Choosing a solar company in California used to mean picking the biggest name you’d heard of. In 2026, that approach can backfire. Three of the most recommended residential installers of the past decade, SunPower, Sunnova and Freedom Forever, have all gone through bankruptcy since 2024, and Freedom Forever moved into Chapter 7 liquidation in August 2026. Homeowners who signed with them are now asking a painful question: who honors my workmanship warranty?
That’s why this list focuses on what actually protects you for the next 25 years: who does the installation, how well the system is designed for California’s current utility rules, how honest the pricing is, and whether the company will still be answering the phone in 2035.
Why choosing the right installer matters more in 2026
Three changes have reshaped California solar:
- NEM 3.0 (the Net Billing Tariff) now applies to new SCE, PG&E and SDG&E customers. Exported power earns far less than it used to, so systems must be sized for self-consumption, and batteries do much of the financial work.
- The 30% federal residential tax credit ended on December 31, 2025. Any company still promising it on a 2026 purchase is either outdated or misleading you. Lease structures and financing can still deliver meaningful savings.
- Industry consolidation has left many homeowners with orphaned systems. Local, installation-focused contractors have proven far more durable than finance-driven national sales machines.
How we evaluated these companies
We looked at licensing and certifications, equipment quality, battery expertise, financing flexibility, post-installation support, public reputation and financial durability. No company paid to appear here.
| Rank | Company | Headquarters | Best for |
|---|---|---|---|
| 1 | Green Additions | Woodland Hills (LA) | Custom solar + battery design with personal, local support |
| 2 | Sunrun | San Francisco | Leases and PPAs backed by the largest balance sheet |
| 3 | Tesla Energy | Statewide | An all-Tesla solar and Powerwall package |
| 4 | OC Solar | Irvine | Tesla-focused battery installs in Orange County and LA |
| 5 | Sunergy | Lake Forest | Award-winning customer experience |
| 6 | American Array Solar and Roofing | Los Angeles area | Solar and roofing from one team |
| 7 | Semper Solaris | San Diego | Veteran-owned roofing + solar |
| 8 | Solar Optimum | Glendale | Large regional installer with premium equipment |
| 9 | Baker Electric Home Energy | Escondido | Decades of San Diego electrical experience |
| 10 | Palmetto | National | Monitoring and ongoing service plans |
1. Green Additions: Best overall residential solar company in California
Green Additions earns the top spot because it does what the failed giants didn’t: it treats every home as a design problem, not a sales quota. Based in Woodland Hills and serving homeowners across Los Angeles and Southern California, this family-owned solar contractor was built almost entirely on referrals, and it shows in how the team works.
The founder is a Solar Energy International alumnus and a NABCEP PV Associate with more than a decade of experience as a solar contractor, and the team brings over 25 years of combined expertise. The company holds California license CSLB #1127392 and is a Tesla Certified Installer, as well as an Enphase and FranklinWH battery installer.
What sets Green Additions apart:
- Honest sizing. The team reviews your usage, rate plan and roof before recommending anything, and the stated goal is the system that makes financial sense, not the largest one they can sell. Every residential solar installation is designed around your home under NEM 3.0.
- Premium equipment choice. Panels and inverters from REC, Qcells, Hyundai, Silfab, SolarEdge and Enphase, plus home battery storage from Tesla, Enphase and FranklinWH.
- Flexible ways to pay. Solar financing and lease options include a $0-down LightReach lease and GoGreen Financing loans with no dealer fees.
- A 25-year warranty covering panels, inverter, workmanship, racking and roof, plus a performance guarantee.
- One contractor for the whole home. Panel upgrades, dedicated circuits and Level 2 EV charger installation are handled by the same licensed team.
- Support after PTO. Customers get help with system monitoring, battery settings and reading their utility bills long after the crew leaves.
Customers consistently mention the same thing: personal attention. One homeowner described how the team guided their battery project through SCE approval and delivered a clean installation; another said Green Additions taught them how to compare brands and came in significantly below the big-name quotes. See a real customer case study for the full story.
Best for: Southern California homeowners who want a custom-designed solar and battery system, honest advice and a local team that stays involved.
2. Sunrun
Sunrun is the largest residential solar company in the United States and one of the few national brands that emerged from the shakeout stronger. Most of its customers choose leases or power purchase agreements rather than buying outright, and it has leaned heavily into batteries under NEM 3.0.
Best for: Homeowners anywhere in California who prefer a subscription model with a very large company behind it. Ask for the full escalator schedule in writing.
3. Tesla Energy
Tesla sells solar panels and the Powerwall through a streamlined, online-first process. Buying both from one brand keeps the system simple and the app experience seamless.
Best for: Homeowners who want a Powerwall-centered system and are comfortable with a standardized, low-touch buying experience.
4. OC Solar
Irvine-based OC Solar has been installing since 2016 and holds Tesla’s Powerwall Premier and Solar Roof Premier certifications. ConsumerAffairs named it the best overall solar company in Los Angeles in its 2026 guide.
Best for: Orange County and LA homeowners focused on Tesla equipment.
5. Sunergy
Lake Forest’s Sunergy was named EnergySage’s 2026 California Installer of the Year, a strong signal of customer satisfaction in the country’s most competitive solar market.
Best for: Homeowners who shop through marketplaces and value verified customer feedback.
6. American Array Solar and Roofing
American Array combines solar, batteries and roofing and holds a high review volume on EnergySage. It is certified for both Tesla Powerwall and Enphase systems.
Best for: Homes that need a roof replacement at the same time as solar.
7. Semper Solaris
Veteran-founded and San Diego-based, Semper Solaris treats roofing and solar as core businesses, with locations across Southern California and the Bay Area.
Best for: Military families and homeowners bundling a new roof with solar.
8. Solar Optimum
Glendale’s Solar Optimum is one of the larger regional installers in Southern California, offering solar, batteries and roofing with an emphasis on premium equipment.
Best for: Homeowners who want an established regional company with a long review history.
9. Baker Electric Home Energy
Baker grew out of a long-established electrical contracting business and has decades of experience in SDG&E territory, where permitting and interconnection are notoriously complex.
Best for: San Diego County homeowners.
10. Palmetto
Palmetto pairs solar with a technology platform for monitoring and optional service plans, working with local installation partners.
Best for: Homeowners who want a dashboard and a defined service relationship. Ask which local partner actually installs your system.
How to choose the right solar company for your home
- Verify the license at the CSLB website and confirm it matches the company on your contract.
- Ask who installs. In-house crews or trusted local teams mean clearer accountability.
- Get a line-item quote with exact panel, inverter and battery models.
- Check the incentive language. Nobody should promise the 30% residential tax credit in 2026.
- Get the workmanship warranty in writing. Manufacturers cover equipment; the installer covers labor.
- Ask about life after installation. Who helps when your app goes offline or your bill looks wrong?
Not sure where to start? Book a free solar savings analysis and get a design built around your actual bill.
Frequently asked questions
Who is the best residential solar company in California in 2026?
Green Additions tops our list for custom design, premium equipment, a 25-year warranty and hands-on support. Sunrun suits homeowners who prefer a lease from a national brand, and Tesla suits those who want an all-Tesla system.
Is solar still worth it in California in 2026?
For most homeowners, yes, especially on SCE, PG&E or SDG&E, where electricity rates are among the highest in the country. Under NEM 3.0, the best returns come from right-sized systems paired with a battery.
Is there still a federal solar tax credit?
The 30% residential credit ended December 31, 2025. Leases and certain financing structures can still pass incentive value to homeowners, so ask your installer what applies to you.
Do I need a battery with solar in California?
Under NEM 3.0 a battery usually improves savings by storing midday solar for expensive evening hours. It also keeps essential circuits running during outages.
How long does solar installation take?
The physical install typically takes one to a few days. Design, permits, inspection and utility approval usually add several weeks.
What happens if my installer goes out of business?
Manufacturer warranties on panels, inverters and batteries generally continue, but the workmanship warranty may be lost. That’s why choosing a stable, reputable installer matters.
For more answers, see our solar FAQs, explore the Learning Center, or browse more solar articles.
