One Minute Solar Data Simulation

I was wondering if SAM can simulate output from solar PV at one minute intervals using our own solar data (which is at one minute resolution). Is there any established solar data sets at one minute intervals?
SAM's photovoltaic models and the physical trough model can run with weather data up to one minute resolution. However, at one-minute time steps the models may not accurately represent the thermal characteristics of the system. In general, the model algorithms are most suitable for hourly up to to 10- or 15-minute simulation time steps.
I am not aware of a free source of solar resource data at one-minute resolution.
Best regards,

Paul.

The latest version, SAM 2015.1.30, supports subhourly simulations for the detailed photovoltaic, PVWatts, HCPV, and physical trough models, and will run with a weather file with up to one-minute temporal resolution in the SAM CSV format.

SAM 2014.1.14 supports subhourly simulations with the physical trough model, and requires a weather file in the SMW format.

Best regards,
Paul.

Dear Paul,
Yes. In SAM 2014.1.14, only the physical trough model supports subhourly simulations, and subhourly simulations require the special SMW weather file format. In that and earlier versions, there is a time step setting on the Simulator Options page. That setting is only active for performance models that can run with subhourly weather data -- you have to make sure the setting matches the weather file time step. You will notice that the setting is active for the other CSP models, but we only tested the physical trough model for subhourly simulations. In my quick test with the power tower model and a 15-minute weather file, the simulation failed. The data viewer in SAM 2014.1.14 and older versions does not support subhourly simulations: It only displays the first 8,760 rows of data, so you have to use different software to view the output files.
In the current version (SAM 2015.1.30), SAM determines the simulation time step automatically from the weather file by counting the number of rows in the file. There is no time step setting. The data viewer in this version supports subhourly data, so you can view the data in SAM.
Here are two other threads that should help shed some more light on these topics:
Time Step for SAM Model Simulations
Time Step -- Accuracy of the Simulation
Best regards,

Paul.