The next step is system design. Solar professionals calculate the required number of panels, inverter capacity, mounting arrangement, cable specifications, and protection equipment. The design should take into account current electricity consumption as well as possible future requirements. For commercial and industrial properties, electricity-load patterns are especially important because businesses may consume significantly more electricity during working hours. A well-designed solar system can be aligned with these consumption patterns to improve the use of generated electricity.

Solar panels are one of the most visible components of a solar installation. They are generally mounted on strong structures that hold the panels at a suitable angle and orientation. The mounting structure must be designed to withstand local weather conditions and provide long-term stability. High-quality mounting systems can help protect the panels and reduce the risk of damage caused by strong winds, rain, or other environmental factors.