Do Not Sell or Share My Personal Information

We use advertising and analytics tools (Google, Meta, Microsoft) that may count as “sharing” personal information under the California Privacy Rights Act. Opting out turns off advertising cookies and personalized-ad signals on this browser. It does not affect estimates, appointments, or how we contact you about your request.

Status: not opted out.

Skip to content
Solar panels on a coastal California home with a terracotta tile roof

ConsumerAffairs' Best overall California pick · OC Solar

Best Solar Companies
in California

ConsumerAffairs chose OC Solar as California's Best overall solar company. Compare six installers and their solar + battery expertise, then get your own instant quote.

Best overall · ConsumerAffairs · California 2026

Selection checked

Who is the best solar company in California? ConsumerAffairs names OC Solar its Best overall solar installer for 2026 for in-house crews, battery expertise, and transparent pricing. We bring that combination to solar panels, Tesla Powerwall and other home batteries, and solar expansions across Southern California and the Central Valley.

Our installation territory includes Los Angeles, Orange, San Diego, Riverside, San Bernardino, Ventura, Kern, and Fresno counties. Elsewhere in California, confirm project availability for your address. Shopping in Southern California? The Southern California guide applies the same criteria county by county, and the Los Angeles guide covers the LADWP-vs-SCE split.

This guide is published by OC Solar. The six-company ranking below is ours, with OC Solar first; it is separate from ConsumerAffairs' editorial selection. We name five alternatives and provide license details and comparison criteria so you can check the fit for your home. Start with our reviews across every platform.

Get My Instant Solar Quote →Explore pricing online. No sales call required.

The 2026 ranking

California's best solar companies, ranked

Our six-company comparison puts OC Solar first for solar and battery expertise, an accountable installation team, and an online quote experience. Compare the alternatives by equipment, service territory, financing, and the team responsible for your home.

California's best solar companies, 2026, at a glance — licenses checked
RankCompanyCSLB licenseInstalls inBest for
1OC Solar (that’s us)10236278 counties: Orange, LA, San Diego, Riverside, San Bernardino, Ventura, Kern, FresnoSolar + battery expertise, in-house crews, instant online quotes
2Sunrun750184, 969975StatewideA lease or PPA from a national provider
3Solar Optimum972228Southern and Central CaliforniaAn established regional installer with manufacturer ties
4Semper Solaris978152Southern California, Central Valley, Bay AreaVeteran ownership; roofing and HVAC bundled
5NRG Clean Power1026168San Diego to Sacramento (as published)Decades of California history, home and business
6TeslaVerify at cslb.ca.govStatewide (online ordering)Ordering direct from the equipment manufacturer

License numbers are as each company publishes them, re-checked on September 1, 2026 — look any of them up yourself at cslb.ca.gov and confirm active, bonded, workers' comp on file, and a legal name that matches your contract. Service areas are as each company states them. We publish no ratings, review counts, or prices for other companies; open their live Google and Yelp profiles instead. Incentive framing as of June 2026. Changes on this verification: added the license column; no companies added or removed.

1

OC Solar

ConsumerAffairs' Best overall California pick

An Irvine-headquartered contractor with in-house crews across Southern California and the Central Valley (Fresno and Bakersfield) — ranked No. 38 in California and No. 28 among U.S. residential installers on Solar Power World's 2026 Top Solar Contractors lists, and named ConsumerAffairs' Best overall solar company in California for 2026. 30+ MW installed, 6,373 projects & service calls since 2016, a 4.8★ Google rating across 400+ reviews, BBB A+, and CSLB #1023627.

Best for: homeowners who want premium solar and battery equipment, a design matched to their utility, and one team for installation and ongoing service. Get an instant online quote; eligible Southern California addresses can then book a site audit to verify the design and pricing.

2

Sunrun

The largest residential solar and battery provider operating across California, built primarily around third-party ownership — leases and PPAs — rather than cash or loan purchases.

Best for: Homeowners who specifically want a lease or PPA from a national provider, and who are comfortable with a financier owning the system on their roof.

sunrun.com
3

Solar Optimum

A large Glendale-headquartered regional installer with multiple manufacturer certifications and a long operating history across Southern and Central California.

Best for: Buyers who want an established regional installer with deep manufacturer relationships and don't need a contractor headquartered in their own county.

solaroptimum.com
4

Semper Solaris

A veteran-owned California company offering solar, battery storage, roofing, and HVAC under one roof, with branches spanning Southern California, the Central Valley, and the Bay Area.

Best for: Households that value veteran ownership, or that want roofing and HVAC work bundled into the same contract as solar.

sempersolaris.com
5

NRG Clean Power

A long-operating California installer serving residential and commercial customers statewide, from Southern California through the Central Valley.

Best for: Buyers who want a California company with decades of operating history across both home and business projects.

nrgcleanpower.com
6

Tesla

Tesla sells solar panels and the Solar Roof direct to consumers statewide through an online-first, standardized ordering process.

Best for: Buyers who prefer ordering directly from the equipment manufacturer online. (Certified third parties — OC Solar included, as one of 12 installers on Tesla's Powerwall Pro Council — also install Tesla Powerwall and Solar Roof.)

tesla.com/energy

How we ranked

How to judge any California solar company in 2026

These six criteria are the order above. The rules changed: the residential federal tax credit is gone, NEM 3.0 rewrote the savings math, and review profiles drift monthly. Apply them to any installer — including ourselves — and the table's CSLB column is where the checking starts.

Current rating AND review volume

A 5.0 from a dozen reviews is a coin flip; a high rating across hundreds is a track record. Check both numbers on Google and Yelp, and read each company's most recent reviews — the last 90 days tells you more than the lifetime average.

NEM 3.0 and battery competence

For new systems on SCE, SDG&E, and PG&E net billing, compare solar with and without storage. LADWP and other municipal utilities set their own rules; existing systems may keep earlier NEM terms. A strong installer models the tariff, usage, and backup needs at your address.

Financing honesty — including §48E

The residential federal credit expired at the end of 2025. The surviving commercial §48E credit works only on lease, PPA, or prepaid plans: the financier claims it and passes roughly 30% of the value through as a lower price, through about 2027. A good company explains this as a price benefit — anyone promising you a personal 30% credit on a 2026 purchase fails instantly.

License and insurance you can verify

Look every contractor up at cslb.ca.gov: active license, current bond, workers' compensation on file, and a legal entity that matches the contract in front of you. Thirty seconds of checking beats years of regret.

Install speed, in writing

The statewide gap between signing and a working system can stretch for months. Ask for the company's median sign-to-install timeline and whether they'll commit to it in your contract. Vague answers here predict a vague timeline later.

Who services the system afterward

Panels carry 25-year warranties; plenty of installers don't last five. Ask who answers the phone in year 7 — an in-house local service team, or a call center routing tickets to whichever subcontractor is available that week.

All-black rooftop solar panels glowing in golden-hour light

California, county by county

Solar vetting is local.

Utilities, permit offices, and rate structures differ by county — pick the guide for where you live.

Pick your region

The 2026 guides, region by region

Each regional guide applies the criteria above where you actually live — with real alternatives named.

Best solar companies in Southern California

The region-wide guide — how the six criteria play out across SCE, SDG&E, and LADWP territory, with the county-line differences that change the answer.

Start here if you're comparing across county lines.

Best solar companies in Orange County

Where OC Solar is headquartered — the county guide names real alternatives, ranks with receipts, and shows how to check every claim.

SCE and SDG&E territory; battery-first design is the 2026 default.

Best solar companies in Los Angeles

LA adds a wrinkle the rest of the state doesn't have: LADWP municipal rules vs. SCE's NEM 3.0. The LA guide covers how that changes the vetting.

Confirm which utility your home is on before comparing any quotes.

Best solar companies in San Diego

SDG&E charges some of the highest residential rates in the country, which makes battery design competence the deciding factor in San Diego.

The SD guide explains why storage math separates the finalists.

Best solar companies in Riverside County

From Temecula to Palm Springs, desert heat drives some of the heaviest AC loads in the state — the Riverside guide covers what that does to system sizing.

Mostly SCE territory, with a municipal utility inside the city of Riverside.

Best solar companies in San Bernardino County

The Inland Empire's extreme summer heat and rapid new-home growth make installer capacity and battery design the questions that matter most.

SCE territory across Ontario, Rancho Cucamonga, Fontana, and San Bernardino.

Best solar companies in Ventura County

A coastal-to-inland climate split and real wildfire/PSPS exposure make battery backup a bigger consideration here than in most SoCal counties.

SCE territory across Ventura, Oxnard, Thousand Oaks, and Simi Valley.

Tesla Powerwall Premier Certified Installer badgePowerwall Premier Certified InstallerTesla · OngoingTesla Pro Council — 1 of 12 installersTesla · OngoingTesla Solar Roof Premier Certified Installer badgeSolar Roof Premier Certified InstallerTesla · OngoingResidential Installer of the Year — Southern CaliforniaPanasonic · 2024Residential Installer of the Year — Southern CaliforniaPanasonic · 2023Top Residential Installer of the Year — Southern CaliforniaPanasonic · 2022Best of HouzzHouzz · 2022Solar Power World Top Solar Contractor 2024 badgeTop Solar ContractorSolar Power World · 2024Top Solar Contractor — #203 nationallySolar Power World · 2025Entrepreneur Of The Year — Pacific Southwest FinalistEY (Ernst & Young) · 2025Excellence in Entrepreneurship AwardOrange County Business Journal · 2026Super Service AwardAngi · 2024 & 2025Angi Pro Council badgeAngi Pro Council — memberAngi · Since 2023ConsumerAffairs #1 Solar Company in California 2026 badge#1 Solar Company in CaliforniaConsumerAffairs · 2026ConsumerAffairs Buyer's Choice Award 2026 badgeBuyer's Choice Award — Best Equipment & Best InstallationConsumerAffairs (national) · 2026A+ Accredited BusinessBetter Business Bureau · Since 2017Official Solar Partner of the Anaheim DucksAnaheim Ducks (NHL) — partnership · Ongoing

