The average cost to install solar on a home in California is $4.77 per watt, with about 80 percent of systems installed for $3.23 per watt to $5.82 per watt. This is equal to the average solar cost in the Pacific Region .
The average size of a solar system in California is 5.6 kilowatts, which would cost around $26,700 without any federal, state, or local incentives.
1 kilowatt of solar PV in California produces an average of 1,475 kilowatt-hours of electricity per year, so a 5.6 kilowatt solar system would generate 8,258 kilowatt-hours of electricity every year. An average household in California uses 6,680 kilowatt-hours of electricity in a year.
With an average state electricity price of 18 cents per kilowatt-hour, this solar system could save a household in California $1,505 each year. At this rate of annual savings, the system could pay for itself in about 18 years assuming no additional system expenses. This is less than the expected 30-year lifespan of a typical solar panel.
San Juan Capo: 14.9 kilowatt system installed for $3.36 per watt by LA Solar Group
Vista: 7.0 kilowatt system installed for $4.27 per watt by Sullivan Solar Power
Placerville: 5.7 kilowatt system installed for $4.41 per watt by Solarhut
La Mesa: 3.1 kilowatt system installed for $2.92 per watt by Mauzy Mechanical
Santa Barbara: 4.6 kilowatt system installed for $5.48 per watt by Planet Solar
Fresno: 4.7 kilowatt system installed for $1.16 per watt by Solcius
Solar companies with some of the lowest system costs in California include:
A1 Sun, Smart Energy Solar, Solar Vast, Zing Solar, Solar Service Center
Get more information about the best California solar companies for low system costs.