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Solar Energy in California

Solar Panels in California

There are currently at least 626,820 solar panel installations throughout the state of California right now.

Solar Energy Data in CA by City

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Solar Power in CA

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CA Solar Energy

Solar Power in California

Solar Energy Levels in California

The average monthly solar radiation level in California's capital city, Sacramento, of 5.62 kilowatt hours per square meter per day (kWh/m2/day) is approximately 51% greater than the average level of 3.73 kWh/m2/day in an area with historically low levels (WA) and is approximately 15% less than the average level of 6.6 kWh/m2/day in an area with historically high levels (NV). [1]


→ Values listed as 0 (zero) are not available (N/A).
→ California values listed here are based on the capital, Sacramento.

Solar Radiation in California

Below is a month-by-month comparison of how average California solar radiation levels compare to average levels in an area with historcially high levels (NV) and one with historically low levels (WA). [1]

→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).
→ California values listed here are based on the capital, Sacramento.

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Solar Installs in California

Solar Panel Installations in California

A look at solar installs in California. The chart below visualizes install totals for the top five counties in CA vs. the cumulative install total of rest of CA counties combined.

Breakdown of Solar Installs in California

There are currently at least 626,820 solar panel installations throughout the state of California right now. [1]

  • Top Five Solar Install Counties in California
    • Los Angeles County: 82,650 solar installs
    • San Diego County: 82,158 solar installs
    • Riverside County: 52,763 solar installs
    • Orange County: 37,535 solar installs
    • Santa Clara County: 35,058 solar installs
    • Everywhere Else: 336,656 solar installs

Note: Install totals presented here are those voluntarily contributed from a variety of sources including solar incentive programs, utilities, installers, and the general public. [1] Data for some states is thinner than others.

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Cost of Utilities in California

California Electricity Costs

Residential electricity prices in California averaged 19.39 cents per kilowatthour (¢/kWh) in June 2017, which was approximately 47% more than the overall U.S. average residential electricity rate of 13.22¢/kWh in June. [2]

Solar Power Poll: California

Vote now: What do you think? Are solar panels & solar power a good choice for residents of the state of California?

CA: Yes, solar is a great option  
CA: No, solar isn't a good option

California Natural Gas Costs

Residential natural gas prices in California averaged $13.21 per thousand cubic feet (Mcf) in June 2017, which was about 17% less than the overall U.S. average residential natural gas rate of $15.98 per Mcf in June. [3]

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More about California

About California

California ranks 1st among all states in the U.S. with a population of approximately 37,253,956. [4]

CA Solar Power

Solar Energy in CA

To learn more about solar energy and solar power in California, or for additional solar-related resources in CA, visit the U.S. Energy Information Administration.

Did you know?

Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.

Cities in California

References