The median installed solar price in Downey, CA was $2.86 per watt across 47 residential installations in the 12 months to September 2026, a small sample.
Half of the residential solar installations in Downey in the 12 months to September 2026 cost between $2.41 and $3.32 per watt for the solar array.
Solar quotes submitted to Downey homeowners through online marketplaces had a median asking price of $2.51 per watt as of September 2026, $0.35 per watt below what Downey homeowners actually paid.
$2.86/WMedian installed price, Downey47 quotes, last 12 months · small sample
$2.41–$3.32Typical installed range ($/W)middle 50%
$2.51/WMarketplace quote benchmark, Downeyas of September 2026
Installed prices are what homeowners paid for the solar array on residential installations from the last 12 months (cash and loan purchases; leases and PPAs excluded). With only 47 recent Downey installations, treat the city figure as a guide; California statewide is $2.85/W across 41,848. The marketplace benchmark is the median of quotes installers submitted to homeowners through online solar marketplaces — an asking price, before negotiation. See California pricing in detail →
Solar installers in and around Downey
The 7 based in Downey come first, ranked by tracked installations, then rating; the rest are the nearest of the 58 within 15 miles. Every profile shows real pricing, reviews and contact details.
Companies headquartered in Downey are listed first, ordered by the number of installations we have on record for them, then by customer rating. The remaining slots go to the nearest companies within 15 miles, closest first. Paid installer memberships do not affect the order.
The installation records come from public utility and state solar program filings and from quotes homeowners upload to AgentSolar. We match each record to the installer named on it, so a company's count reflects work we can actually attribute to them, not a claim on their website.
Equipment brands Downey installers carry
Enphase 6
Qcells 3
SMA 2
Briggs & Stratton 1
Canadian Solar 1
Daikin 1
EcoFlow OCEAN Pro 1
ENERGY STAR 1
Fortress Power 1
Franklin Battery Backup Systems 1
Franklin WH Battery Backup 1
GAF 1
Solar in Downey: common questions
How much does solar cost in Downey, CA?
Across 47 residential installations in Downey from the last 12 months, the median price paid for the solar array was $2.86 per watt, with most between $2.41 and $3.32/W. These are cash and loan purchases; leases and PPAs are excluded. That is a small sample, so treat it as a guide; across California the median is $2.85 per watt from 41,848 installations. Quotes submitted to Downey homeowners through online solar marketplaces run a median of $2.51 per watt as of September 2026 — an asking price, before negotiation.
Who are the most active solar installers in Downey?
Among installers serving Downey with at least 10 customer reviews and solar installations on record, the highest rated are SOLAR SOURCE® (5.0 from 110 reviews), Mario Castillo Electric (4.9 from 525 reviews) and Evolution Solar Energy (4.5 from 52 reviews). Ratings are each company's overall customer rating across all of its work, not solar alone. Paid installer memberships do not affect this list.
Have a quote already? Upload it and see how it stacks up against 47 real Downey installations — price, equipment and the fine print. No quote yet? We'll request them from vetted installers for you.