1. Site selection: It is necessary to consider factors such as geographical location, climate conditions, and surrounding environment to ensure that the photovoltaic system can maximize the use of solar energy.

2. Component selection: It is necessary to select the appropriate type and specification of photovoltaic components based on local climate conditions, the orientation and tilt angle of the installation site, and other factors.

3. System design: It is necessary to design a reasonable photovoltaic system architecture based on the actual situation of the installation site, including the arrangement of photovoltaic components, the design of brackets, the selection and connection of cables, etc.

4. Electrical design: It is necessary to design a reasonable electrical system based on the power and voltage level of the photovoltaic system, including the selection and configuration of inverters, transformers, switchgear, etc.

5. Safety design: It is necessary to consider the safety of the photovoltaic system, including lightning protection, leakage protection, fire prevention and other measures.

6. Maintenance design: It is necessary to consider the maintenance needs of the photovoltaic system and design reasonable maintenance channels and inspection spaces.