All racking systems ___.

All racking systems ___.

• A. Point east
• B. Point west
• C. Point toward the sun
• D. Point toward the southern azimuth

Answer: (C)

The key idea here is to maximize the panel’s exposure to sunlight. Racking is the structure that holds PV modules, and aligning those modules toward the sun ensures the surface receives the most solar irradiance, which translates to higher energy output. Pointing toward the sun reduces the angle of incidence losses and helps avoid shading from nearby structures or other modules. While fixing orientation to a specific compass direction (east, west, or a southern azimuth) can be useful in certain locations, those directions are not universally optimal for every site or time of day. In solar-tracking systems, the rack literally follows the sun, but the overarching principle remains: orient the racking to face the sun as much as possible to maximize energy capture.

The key idea here is to maximize the panel’s exposure to sunlight. Racking is the structure that holds PV modules, and aligning those modules toward the sun ensures the surface receives the most solar irradiance, which translates to higher energy output. Pointing toward the sun reduces the angle of incidence losses and helps avoid shading from nearby structures or other modules. While fixing orientation to a specific compass direction (east, west, or a southern azimuth) can be useful in certain locations, those directions are not universally optimal for every site or time of day. In solar-tracking systems, the rack literally follows the sun, but the overarching principle remains: orient the racking to face the sun as much as possible to maximize energy capture.