Increase in energy yield with azimuth different than zero

[Rafael Santos]

Hi,

I performed simulations with different azimuth angles (-10 to 90 degrees, in 5-degrees steps) and surprisingly I got higher annual energy production with most of the azimuth angles that are different than zero (the project is located on the southern hemisphere).

Simulation with Azimuth=0°:

 

 

Simulation with Azimuth=40°:

 

Intuitively, I would think a 0° azimuth would always give me the higher energy yield, which apparently is not so...

Of course, the configuration is exactly the same, except for the azimuth. The modules are fixed, tilted 12°, and bifacial.

Best regards,

Rafael

[dtarin]

No electrical shading loss is showing. If these are bifacial c-Si, you'll want to include electrical effect (modeled according to strings) and then make the comparison.