User Guide


Elements is a free, open-source, cross-platform software tool for creating and editing custom weather files for building energy modeling. The goal of the project is to develop a comprehensive, integrated application suitable for handling all of the common tasks associated with weather files.

Elements was developed by Big Ladder Software with the generous funding and collaboration of Rocky Mountain Institute.

Big Ladder Logo       RMI Logo


Major features include capabilities to:

  • Read/write common weather file formats
    • DOE-2 (.bin, .fmt)
    • EnergyPlus (.epw)
  • Browse/edit weather data
    • Smart spreadsheet editor
    • Automatic preservation of psychrometric and solar relationships
    • Tools for bulk data transformation: offset, scale, normalize
    • Copy and paste to/from Excel
    • File header editor
    • IP or SI units
  • Visualize weather data
    • Dynamic, multi-variable line chart (experimental)