Is solar worth it in California?
Short answer: on illustrative average numbers, a typical 8 kW system bought with cash pays back in about 7 years in California — then keeps saving for the rest of the panels' ~25-year life. But it hinges on your rates, usage, and net-metering terms, so run your own numbers below.
What drives solar economics in California
Two things move the needle most: how much you pay for grid power, and how much sun your panels get. California's residential electricity runs around 31¢/kWh, higher than the US average — a point in solar's favor, since you're offsetting pricier power. And with abundant sun (about 1,500 kWh per kW installed each year), an 8 kW system produces roughly 12,000 kWh/year.
The third factor is net metering. In California, major utilities credit exported solar below retail (net billing / reduced export credit). Using more of your own production — or pairing with a battery — matters more here. Confirm your utility's terms.
Remember solar offsets the generation part of your bill, not delivery and fixed fees — so even a great system in California won't take your bill to zero.
A typical system, run honestly
For an 8 kW system at about $3/W (≈$24,000), minus the 30% federal tax credit (≈$7,200), the net cost is roughly $16,800. On California's averages that returns about $62,463 net over 25 years, with first-year savings near $2,325. These are illustrative — your quote, roof, and utility will differ.
Run your California numbers
This opens the calculator pre-filled with California averages — then adjust to match your quote and bill.
Run the Numbers →FAQ
Is solar worth it in California?
For a typical 8 kW cash system (~$16,800 after the federal credit), payback is about 7 years on illustrative averages, then it keeps saving for ~25 years. Confirm with your own rates and net-metering terms.
What's the average payback period in California?
About 7 years for a cash purchase at ~31¢/kWh and 1,500 kWh/kW of sun. A loan lengthens it because of interest.
Does California have net metering?
Net billing (reduced export credit). In California, major utilities credit exported solar below retail (net billing / reduced export credit). Using more of your own production — or pairing with a battery — matters more here. Confirm your utility's terms.
Figures are approximate California averages (~2026) for illustration, drawn from public EIA rate data and NREL production ranges. Net-metering policy changes often. Verify everything against your own bill and current utility tariffs. Not financial advice.