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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All-in BESS projects now cost just $125/kWh as of October 2025 2. With a $65/MWh LCOS, shifting half of daily solar generation overnight adds just $33/MWh to the cost of solar.
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Based on real installations across San Jose and nearby communities like Milpitas, Santa Clara, and Campbell, this calculator uses Palmetto's firsthand local data to give you an accurate estimate of what solar installation could cost for your home.
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