Solar payback in Ontario, CA

Electricity rates near Ontario

We use Southern California Edison (SCE) as the likely utility for Ontario. Check your bill to confirm yours. Other utilities in the state are listed for comparison.

How much sun Ontario gets

Estimated output of 1 kW of rooftop solar, month by month, from NREL PVWatts weather data: about 1,592 kWh per year. Real output depends on your roof, shading and equipment.

Homes in Ontario

Homes (housing units)

55,966

Lived in by their owner

58.0% of occupied homes

Detached single-family houses

57.9% of homes

Median year built

1980

Median value of owner-occupied homes

$607,600

Rooftop solar is usually the homeowner's decision, and it is simplest on a house with a roof of its own. In Ontario, 58.0% of occupied homes are lived in by their owner and 57.9% of all homes are detached single-family houses. Condos, townhomes and apartments usually need approval from the building or association first.

Half of Ontario's homes were built before 1980. Panels last decades, so if your roof is near the end of its life, ask installers whether to replace it before they install.

Source: US Census Bureau, American Community Survey 2020–2024 5-year estimates for Ontario city, read on 2026-11-02. See the Census table. Estimates have a margin of error.

Example payback in Ontario

These use illustrative example bills, not averages for Ontario. They show a solar-only system (no battery, some shading) at the likely utility's rates, with no federal tax credit. Your own numbers will differ; use the calculator for yours.