NSRDB V4.0.0 data (1998-2023) is now available from new NREL Developer API endpoints:

https://developer.nrel.gov/docs/solar/nsrdb/nsrdb-GOES-tmy-v4-0-0-download/

https://developer.nrel.gov/docs/solar/nsrdb/nsrdb-GOES-aggregated-v4-0-0-download/

SAM's Advanced Downloads option can access these endpoints, but the direct download from the Location and Resource page still accesses the older V3.2.2 (1998-2022) API endpoint.

Note there is an "aggregated" and "conus" endpoint. The latter seems to be a subset of the former, but need to determine the correct endpoint to use.

To Do:

• Update NSRDB download code to access V4.0.0 endpoint
• Spot-check V4.0.0 files for issues
• Test for locations around the world