As of April 2026, the average solar panel system costs $2. 57/W including installation in San Diego, CA. 9 kW system (the average system size in San Diego, CA), this comes out to about $17,769 before any available incentives, though prices range from $15,104 to.
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You'll pay an average of $38,336 to install a 13. Solar panels typically last 25-30 years, generating free electricity and protecting you from rising utility rates for decades.
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Currently, the average monocrystalline solar cell price is about $1 to $1. 20 per watt, but this can vary based on factors including the brand and the retailer.
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The average cost of a residential solar panel system ranges from $18,000 to $43,000, depending on the system size, location, and available incentives. Typically, a 6-8 kW system--suitable for an average 2,000-square-foot home--will cost between $15,000 and $22,500 before.
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