BEopt
NREL (US Department of Energy)
Download from the vendor
www.nrel.gov
NREL’s BEopt evaluates designs of residential buildings, single-family and multi-family, for new construction and retrofits. You define the house and options such as insulation, windows and HVAC systems, and the program runs EnergyPlus simulations and shows the lowest-cost combinations for each level of energy saving. Suited to energy consultants and building services designers. Limitations: it runs on Windows only, climate and cost defaults are tailored to the US, and the current version is labelled beta.
Ratings & Reviews
| Licence type | Completely Free |
|---|---|
| Licence terms | Software from a US national laboratory (NREL), downloadable free from the NREL site at no cost. It is closed source, and the download page shows no further licence terms or usage restrictions. The current version (3.0.1) is a beta from 2023. |
| Platforms | Windows |
| Engineering field | Architecture, Mechanical Engineering |
| Tool type | Simulation & FEA |
| Vendor site | www.nrel.gov |
This link goes to the vendor site. EngiFree hosts no installers and distributes no cracked versions.
Last verified: 2026-10-05
