Published September 2, 2026 · Updated September 2, 2026 · 12 min read
The short answer
Solar panels in Los Angeles County cost roughly $2.50–$3.50 per watt installed in 2026, about $20,000–$28,000 for a typical 8 kW system before a battery or financing, the same range as the rest of California. The number that actually separates LA quotes is the utility: City of Los Angeles homes on LADWP keep a true net-metering rider that credits exports at the rate schedule's energy pricing, so panels alone pencil and a battery is optional; Long Beach, Torrance, Santa Clarita, and most other cities are on SCE's NEM 3.0, where exports earn little and a battery covering the 4–9 PM peak is what makes the system pay. In an illustrative model, the same 8 kW system projects to a 7–9 year payback on LADWP versus 10–13 years panel-only on SCE, or 8–11 years on SCE with a Powerwall 3. Permits run through LADBS in the city and 87 separate building departments or the County elsewhere, and tile roofs, flat roofs, and pre-1960 100-amp panels are the adders that push an LA quote above $3.00 per watt.
By Vinnie Curcie, Founder & CEO · Reviewed by Ashton Curcie, Chief Operating Officer
How much do solar panels cost in Los Angeles County in 2026?
In 2026, solar panels in Los Angeles County cost roughly $2.50–$3.50 per watt installed, which works out to about $20,000–$28,000 for a typical 8 kW home system before battery storage, financing, or any incentive. That is the same per-watt range we publish for California as a whole, because the county itself does not move the price much. What moves it inside LA County is something no statewide number captures: whether the utility at your address is LADWP or Southern California Edison. The same $24,000 system is credited under two completely different sets of rules depending on which side of a city boundary you live on, and that changes the payback more than a few cents per watt ever will.
The table below is the panel-and-installation cost by system size at the 2026 range. It deliberately excludes a battery, and it is a range rather than a quote: roof material, the age of your main electrical panel, and which permit office reviews your plans each move the real number. The sections that follow explain the LADWP-versus-SCE split, the permit path for the City of Los Angeles versus the county's other 87 cities, and the LA roof and electrical conditions that most often add to a quote.
| System size | Typical LA County fit | Estimated installed cost at $2.50–$3.50/W |
|---|---|---|
| 6 kW | Smaller bungalows and condos with modest usage | $15,000–$21,000 |
| 8 kW | Typical single-family home | $20,000–$28,000 |
| 10 kW | Larger homes with central air | $25,000–$35,000 |
| 13 kW | Large, all-electric, or EV-charging homes | $32,000–$45,000 |
Estimates, not quotes, derived from OC Solar's published 2026 California range of $2.50–$3.50 per watt. Adders such as tile or flat roofs, a main panel upgrade, or storage are itemized separately. Battery storage adds $15,500–$18,500 for a Tesla Powerwall 3 at OC Solar's published 2026 pricing.
LADWP or SCE? Check this before you compare any quotes
Los Angeles County is the only county in Southern California where a large share of homes are not on an investor-owned utility. The City of Los Angeles, from San Pedro to the San Fernando Valley, is served by the Los Angeles Department of Water and Power, a municipal utility governed by city ordinance rather than the California Public Utilities Commission. Long Beach, Torrance, Santa Clarita, and most of the county's other incorporated cities are Southern California Edison territory. Pasadena, Glendale, and Burbank each run their own municipal utility with its own rules, and several SCE communities such as Calabasas and Agoura Hills buy their generation through Clean Power Alliance while SCE still delivers it and handles solar interconnection.
This matters because the rule that reshaped California solar, the CPUC's NEM 3.0 Net Billing Tariff, applies only to CPUC-regulated utilities. LADWP is not on NEM 3.0. It applies its own published Net Energy Metering rider, which nets your kilowatt-hours over the billing period and credits any excess generation at your rate schedule's energy pricing, rolling credit balances into later bills. SCE customers, by contrast, are credited for exports at avoided-cost values that run roughly 75 percent lower on average than the old NEM 2.0 retail credit. Two homes a mile apart, one in Los Angeles and one in Torrance, can therefore install the identical system for the identical price and see very different math.
If you are not sure which utility serves you, look at the top of your electric bill. Our Los Angeles County service page lists every city we serve with its utility, and we keep dedicated guides for LADWP customers and SCE customers because the design advice genuinely differs.
Same system, two utilities: how each one values your solar
Here is what actually changes when the same 8 kW array goes on an LADWP roof versus an SCE roof. Under LADWP's net-metering rider, a kilowatt-hour you export at noon and a kilowatt-hour you buy back at 7 PM largely cancel within the billing period, so the array's full production is worth close to your energy rate whether or not you are home when the sun shines. Under SCE's NEM 3.0, only the solar you consume the moment it is produced is worth retail; everything you export earns the low avoided-cost credit, and the power you buy back during the 4–9 PM peak is the most expensive SCE sells. SCE's published system-average residential rate is about 34.5 cents per kWh as of June 1, 2026, with peak-period pricing well above that.
That is why a battery is close to mandatory on SCE and a genuine choice on LADWP. On SCE, storing midday production and discharging it from 4 to 9 PM converts low-value exports into high-value avoided purchases; the battery is what makes the panels pay. On LADWP, panels alone still pencil, and the battery case rests on evenings if you choose the optional R-1B time-of-use rate, on outage backup, and on keeping energy on-site since bill credits offset energy charges only and any remaining balance is zeroed if you close the account.
| Factor | LADWP (City of Los Angeles) | SCE (Long Beach, Torrance, Santa Clarita, most county cities) |
|---|---|---|
| Governing rule | LADWP Net Energy Metering rider, set by city ordinance | CPUC NEM 3.0 Net Billing Tariff |
| Value of an exported kWh | Credited at your rate schedule's energy pricing, netted over the billing period | Avoided-cost export credit, roughly 75 percent below the old retail credit on average |
| Value of a self-consumed kWh | Your R-1A tiered energy rate, or the R-1B time-of-use rate if you opt in | Retail rate at that hour; about 34.5 cents system average, higher during the 4–9 PM peak |
| Peak hours to design around | R-1B High Peak 1:00–4:59 PM weekdays; Low Peak 5:00–7:59 PM after panels wind down | 4–9 PM every day on SCE time-of-use plans |
| Is a battery required for the math? | No; a choice for evenings, backup, and on-site use | Effectively yes for strong savings |
| Interconnection | LADWP Service Planning; systems of 10 kW or less need no interconnection agreement form and qualify for photo inspection | SCE interconnection application through to Permission to Operate |
Rate structures per LADWP's residential rate and net-metering pages and SCE's time-of-use rate pages, accessed September 2026. Exact LADWP per-kWh prices live in Schedule R-1 and change by ordinance.
Payback math: the same $24,000 system on LADWP and on SCE
To show how much the utility matters, here is one illustrative model. Assume an 8 kW system at $24,000, the midpoint of the 2026 range, producing about 12,000 kWh a year, which is roughly 1,500 kWh per installed kilowatt for a well-oriented, unshaded Los Angeles roof. For SCE we use the published 34.5-cent system-average rate, an assumed 45-cent rate for peak-period purchases a battery displaces, and an assumed 6-cent average export credit under NEM 3.0. For LADWP we assume a 25-cent blended R-1A energy rate; replace that with the energy rate printed on your own bill, because LADWP prices vary by tier, temperature zone, and season. Where a battery is included, it is a Tesla Powerwall 3 at OC Solar's published $15,500–$18,500 installed range.
Read the table as a comparison of shapes, not a promise of years. The point is that on LADWP the panels do the work and a battery is an add-on you buy for other reasons, while on SCE the battery is what turns a 10-to-13-year panel-only payback into a system that eliminates most of the bill. Our payback period guide walks through the full method, and our time-of-use guide and NEM 3.0 explainer cover the SCE side in depth.
| Scenario | Installed cost | Modeled first-year bill savings | Projected simple payback |
|---|---|---|---|
| LADWP, panels only | $20,000–$28,000 | About $3,000 (12,000 kWh netted at an assumed 25 cents) | About 7–9 years |
| LADWP, panels plus Powerwall 3 | $35,500–$46,500 | About $3,000 plus any R-1B evening shift; battery is bought for backup and on-site use | About 12–15 years on bill savings alone |
| SCE, panels only | $20,000–$28,000 | About $2,100 (40 percent self-consumed at retail, 60 percent exported at an assumed 6 cents) | About 10–13 years |
| SCE, panels plus Powerwall 3 | $35,500–$46,500 | About $4,200 (battery shifts roughly 45 percent of production onto 4–9 PM purchases at an assumed 45 cents) | About 8–11 years |
Payback figures on this page are illustrative projections from the stated assumptions, not a quote or a guarantee. Estimates only; individual results vary with your usage, rate schedule, roof, and equipment. Rate escalation, which typically shortens payback, is not included. Modeled by OC Solar, September 2026.
