Solar Energy in California
Explore solar energy data from 1 location across California. The state averages 5.0 kWh/m²/day solar irradiance — rated Very Good.
Solar energy in California benefits from strong irradiance levels that support cost-effective installations across a wide range of system sizes and application types. A typical system in California produces electricity for 20–25 years, with most installers offering performance guarantees.
California Solar Overview
- Profiles
- 1
- Avg. Irradiance
- 5.0 kWh/m²/day
- Solar Rating
- Very Good
- Highest Irradiance
- Contra Costa County (5.0 kWh/m²/day)
All Locations in California
| Location | Application | Irradiance | Peak Sun Hours | Est. Annual Production | System Size |
|---|---|---|---|---|---|
| Contra Costa County | — | 5.0 kWh/m²/day | 5.8 h/day | — | — |
Frequently Asked Questions — Solar in California
California has 1 solar installation profile in the SolarScope database with an average irradiance of 5.0 kWh/m²/day — rated “very good” solar resources. This is among the stronger solar markets in the country.
Based on SolarScope community data, Contra Costa County and other locations in California show strong solar potential. Irradiance levels, utility rates, net metering availability, and applicable incentives all factor into which cities offer the best solar economics.
Solar incentives in California typically include the federal Investment Tax Credit (ITC), state-level rebates, property tax exemptions, and utility net metering programs. Incentive availability changes over time — contact a local solar installer or your state energy office for current programs.
Residential solar costs in California typically range from $2.50–$3.50 per watt before incentives, or roughly $10,000–$21,000 for a 4–6 kW system. After the federal ITC and state incentives, net costs are typically 20–40% lower. Use SolarScope’s Site Studio for a location-specific analysis.
Analyze any California location
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