Solargis is able to provide suitable data files for working in SAM. Hourly data in TMY3 format is required in this case. The user can select which of the main radiation components (global horizontal irradiation, diffuse horizontal irradiation, direct normal irradiation) will be used during the simulation.
These are the steps to import Solargis TMY data into NREL SAM (tested in version SAM 2017 1.17):
At this stage, you have finished import of meteo data for a specific geographical site and you can start to simulate the energy output.
NREL SAM does not recognize the upload of Solargis standard .csv data format and by default requires TM3 format for the simulation (including DNI parameter). If you have ordered the ‘extended’ Solargis TMY dataset, we would have delivered it also in SAM format along with the Solargis CSV format by default.
However, we are still helping our customers with the possibility to upload their already purchased Solargis ‘basic’ TMY data (without DNI parameter). If you don’t have your Solargis dataset in TM3 format and you need to run a simulation in SAM, please contact our support team at firstname.lastname@example.org
Once the file is uploaded, you will need to apply the modifications recommend by NREL SAM here and select Global and Diffuse Irradiation components to be used for calculations. By making these changes, the user requests the SAM software to do the PV simulation with global (GHI) and diffused (DIF) irradiation parameters (without DNI).
The TMY3 file format is a comma-delimited text format with the extension .csv that has a different structure from Solargis standard csv files: