Error Message on Wind Project

Good day
I am trying to run a simulation on the SAM for a hybrid solar, wind an BESS project in Namaqualand, South Africa. I keep getting the error below:
Could not check hub height compared with resource height. This may indicate problem with your weather file.

When I changed the hub height to a Vestas 164 8MW, I get the error message below:
Complete fail hybrid. 

Simulation complete fail.

May I kindly request that you review our data (attached) and advise how to fix the problem?
I have attached the data file.

Thank you so much.

Warm regards
Prof. Tsitsi Musasike

Hi Tsitsi,

That message indicates there may be a problem with the format of your wind resource file. Please see the "SAM CSV Format for Wind" topic in help for a description of the format.

samrepo.nlr.gov/help/weather_format_csv_wind.html

If you continue to see the message and would like me to help troubleshoot, please attach a copy of the wind file you are using for this simulation.

Best regards,
Paul.

Dear Paul
Thank you very much. Please find attached the file for review.

Warm regards
Tsitsi

Hi Tsitsi,

I was able to run a simulation for both cases in your "TEST 4.sam" file with the "TRY 1.csv" wind resource file, so the wind resource file format appears to be correct.

I tested this in SAM 2025.4.16 in Windows. Are you using a different version of SAM or a different operating system?

Also, I did notice a column in the "TRY 1.csv" wind resource file with the heading "air temperature at 10m-60m (C)". This does not follow the format requirement because it includes two heights above the ground. I would either remove that column from the file because there is already a column for air temperature at 60 meters, or change the height from "10m-60m" to "10m".

Best regards,
Paul.

Hi Paul
The student has adjusted the column, but now can't run the simulation despite the file being practically the same. I attached the file. It says the data records are not enough, however I am certain that there are 8760 rows (not counting the headers!). Any ideas on how to proceed?

Thank you so much.

Warm regards

Hi Tsitsi,

I don't think there is a problem with the weather file itself in this case. There seems to be a problem with SAM's ability to open or read the file. A couple of things to try are putting the weather file in a different folder, or seeing if it will work on a different computer.

Best regards,
Paul.