Permits and inspections: LADBS, 87 other cities, and the County
There is no single Los Angeles County solar permit. In the City of Los Angeles, the building and electrical permit runs through the Los Angeles Department of Building and Safety, one of the busiest building departments in California. Simple rooftop projects that do not require plan check are issued online as Express Permits, and LADBS publishes solar-specific standard plans and plan-check correction lists that a prepared installer designs to from the start. The utility interconnection is a separate pipeline through LADWP Service Planning, and the two agencies do not talk to each other on your behalf: projects stall when nobody owns the handoff between the LADBS final inspection and LADWP's bidirectional meter and sign-off. In our experience that handoff, not the hardware, is where City of LA timelines are won or lost.
Outside the city, each of the county's 87 other incorporated cities reviews through its own building department, and several contract cities such as Lakewood and La Mirada route plan check and inspections to Los Angeles County Public Works Building and Safety. Unincorporated communities such as Hacienda Heights and La Crescenta-Montrose go through the County directly using its EPIC-LA portal, and a growing number of cities, Arcadia among them, accept standardized residential projects through the SolarAPP+ automated review. Permit fees, plan-check turnaround, and inspection scheduling all differ by office, which is why two identical quotes can carry different timelines and why we itemize permit costs rather than bury them in the per-watt price.
Across the county, OC Solar's median is about 30 days from signing to installation and about 60 days from signing to Permission to Operate, with weekly status updates through whichever office holds your file. For a completed City of LA example, see our Los Angeles solar and Powerwall 3 project on LADWP service, which received utility approval in July 2025.
LA roof stock and the line items that move a quote
Los Angeles has some of the oldest housing in the state, and the roof and electrical conditions that come with it are the most common reasons a Los Angeles quote lands above $3.00 per watt. Spanish and Mediterranean clay or concrete tile is everywhere from the Westside to the San Gabriel Valley, and tile takes more labor and more care than composition shingle: panels are typically mounted on tile hooks or in a removed-and-flashed section, and that shows up in the per-watt price. Mid-century and modern homes across the Valley, the Hollywood Hills, and the beach cities often have flat or low-slope roofs that need tilt-up or ballasted racking to reach a productive angle. Composition shingle, common in Long Beach, Torrance, Santa Clarita, and the suburbs, is the least expensive roof to work on.
Electrical is the second driver. A large share of LA County homes were built before 1960 with 100-amp main panels, and many need a main panel upgrade to support solar plus a battery, plus the space for a backup switch or gateway. That upgrade is a legitimate line item, and on an older home it can also mean an LADWP or SCE service-planning step of its own. Third is site geometry: large hillside lots in the Santa Monica Mountains or the foothills can require long conduit runs and trenching, and homes in mapped very high fire hazard severity zones carry roof-access and setback requirements that shape the array layout. Finally, a roof near the end of its life should be replaced before panels go on it. Because OC Solar is a licensed solar, battery, and roofing contractor, we can price the re-roof and the array together and warrant both.
None of these adders is a reason to avoid solar; they are reasons to insist on an itemized proposal. When you compare Los Angeles quotes, line up the roof type, the electrical scope, the storage, and the permit office side by side, and be suspicious of any flat per-watt figure that does not say what it excludes.
Financing in 2026 and your next step
The federal incentive picture changed at the end of 2025. The residential Section 25D tax credit expired for systems placed in service after December 31, 2025, so a cash or loan purchase in 2026 does not receive a federal credit. On $0-down lease, power-purchase, and prepaid plans, the financing company owns the system and claims the commercial Section 48E credit, passing roughly 30 percent of that value through as a lower price, a path that remains available through about 2027. That is now the main way federal value reaches a Los Angeles County project, and it is why a lease or PPA can carry a lower monthly cost than a loan on the same equipment even though neither is free. Our financing page compares cash, loan, lease, PPA, and prepaid options with the current terms.
From here, the most useful step is to get a number for your own address rather than a county range. Start an itemized estimate from your roof and utility bill, compare us against the field in our review of the best solar companies in Los Angeles, or read how we run City of LA projects on our Los Angeles service page. OC Solar has installed solar, battery, and roofing across Southern California since 2016, more than 30 megawatts to date, holds CSLB license 1023627, and carries a 4.8-star Google rating across 400-plus reviews. We serve Los Angeles County from our LA-area office and our Irvine headquarters, and every quote we send names the utility, the permit office, and every adder that applies to your home.
