Hi Hussein,
SAM will run simulations with weather data time steps of up to one-minute.
The NSRDB accesses different datasets that have different time resolutions. For example, for locations in the Americas, 10-, 30-, and 60-minute data is available. For locations in Europe, Africa, and the Middle East, data is available in 15-, 30-, and 60-minute resolutions, and for locations in Asia, data is available in 10-, 30-, and 60-minute resolutions.
To access these datasets, check
Advanced download on the Location and Resource page. You can also find information about other sources of data on the SAM website at
sam.nrel.gov/weather.
Best regards,
Paul.