Integration

Solargis data in SAM

How to import Solargis data from SAM

Solargis is able to provide suitable data files for working in SAM. Hourly data in TMY3 format is required in this case. The following parameters are mainly required for the simulations: global horizontal irradiation, diffuse horizontal irradiation, direct normal irradiation, temperature, relative humidity, atmospheric pressure, wind speed and wind direction.

These are the steps to import Solargis TMY data into NREL SAM (tested in version SAM 2015 6.30):

  1. Open a new PV project and select “location and resource”
  2. Then select the option “use a specific weather file on disk” and click browse button
  3. In the browse window select the Solargis TMY SAM supported .CSV file and click open. At this stage, you have finished import of meteo data for a specific geographical site and you can start to simulate the energy output.

Additional notes

  • SAM requires different parameters in comparison to the standard Solargis csv files for PV projects. Please note that when using Solargis in SAM software the option including full weather parameters should be acquired.
  • The TMY3 file format is a comma-delimited text format with the extension .csv that has a different structure from Solargis standard csv files. The first row of a TMY3 file stores data describing the location's name, the geographic coordinates, time zone and elevation above sea level data required for sun angle calculations. The second row stores the column headings showing units for each data element. Rows 3-8762 store weather data elements used by SAM's performance models. Many of the data elements are not used by the SAM performance models. Note. Opening and saving a TMY3 file in Excel can cause formatting changes that renders the file unreadable by SAM's weather file reader.