Error: Azimuth 0 differs Azimuthal Axis performance

Hello SAM team!

I identified today an error in my simulations. I'm simulating Detailed PV - No financial model for Campo Grande, Brazil (weather file from INMET attached) (energyplus.net/weather-location/south_america_wmo_region_3/BRA//BRA_MS_Campo.Grande.Intl.AP.868100_INMET).

My system is over a surface north oriented (azimuth zero), but when I simulate using the azimuthal axis in System Design instead of value 0 in azimuth, the results are different. I read the Help according it and, as presented there, for south equator places, the azimuthal axis is 0, but the results are a bit confusing. Can you help me how to solve this problem? I don't know if SAM is really suited for my simulations, or if I need to use azimuthal axis or azimuth zero for not present bad results and fake performance.

The file is attached in this message.

Thank you in advance!

Luiz

Hello team, 

I´ll have to endorse Luiz's report.
After SAM set accordingly to the standards of a fixed tilt/azimuth system, using a 0° Azimuth and the tilt=local latitude (15°), ie, modules facing north with the local latitude as the tilt, it MUST result in higher energy yield annually than in a 180° Azimuth setting.

And this is not what´s happening. For some reason, it seems that the calculations are being made as if the solar PV is located in the north hemisphere and has a higher generation facing south (180°).

Something is really wrong, 

Even the Monthly energy production graph is showing an opposite result as the expected one. For our region (south of equator), it should have a lower energy yield in the months between May and August (winter solstice), and it´s not what´s happening, as you can check below, with its correspondent system design print: 

Hello there,

Thanks for the usual assistence. 

Here´s the .sam file. 

Regards,

Lester

Hello there,


Thanks for the usual help !
I´m sending attached the .sam file.

Regards,

Lester
-16.688599°,-049.284685°