Wind Resource File - Kauai

  • jtippett
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24 Oct 2023 22:00 #12579 by jtippett
Wind Resource File - Kauai was created by jtippett
Hello, 
I would like to use the SAM Wind Model for Kauai, HI.  However, the Wind Resource File download tool does not find anything for Hawaii.  
Could someone point me in the right direction for how to go about obtaining a Wind Resource File for this area?
Thanks!
John

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  • pgilman
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25 Oct 2023 01:56 #12581 by pgilman
Replied by pgilman on topic Wind Resource File - Kauai
Hi John,

You can use NREL's WIND Toolkit API to download offshore wind resource data for Hawaii:

developer.nrel.gov/docs/wind/wind-toolkit/

The Download button on SAM's Wind Resource page accesses the wtk-download dataset, which does not include the offshore Hawaii data.

There may be other sources of data that I am not aware of.

Best regards,
Paul.

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  • jtippett
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25 Oct 2023 12:03 - 26 Oct 2023 19:23 #12585 by jtippett
Replied by jtippett on topic Wind Resource File - Kauai
Thank you, Paul.   I am new to this whole process of working with an API...steep learning curve!
I am trying to get the first example GET command at developer.nrel.gov/docs/wind/wind-toolkit/offshore-hawaii-download/#examples to work.
 
I got ChatGPT to convert the command to Python
I changed the email in the code to mine.

That gives me the Python code below.  I put it in a file and ran it using Python3 on my Mac.  It generates a 404 error.
The one thing that sticks out to me is that there is no actual HTTP address for the url, it's just a path.

If you have any insight on what I should enter for the server address, (or any other advice) I would be grateful!
- John


___________
import requests

url = "https://??????/api/wind-toolkit/v2/wind/offshore-hawaii-download.json"
params = {
    "wkt": "POLYGON((-130.756145509839060 48.75520578942107,-130.75571635639668 48.75520578942107,-130.75571635639668 48.75485477666326,-130.75614550983906 48.75485477666326,-130.75614550983906 48.75520578942107))",
    "attributes": "winddirection_180m",
    "names": "2017",
    "utc": "false",
    "leap_day": "true",
    "email": "This email address is being protected from spambots. You need JavaScript enabled to view it."
}

response = requests.get(url, params=params)

if response.status_code == 200:
    data = response.json()  # Assuming the response is in JSON format
    # Process the data as needed
else:
    print(f"Request failed with status code {response.status_code}")


 
Last edit: 26 Oct 2023 19:23 by pgilman.

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  • pgilman
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26 Oct 2023 19:35 #12593 by pgilman
Replied by pgilman on topic Wind Resource File - Kauai
Hi John,

You might try constructing a URL to make the request before diving into Python. The example toward the bottom of the API documentation page is a good starting point. You can add "developer.nrel.gov" to the beginning of the example that starts with "api/wind-toolkit/...", and change the email address and key to yours.

You can then paste the URL into your browser, and you'll either get the file you requested or a JSON response with an error message.

Once you have a URL that works, you can then try to get things working in Python.

Best regards
Paul.

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  • pgilman
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31 Oct 2023 22:22 #12607 by pgilman
Replied by pgilman on topic Wind Resource File - Kauai
The different WIND Toolkit API endpoints return data in different text formats. The format SAM recognizes is returned by the following endpoints: 
seasia-wtk-download
vietnam-wtk-download
wtk-download
mexico-wtk-download
offshore-ca-download
philippines-wtk-download

The following, including the Hawaii offshore one use a different format: 
offshore-great-lakes-download
offshore-gulf-of-mexico-download
offshore-hawaii-download
offshore-mid-atlantic-download
offshore-north-atlantic-download
offshore-nw-pacific-download

The "SAM CSV Format for Wind" topic in SAM's Help system describes the format:  samrepo.nrelcloud.org/help/weather_format_csv_wind.htm  

You should be able to edit the Hawaii file or others from the endpoints with the different format to work with SAM.  

Best regards,
Paul.

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