console-based program
which reads inputs and writes outputs to text files. It was originally
written in FORTRAN programming language; however, it is written in C++
since version 8.2.0. This software and its programming language are
difficult to understand, so some graphical user interfaces, such as
DesignBuilder or OpenStudio (33), have been developed to be used by
people with no programming experience.