TREAT is winner of the prestigious R&D 100 award and still the only energy audit software approved by the DOE for all residential housing types – including multifamily. TREAT is market tested, with thousands of users enjoying accurate results for over a decade of supporting whole house energy audits. TREAT 3.4 is RESNET accredited. With thorough building material libraries, single-family and multifamily versions, and the ability to project savings from combined retrofits, TREAT is a comprehensive and flexible software platform for your energy audit efforts. TREAT features onboard SUNREL energy modeling, dynamic links to local weather logs, a unique model “true-up” feature, and concise energy savings reports to ensure that projected energy savings are reliable and that contractors convert retrofit sales with every house call.

CONTAM is a multizone airflow and contaminant transport software. CONTAM 3.2 is the latest version of the software based upon the original work by James Axley and George Walton during their time at NIST. The most recent changes include the ability to couple with energy analysis software TRNSYS and EnergyPlus.

An interactive design environment for building energy evaluation and optimization.

gEnergy brings building simulation to the cloud, using all the features of EnergyPlus on the web, accessible any time, any where. Using on-line web collaboration, you can work with, train and support your colleagues and customers in the development of EnergyPlus models. With rich graphical reports, hyperlinked commenting, model versioning, HVAC graph editing, the ability to import both gbXML and IDF models, and many other features, gEnergy is a powerful EnergyPlus-based simulation tool for you and your business. Find out about gEnergy’s features and functionality.

BlueSol is a software for the design of photovoltaic systems

Parametric analysis is often used for exploring design options and identifying the relationship between design parameters and performance. The jEPlus tool has been developed specifically for performing complex parametric analysis with EnergyPlus. It provides a GUI for defining design parameters, editing models, manage simulation runs, and collecting results. With the GUI, hundreds of thousands of simulation cases may be created in the matter of minutes.

DIAL+ is a very intuitive suite of tools dealing with the optimization of energy loads on the room scale. DIAL+Lighting allows to simulate Daylighting as well as Electric Lighting (Radiance® simulations). It is linked to another simulation module (DIAL+Cooling) that allows to perform dynamic thermal simulation.

DIAL+ is a very intuitive suite of tools dealing with the optimization of energy loads on the room scale. DIAL+Cooling allows to perform dynamic thermal simulation and natural ventilation calculations. It is linked to another simulation module (DIAL+Lighting) that allows to simulate Daylighting as well as Electric Lighting (Radiance® simulations)

Dynamic energy simulation tool

The nation's largest dataset of information about the energy-related characteristics of commercial and residential buildings.