Is solar worth it in California?

With an average payback period of 5.6 years and 25-year savings of $67,425, solar panels in California are an excellent investment.

How much do solar panels cost in California?

The average cost of a 6kW residential solar system in California is $15,000 before incentives and tax credits.

How much can I save with solar panels in California?

Homeowners in California save an average of $2,697 per year with solar panels, totaling approximately $67,425 over 25 years.

Solar Panel ROI in California

Is solar worth it in CA?

4.5x ROI Score

5.6 yrs Payback Period

$2,697 Annual Savings

Key Solar Metrics for California

Solar Irradiance	5.87 kWh/m²/day
Estimated Annual Production (6kW system)	9,700 kWh
Average Electricity Rate	$0.278/kWh
Average System Cost	$15,000
Estimated Annual Savings	$2,697/year
Payback Period	5.6 years
25-Year Savings	$67,425

California vs National Average

Solar Irradiance 5.87 kWh/m²/day +18.3% vs national avg

National Avg Irradiance 5.12 kWh/m²/day baseline

Payback Period 5.6 years Faster than average

How We Calculated This

Our solar ROI calculations use data from the National Renewable Energy Laboratory (NREL) PVWatts API, which models solar energy production based on location-specific solar irradiance, weather patterns, and panel tilt angles. We assume a standard 6kW residential system with south-facing panels at optimal tilt.

Electricity rates are sourced from the U.S. Energy Information Administration (EIA) and represent state-level residential averages. Annual savings are calculated by multiplying estimated production by the local electricity rate. The payback period divides system cost by annual savings. The ROI score represents total 25-year savings divided by system cost.

These estimates do not include federal tax credits (currently 30% ITC), state incentives, SRECs, or utility rebates, which can significantly reduce the effective payback period. Actual results vary based on roof orientation, shading, local weather, and utility rate changes.

Compare with Nearby States

Oregon 16.5 yr payback $886/yr savings Nevada 9.7 yr payback $1,407/yr savings Arizona 10 yr payback $1,381/yr savings

Solar Outlook for California

California's 5.87 kWh/m²/day irradiance is 18.3% above the national average, and electricity rates of $0.278/kWh drive one of the fastest payback periods in the country at 5.6 years. Annual savings of $2,697 make solar an excellent investment here.

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