How much do solar panels cost in California?

In California, solar panel installation averages about $2.8 per watt. For a typical $150 monthly electric bill, a 3 kW system (8 panels) costs approximately $8,960 before incentives, or $6,272 after the 30% federal tax credit.

Is solar worth it in California?

Yes — with 6.08 peak sun hours per day and 35.3¢/kWh electricity rates, solar in California typically pays for itself in 3.3 years. The rating is Excellent.

Solar Panel Cost & Savings in California (2026)

Quick California Solar Facts

6.08

Peak Sun Hours/Day

35.3¢

Electricity Rate

$2.8

Install Cost/Watt

3.3 yrs

Avg Payback

In California, a typical 3 kW system (8 panels) costs approximately $6,272 after the 30% federal tax credit. With 6.08 peak sun hours per day and 35.3¢/kWh electricity rates, annual savings average $1,928 with a payback period of 3.3 years. Rating: Excellent. Source: NREL PVWatts v8 (PSH), US EIA July 2026 (rates), SEIA/EnergySage Q1 2026 (costs).

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How many solar panels do I need in California?

For a typical home with a $150 monthly electric bill in California, you need about 8 panels (3.2 kW system). Your exact number depends on your specific monthly usage and roof orientation.

What solar incentives are available in California?

Every US homeowner qualifies for the 30% federal Investment Tax Credit (ITC) through 2032. Many states also offer additional incentives — check our main calculator's Incentives tab for California-specific rebates, tax credits, and net metering policies.

Is California a good state for solar?

California has 6.08 peak sun hours per day (U.S. average: 4.98). With electricity at 35.3¢/kWh (U.S. average: 18.83¢/kWh), solar in California typically pays for itself in 3.3 years. Overall rating: Excellent.