Location: Fugar, Etsako Central Local Government Area of Edo State. Nigeria.

Certainly, designing and installing a 7.5 kW solar PV system with hybrid inverter, 48 V DC bus voltage, eight 220 Ah deep cycle batteries and eight 330 W, 30 V DC photovoltaic panels is a complete process. Here are the key steps and things to consider:
1. Assess the load:
Start by assessing the electrical load of the area where the solar system will be installed. Calculate daily energy consumption in kilowatt hours (kWh).
2. System size:
Determines the system size needed to meet energy needs. In this case, you need a 7.5kW (7500W) system to generate enough power.
3. Choosing a solar panel:
Choose a high quality 330W solar panel with an inverter compatible voltage rating (30V DC).
4. Inverter and charge controller selection:
Select a hybrid inverter with a 48 V DC bus voltage to match the battery bank voltage. Make sure the inverter can handle the total system power (7.5kW).
Select charge controller if system includes battery.
5. Spare batteries:
Install eight 220 Ah deep cycle batteries, taking care to properly position them in a well-ventilated and safe area.
Connect batteries in series or parallel to obtain desired system voltage (48 V DC).
6. Racks and Racks:
Design and install a sturdy and adjustable mounting system for six solar panels on the roof or on the ground, optimizing angle and orientation for exposure maximum sunlight.
7. Wiring and connection:
Wire solar panels in series or parallel to meet the inverter’s input voltage requirement (30V DC).
Connect the panels to the charge controller and then to the hybrid inverter. Ensure proper grounding and overcurrent protection.
Connect the inverter to the battery pack to manage and store excess energy.
8. Electrical connection:
Connect the inverter to the electrical distribution panel to supply power to the building.
Ensure proper wiring, disconnects, and circuit breakers are installed.
9. Monitoring and control:
Set up a monitoring system to monitor the performance of the solar power system, including battery charge status and power generation.
10. Testing and operation:
Test the entire system to ensure that it is generating power as expected and charging the battery effectively.
Verify that the hybrid inverter seamlessly switches between solar power, battery power, and grid power (if applicable).
11. Safety and Compliance:
Ensure that all electrical work complies with local building codes and safety standards.
12. Maintenance and Monitoring:
Implement a regular maintenance program to clean control panels, check wiring, and monitor battery condition.
Monitor the system for performance problems or anomalies.
13. Backup power planning:
Develop a plan to use the battery pack as a backup power source during grid outages if this is a desired feature of the system.
14. Grid connection (if applicable):
If the system is grid connected, coordinate with the local utility to ensure proper grid connection and all necessary permits.
15. User Education:
Provide training to system owners or users on how to operate, maintain, and secure the system.
Designing and installing a battery solar power system is a complex project that must be undertaken by experienced professionals. It is important to conduct a thorough site assessment, comply with safety and code requirements, and monitor system performance over time.