As of January 2023, the average solar panel cost in San Diego, CA is a very affordable $2.89/W. This is great news for those in the San Diego area who are looking to make the switch from traditional energy sources to renewable solar energy. In today’s day and age, the cost of solar has become increasingly more affordable, making it easier for homeowners to make the switch. When considering a solar panel system size of 5 kilowatts (kW) for a San Diego-based home or business, the cost of the system can range from $12,282 to $16,618. This range can be attributed to a variety of factors, such as the size of the system, the quality of the panels, and the installation process. With that being said, the average gross price for a 5 kW solar installation in San Diego, CA comes in at $14,450.