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System Advisor Model (SAM)
EnergyPlus™ is a whole building energy simulation program that engineers, architects, and researchers use to model both energy consumption and water use in buildings.
LK (Language Kit) is a simple but powerful scripting language that is designed to be small, fast, and easily embedded in other applications. The core LK engine, including lexical analyzer, parser, compiler, and virtual machine is only dependent on the Standard C++ Library (STL), making it extremely lightweight and portable.
SAM Simulation Core (SSC) contains the underlying performance and financial models for SAM
HPXML to Home Energy Score Translator
Toolkit for working with RADIANCE for the ray-trace modeling of Bifacial Photovoltaics
PV Degradation Analysis Tools in Python
DiTTo is a Distribution Transformation Tool that aims at providing an open source framework to convert various distribution systems modeling formats.
OpenStudio is a cross-platform collection of software tools to support whole building energy modeling using EnergyPlus and advanced daylight analysis using Radiance.
OpenStudio Measures for modeling residential buildings.
automated docker build repo for openstudio
OpenDSSDirect.py is a cross-platform Python package implements a "direct" library interface to OpenDSS.
Modeling the existing building stock (residential and commercial) using OpenStudio/EnergyPlus.
Data structures in Julia to enable power systems analysis
Energy Rating Index (ERI) calculation via OpenStudio/EnergyPlus.
The OpenStudio Server is a docker or AMI deployable instance which allows for large-scale parametric analyses of building energy models using the OpenStudio SDK in the form of OpenStudio measures.
Nginx docker container image
EP-Launch is a cross-platform GUI application designed to assist users of EnergyPlus when running their simulations and auxiliary workflows.
Open source API management platform
Examples of using the HSDS Service to Access NREL WIND Toolkit data
Mirror of the master Radiance cvs source repo, used for the creation of Radiance installers for the NREL OpenStudio project
The Parametric Analysis Tool (PAT) is part of the OpenStudio collection of software tools.
WEX, which is short for WxWidgets Extensions, is a cross-platform library of graphical user interface tools that extends the popular open-source project WxWidgets. WEX includes many features including the powerful DView program (https://github.com/NREL/wex/wiki/DView), which provides an easy-to-use way to visualize complex time series data.