P50/P90 simulation error

when I try to do a P50 / P90 simulation with my historical data I get the following error "Year 2010: exec fail(pvwattsv7): could not determine timestep in weather file" its the same in the rest of the years but I have the required data according to the SAM manual, I attach one year of my historical data

Hi Sergio,

The file you sent has several semicolons at the end of each line that may cause problems for the weather file reader. Please use a text editor or other software to remove the semicolons.

Because the file contains GHI and DNI data, it will not work with PVWatts, which requires DNI and DHI data. You could use the data with the Detailed Photovoltaic models if you change the Weather File Irradiance Data option on the Location and Resource page:



Best regards,
Paul.