Existing API Users: Update any developer.nrel.gov references in your code to developer.nlr.gov. The previous developer.nrel.gov domain will experience scheduled service disruptions beginning May 1, 2026, and it will be shut down on May 29, 2026.
Learn more about the domain transition.
Buildings
Services related to energy efficiency and the use of renewable technologies in residential and commercial buildings.
Building Component Library
Access energy data on individual components or energy conservation measures for buildings. This data can be used to create building energy models.