FAQ
Roughly $2.50–$3.50 per watt installed, or about $20,000–$28,000 for a typical 8 kW system before battery storage or financing. Smaller 6 kW systems run about $15,000–$21,000 and 10 kW systems about $25,000–$35,000. Those are 2026 ranges, not quotes: tile or flat roofs, an older main electrical panel, and which permit office reviews your plans each move the final number, which is why an itemized proposal matters more in Los Angeles than a per-watt headline.
About $2.50–$3.50 per watt for panels and installation in 2026, the same range as the rest of California. The county does not carry a premium on its own; what pushes an LA quote toward the top of the range is a clay or concrete tile roof, a flat roof that needs tilt racking, a 100-amp panel that needs upgrading, or a hillside lot with long conduit runs. A battery is priced separately, at $15,500–$18,500 installed for a Tesla Powerwall 3 at OC Solar's published 2026 pricing.
The installed price is the same; what differs is what the system is worth. LADWP applies its own net energy metering rider, which nets your kilowatt-hours over the billing period and credits excess generation at your rate schedule's energy pricing, so panels alone still pencil and a battery is optional. SCE customers are on the CPUC's NEM 3.0 net billing tariff, which credits exports at a low avoided-cost value, so the savings depend on storing solar for the 4–9 PM peak and a battery is close to mandatory. In our illustrative 2026 model, an 8 kW panel-only system projects to about a 7–9 year payback on LADWP versus 10–13 years on SCE, while adding a Powerwall 3 on SCE brings the projection to about 8–11 years. Those are projections from stated assumptions, not guarantees.
For panel-only solar, LADWP's rules are more favorable because exports are still credited at your rate schedule's energy pricing rather than NEM 3.0's avoided-cost value. For solar plus battery, SCE customers see the bigger swing, because a battery converts cheap exports into avoided 4–9 PM purchases at SCE's highest prices. Neither is a reason to wait; it simply changes the design. On LADWP we right-size the array to your usage and treat storage as a backup and evening choice. On SCE we design the battery first and size the array around covering the peak.
LADWP's optional R-1B time-of-use rate prices power by time of day: High Peak on weekday afternoons from 1:00 to 4:59 PM, Low Peak in mid-morning and from 5:00 to 7:59 PM, and a lower Base period overnight and on weekends. The default R-1A rate is tiered by usage, season, and temperature zone with no time-of-day pricing. For a solar home, the weekday High Peak largely overlaps production, and the 5:00–7:59 PM Low Peak is the window a battery covers after panels wind down. LADWP itself flags solar customers who bank credits as good time-of-use candidates.
City of LA projects run through two separate agencies: the building and electrical permit through LADBS, where simple rooftop systems that do not need plan check are issued online as Express Permits, and the interconnection through LADWP Service Planning, where systems of 10 kW or less need no interconnection agreement form and qualify for photo inspection. OC Solar's median across LA County is about 30 days from signing to installation and about 60 days to Permission to Operate. The City of LA can run longer when the LADBS-to-LADWP handoff is not actively managed, which is why we own both sides of the process and report weekly.
Sources
- 1.LADWP — Residential Electric Rates (Schedule R-1A and R-1B) — Los Angeles Department of Water and Power · accessed 2026-09
- 2.LADWP — Net Energy Metering rider (EV/NEM/REO Rates) — Los Angeles Department of Water and Power · accessed 2026-09
- 3.LADWP — Interconnection Requirements (NEM, PV and BESS) — Los Angeles Department of Water and Power · accessed 2026-09
- 4.LADBS — Express Permits — Los Angeles Department of Building and Safety · accessed 2026-09
- 5.CPUC — Net Billing Tariff (NEM 3.0) — California Public Utilities Commission · accessed 2026-09
- 6.SCE — Time-of-Use Residential Rate Plans — Southern California Edison · accessed 2026-09
- 7.IRS — Residential Clean Energy Credit (Section 25D) — Internal Revenue Service · accessed 2026-09
- 8.IRS — Clean Electricity Investment Credit (Section 48E) — Internal Revenue Service · accessed 2026-09
- 9.CSLB — Check a License — California Contractors State License Board · accessed 2026-09
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