Full format name of files that use EPW extension is EnergyPlus Weather Data Format. EnergyPlus Weather Data Format specification was created by U.S. Department of Energy. Files with EPW extension may be used by programs distributed for Windows platform. Files with EPW extension are categorized as Data Files files. The Data Files subset comprises 1326 various file formats. Users are advised to use Ecotect Analysis software for managing EPW files, although 1 other programs can also handle this type of file.
Below is a table that list programs that support EPW files. EPW files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.
Problems with accessing EPW may be due to various reasons. Fortunately, most common problems with EPW files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The following is a list of guidelines that will help you identify and solve file-related problems.
Problems with opening and working with EPW files are most probably having to do with no proper software compatible with EPW files being present on your machine. This one is an easy one. Select Ecotect Analysis or one of the recommended programs (for example, EnergyPlus) and download it from appropriate source and install on your system. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download Ecotect Analysis installer in the most secured manner, we suggest you visit website and download from their official repositories.
If you already have Ecotect Analysis installed on your systems and EPW files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. The reason that Ecotect Analysis cannot handle files with EPW may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Ecotect Analysis.
After installing Ecotect Analysis (the most recent version) make sure that it is set as the default application to open EPW files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.
Change the default application in Windows
Change the default application in Mac OS
Should the problem still occur after following steps 1-3, check if the EPW file is valid. Problems with opening the file may arise due to various reasons.
If the EPW is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the EPW file is indeed infected follow the instructions below.
If you obtained the problematic EPW file from a third party, ask them to supply you with another copy. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. When downloading the file with EPW extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.
Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the EnergyPlus Weather Data Format file.
If the systems has insufficient resources to open EPW files, try closing all currently running applications and try again.
Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with EnergyPlus Weather Data Format file. It may be the case that the EPW files work properly with updated software that addresses some system bugs.
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