Re: Issue when converting an EPW file to WTH file

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Buddila Wijeyesekera

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Sep 2, 2025, 7:19:54 AM (8 days ago) Sep 2
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Hi everyone.

I am currently trying to convert the energy plus weather files (epw) to contam weather file format (.wth). But there seems to be an error and data loss in one of the timestep, I tried both with DST checked in  and unchecked yet the issue persist in both the instances. I have attached the error. I'd appreciate it if you could signpost/direct me to a resource to find a solution to this error or your help is greatly appreciated as well. I have already gone through contam weather file creator 2.0 documentation but cannot seem to get around the solution for this. 

Kind regards 
Buddila 


WTH error in timestep 010000.png

William Dols

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Sep 2, 2025, 9:23:27 AM (8 days ago) Sep 2
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Please share the original EPW file, and I will look into the issue.
- Stuart

Buddila Wijeyesekera

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Sep 2, 2025, 12:09:43 PM (8 days ago) Sep 2
to CONTAM, William Dols, buddila...@gmail.com
Hi Stuart 
Attached herewith the original EPW file as requested. Greatly appreciated  
Best wishes 
Buddila 

IRL_Dublin.039690_IWEC.epw

Dols, William Stuart (Fed)

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Sep 2, 2025, 2:38:17 PM (8 days ago) Sep 2
to Buddila Wijeyesekera, CONTAM

Buddila,

The problem is in the field that provides the minutes for the date/time of each record.

The EPW file has minutes equal to 60 instead of 0.

 

Changing these values to 0 eliminates the problem.

I have attached the corrected EPW file and WTH file generated from it.

 

- Stuart

dublin-fix-minutes.epw
dublin-fix-minutes.wth
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