Plug-in solar savings calculator
See a realistic range for what a plug-in kit could save you a year, and how long it takes to pay for itself. Solar production comes from NREL's free PVWatts tool. Every other number is an assumption you can see and change.
Default rates: averages as of Jun 1, 2026. Average residential rates before the California Climate Credit. Your plan may differ; enter your own rate for a better estimate.
Your estimate
Enter your ZIP and press See my savings. We'll show a low-to-high range, not a single promise.
Yearly savings
–
Middle estimate: a year
- Payback
- Solar made
- kWh/yr
Without a battery, power your home doesn't use the moment it's made earns nothing. Households typically use 50–70% of midday production at home (NRG Clean Power), so we assume 60%. Adjust it if you know better.
These are estimates. Real results vary with shade, weather and your rate plan. This is not a quote, and it doesn't mean any kit is approved for California. Disclaimer.
Assumptions we used
Email me this estimate
Get this estimate and an alert when a California-compliant kit launches.