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What is EPW file?


The file extension for energyplus weather data files is .epw. This file stores the current weather information for a city or region. The format of the file includes a header followed by data blocks that are followed by comments in square brackets.

EPW Format details


Full Name EnergyPlus Weather Data Format
Developer U.S. Department of Energy
Category Data Files

Tools that will help you view EPW files


Sometimes you need to quickly preview the contents of a file with the EPW extension. In such a situation, many people decide to find a tool that, according to its creators, can display the contents of the EPW file and many other types of files (All in One Viewer).

Of course, there are such tools. However, it should be remembered that they may display the data contained in the EPW file differently than the application dedicated to handling the EPW file extension. When you cannot afford to have the data of the EPW file displayed different from the original, you should use the applications developed to work with the EPW file.

Below you will find a list of software programs that will help you with this. These software programs will help you view the content of the EPW file, minimizing possible errors that may arise with other tools.


EPW File Viewers

  • Ecotect Analysis
  • EnergyPlus
  • 2 EPW viewers