P50/P90 data

I´ve a historical data of 10 years from the year 2000 to the year 2019 of GHI, it is enough to do a p50 / p90 analysis or should i have data of temperature and data of DHI and DNI too.

Hi Sergio,

SAM's solar model require more than just the GHI data. Please see the "Weather Data Elements" topic in SAM's Help system (under "Weather Data" in the table of contents). The table there shows what data is required for each performance model in SAM. You can also refer to the "SAM CSV Formats for Solar" topic for a description of the weather file format.

Best regards,
Paul.