> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/6_alternativeweather/write_epw.md).

# Write EPW

![](/files/-Mihr_oiYcFuGuqfti2U)

![](/files/-Mihr_ojhun12hXTx5jD) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Write%20EPW.py)

Write an EPW object into a .epw file.

## Inputs

* **epw\_obj \[Required]**

  An EPW object such as that exported from the Create EPW component. 
* **folder**

  A directory into which the .epw file will be written. 
* **file\_name**

  An optional name for the .epw file. Default will use the city of the EPW object's location. 
* **run \[Required]**

  Set to True to run the component and write the .epw file. 

## Outputs

* **report**

  Reports, errors, warnings, etc. 
* **epw\_file**

  File path to a .epw that contains all of the data in the input \_epw\_obj.