Solar payback in California (2026)
In California, a typical 8 kW home-solar system costing about $24,000 ($3/W, no federal credit in 2026) has an estimated simple payback of 5.2 years and roughly $124,258 in net savings over 25 years. This assumes an average rate of 33.35¢/kWh and ~1,630 kWh produced per kW each year.
Source: EIA & NREL. Data as of March–June 2026.
California pairs some of the country's highest residential electricity rates with strong year-round sun, so payback stays fast even without the federal credit. Net metering moved to NEM 3.0 (net billing) in 2023, which lowers export value and rewards adding a battery.
California solar payback at a glance
| Metric | Value (CA) |
|---|---|
| Average residential rate | 33.35 ¢/kWh |
| Peak sun hours (daily avg) | 5.6 h |
| Production factor | 1,630 kWh/kW/yr |
| 8 kW system annual output | 13,040 kWh |
| Est. up-front cost (8 kW @ $3/W) | $24,000 |
| Year-1 bill savings | $4,349 |
| Estimated simple payback | 5.2 years |
| Estimated 25-year net savings | $124,258 |
Source: EIA Electric Power Monthly (Mar 2026) & NREL PVWatts. Data as of June 2026.
Run your own numbers for California
The calculator below is pre-filled with California's electricity rate and production factor. Change the system size, cost per watt or escalation to match your own quote.
Figures are planning estimates that ignore financing, inverter replacement and maintenance. They assume cash purchase, 3%/yr rate escalation and 0.5%/yr panel degradation. See the methodology and disclaimer.
How California compares
Browse all states to compare payback, or read the guides: Is solar worth it in 2026 without the federal credit? and solar payback period explained.
Frequently asked questions
What is the solar payback period in California?
For a typical 8 kW system costing about $24,000 ($3/W) with no federal tax credit in 2026, the estimated simple payback in California is roughly 5.2 years, based on an average residential rate of 33.35¢/kWh and a production factor of about 1,630 kWh per kW per year. Your actual payback depends on your quote, usage and net-metering rules.
Is solar worth it in California now that the federal tax credit has expired?
The 30% federal residential credit (Section 25D) expired on December 31, 2025, which raises the up-front cost of 2026 installs by about 30%. California pairs some of the country's highest residential electricity rates with strong year-round sun, so payback stays fast even without the federal credit. Net metering moved to NEM 3.0 (net billing) in 2023, which lowers export value and rewards adding a battery.
How much electricity does an 8 kW system produce in California?
About 13,040 kWh in year one (8 kW × 1,630 kWh/kW), declining slowly as panels degrade ~0.5% per year.
Other states
Last updated: 2026-06-14