To increase solar panel output within the same area, you can add more panels, improve their orientation and tilt

 To increase solar panel output within the same area, you can add more panels, improve their orientation and tilt, clean them regularly, upgrade inverters, or consider high-efficiency panels like Concentrated Photovoltaic (CPV) cells. Adding more panels is a straightforward option, especially if the new panels are identical to the existing ones and the total wattage remains within the inverter's capacity. 

Here's a more detailed breakdown:

1. Adding More Panels:

Incremental Expansion:

Adding more of the same type of solar panels to an existing system is a common and relatively easy method. 

Inverter Compatibility:

Ensure the total wattage of the expanded panel array stays within the inverter's capacity. Many inverters can handle arrays exceeding their rated capacity by a certain percentage (e.g., up to 133%) due to power loss during transfer. 

Installer Recommendation:

Consult with your original solar installer for seamless integration and to ensure the new panels are compatible with the existing system. 

2. Improving Efficiency:

Panel Orientation and Tilt:

Ensure panels are optimally positioned for maximum sunlight exposure. 

Cleaning:

Regularly cleaning panels removes dust and debris, maximizing light absorption. 

Inverter Upgrade:

Replacing an older inverter with a more efficient model can significantly improve overall system performance. 

CPV Cells:

Consider using high-efficiency CPV cells, which can generate more power from the same area.

3. Other Considerations:

Backup Batteries:

Install backup batteries to store excess energy generated during the day for use at night or during cloudy periods. 

Net Metering:

If your utility offers net metering, you can potentially get credit for excess energy fed back into the grid. 

Permits and Inspections:

Expanding your solar system may require new permits and inspections, especially if you're adding equipment like inverters or batteries. 

Professional Installation:

While some homeowners may attempt DIY panel installation, it's generally recommended to hire a qualified solar installer, especially for complex upgrades. 

This video shows how to wire solar panels in parallel: