Los Angeles County · SCE
Solar Panel Installation in Downey, CA
Downey's mid-century tracts have generous unshaded roof area, which lets us build a system big enough to cover both the house and an EV without cramming.
We are based in Northridge, 30 miles away, and we design Downey systems around Southern California Edison’s actual rate structure rather than a national average. Permits go through City of Downey Building & Safety. Roofs here are typically composition shingle, which determines the mounting hardware we quote.
Downey at a glance
- Electric utility
- SCE
- Southern California Edison
- Peak sun hours
- 5.6 hrs/day
- Annual daily average
- Permitting authority
- City of Downey Building & Safety
- Los Angeles County
- Export credit
- ~$0.05/kWh
- NEM 3.0 net billing
- SGIP battery rebate
- Available
- SCE customers may qualify
- From our shop
- 30 miles
- Northridge, CA
A typical Downey project
What a $300 bill looks like after
Modeled on SCE’s approximate $0.36 per kWh and 5.6 peak sun hours a day in Downey. Your own numbers will differ — this is the shape of the answer, not a quote.
- System size
- 6.2 kW
- ~14 panels
- Annual production
- 10,073 kWh
- after standard derating
- Annual savings
- $3,252
- at today's rates
- Simple payback
- 10.8 yrs
- $99,765 over 25 years
SCE in plain language
Highest rates in the service area and the toughest export credits — which is exactly why a battery pays for itself fastest here. SCE customers also fund SGIP, so storage rebates are on the table.
You buy at
$0.55
peak, 4–9pm
You sell at
$0.05
exported surplus
That gap is the entire argument for storage in Downey. A battery lets you use your own midday production during the expensive evening window instead of selling it for a fraction of what you will pay to buy it back.
Run your own numbers
Pre-set for Downey
Already loaded with SCE rates and 5.6 peak sun hours. Move the slider to your bill.
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Who bills you?
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Your estimate
A Downey system
System size
6.6 kW
~15 panels
Saved per year
$3,484
at today's rates
Estimated cost
$36,645
solar + storage, installed
Payback
10.5 yrs
$108,000 over 25 yrs
Why the battery matters here. SCE runs NEM 3.0 net billing, which pays about $0.05 for a kilowatt-hour you export but charges up to $0.55 to buy one back at 6pm. Storing your own production instead of selling it adds roughly $1,706 a year on this bill. SGIP storage rebates may also apply in this territory.
Show the assumptions
Usage derived from $320/mo at SCE’s ~$0.36/kWh blended rate, giving 10,667 kWh a year.
Production at 5.6 peak sun hours a day with a 0.80 derate for inverter, wiring, soiling and heat losses: 10,792 kWh a year.
Self-consumption assumed at 88% of production; the remainder is exported at $0.05/kWh.
25-year figure compounds utility rates at 4.5% a year and degrades panel output 0.5% a year, net of system cost. Planning estimate only, not a quote.
Also in Downey
More than panels
Neighborhoods we cover in Downey
Orange Estates · Northeast Downey · Rancho Estates · and everywhere in between.
Downey questions
Answered with local numbers
Specific to Downey, SCE, and City of Downey Building & Safety.
How much does solar cost in Downey?
A typical Downey home paying around $300 a month to SCE needs roughly a 6.2 kW system, which lands near $19,712 installed before storage. Adding the 13.5 kWh battery we would normally pair with it brings the project to about $35,237. Roof type matters here: composition shingle is what we mostly see in Downey, and that affects mounting hardware and labor.
Is solar worth it in Downey with SCE?
Highest rates in the service area and the toughest export credits — which is exactly why a battery pays for itself fastest here. SCE customers also fund SGIP, so storage rebates are on the table. At 5.6 peak sun hours a day, a 6.2 kW array in Downey produces roughly 10,073 kWh a year. Against SCE's approximate $0.36 per kWh, that is around $3,252 of annual value, putting simple payback near 10.8 years.
Who issues solar permits in Downey?
Permits for Downey go through City of Downey Building & Safety, and interconnection is handled separately by Southern California Edison. Those are two different clocks and they do not run in parallel by default. We file both and chase the corrections, which is usually where projects stall when homeowners manage it themselves.
Do you install batteries in Downey?
Yes, and Downey sits in SCE territory, so SGIP storage rebates may apply. Because SCE runs NEM 3.0 net billing, exported power earns roughly $0.05 per kWh while peak power costs up to $0.55 — storing your production rather than selling it is where the return comes from here.
How far is Downey from your Northridge shop?
About 30 miles. We serve Downey regularly and batch projects in the area to keep mobilization costs off your invoice.
Nearby
We also serve
Ready for a Downey system design?
Send us one SCE bill. We will come back with a layout, a production model, and a real number.