Mounting solar panels on the wall is often referred to as a wall mounted solar system.

Wall-mounted solar panels are usually mounted on a south-facing wall.

It is illogical to mount solar panels on a wall that is not south facing, as wall mounted systems have already suffered setbacks in generating electricity due to the slope. Because wall-mounted solar panels are vertical or have a high slope even when tilted, they absorb the most energy when the sun is lowest in the sky.

So you need to selectively place wall-mounted systems to maximize energy absorption. You can install the solar panel modules parallel to the wall, sloping away from the wall or as a pendant canopy. Either of these locations will give your solar panel system a much higher natural slope than a roof or ground mounted system.
The naturally steep slopes of wall mounted solar panels require special hardware to install and secure. They are more difficult to hold than ground- or roof-mounted solar panels, which lie flat or have a slight slope. Because wall-mounted systems are defying gravity to stay upright, a secure hold is essential to avoid displacement, damage, and life-threatening accidents.
You can choose the following ways to install, the required accessories are end clamp, middle clamp and rail clamp, these accessories can firmly fix the solar panel.