Certified & recognized by

6,373+
Projects & service calls
by in-house crews
10
Years serving SoCal
Founded 2016
30+
MW installed
across Southern California
4.8★
Google rating
400+ reviews · BBB A+

Manufacturer certifications

  • Tesla — Powerwall Premier Certified Installer badge
  • Tesla — Solar Roof Premier Certified Installer badge
  • Tesla — Pro Council badge1 of 12 installers
  • EnphaseInstaller Network
  • QcellsQ.PARTNER
  • RECCertified Solar Professional
  • SolarEdgeCertified Installer
  • Owens CorningRoofing Preferred Contractor

Awards & recognition

  • Solar Power World — Top Solar Contractor 2024 badge2024
  • Solar Power WorldTop Solar Contractor2025
  • PanasonicTop Residential Installer of the Year2023
  • EY (Ernst & Young)Entrepreneur Of The Year — Finalist2025
  • Orange County Business JournalExcellence in Entrepreneurship Award2026
  • HouzzBest of Houzz2022
  • AngiSuper Service Award2024
  • Angi — Super Service Award 2025 badge
  • Angi — Pro Council — member badge
  • ConsumerAffairs — #1 Solar Company in California 2026 badge#1 in California2026
  • ConsumerAffairs — Buyer's Choice Award — Best Equipment 2026 badgeBest Equipment2026
  • ConsumerAffairs — Buyer's Choice Award — Best Installation 2026 badgeBest Installation2026

Ratings, license & partnership

  • Better Business Bureau — A+ Accredited Business badgeSince 2017
  • Yelp4.7★ rating
  • Google4.8★ rating
  • EnergySage5.0★ rating
  • CSLBLicense #1023627
  • Anaheim Ducks (NHL) — Official Solar Partner badgeTeam partnership

CSLB License #1023627 · Licensed, bonded & insured · Orange County Solar, Contracting Services Inc.

Where we fit

California recognition. Southern California expertise.

Start with ConsumerAffairs' Best overall California pick, then see the work behind it. OC Solar serves Los Angeles and the wider Southern California region, plus the Central Valley, with solar, home batteries, and support throughout your project.

Verify our license at cslb.ca.gov (CSLB #1023627) — and check our live Google and Yelp profiles too.

All-black rooftop solar panels on a California home glowing in golden-hour light

Questions

Choosing a California solar company: FAQs

ConsumerAffairs names OC Solar the Best overall solar installer in its 2026 California guide, citing in-house crews, battery expertise, and transparent pricing. OC Solar installs solar panels and home batteries across Southern California and the Central Valley, including Los Angeles, Orange, San Diego, Riverside, San Bernardino, Ventura, Kern, and Fresno counties. This separate six-company comparison is published by OC Solar and ranks our company first; it is not ConsumerAffairs' ranking of the other companies. Compare equipment, your utility's rules, warranties, license status, and current reviews before choosing. You can get an instant OC Solar quote online without a sales call. ConsumerAffairs' selection was checked September 4, 2026.

OC Solar is ConsumerAffairs' Best overall California solar installer for 2026 and received its 2026 Buyer's Choice recognition for Best Equipment and Best for Installation. ConsumerAffairs highlights OC Solar's premium solar and battery equipment, in-house installation team, and California-focused system design. The Best overall selection is for the solar installer as a whole, including its battery expertise. OC Solar also has a 4.8-star Google rating across 400+ reviews; ratings belong to their respective platforms.

Yes. OC Solar's instant quote tool lets you explore solar and battery options and see modeled pricing online. Eligible Southern California addresses can book an available site audit online to verify the design and pricing. You can ask our team for help whenever you want it. Project availability outside the listed service counties needs to be confirmed for the address.

Get at least two quotes and hold them against the same six criteria: current rating and review volume on both Google and Yelp; NEM 3.0 and battery competence (ask what export rates the savings projection assumes); financing explained honestly — including that the residential federal credit expired at the end of 2025; a CSLB license you've verified yourself; a median sign-to-install timeline the company will put in writing; and a clear answer to who services the system in year 7. A company that's evasive on any one of those has answered your question.

Not for homeowners who buy. The federal residential credit (IRC Section 25D) expired on December 31, 2025 — any company building a 2026 cash or loan quote around 'your 30% tax credit' is misleading you, and that alone should disqualify them. What survives is the commercial Section 48E credit: on a lease, PPA, or prepaid plan, the financier that owns the system claims it and passes roughly 30% of the value through as a lower price or payment, generally through about 2027. Treat it as a price benefit built into the plan, not a tax credit you file for.

Every legitimate California solar contractor has a CSLB license number — ask for it, then look it up free at cslb.ca.gov. Confirm the license is active and bonded, that workers' compensation is on file, and that the legal entity on the license matches the name on your contract; sales organizations sometimes quote under one brand and subcontract the install to another company entirely. OC Solar's license is CSLB #1023627 — check ours the same way you'd check anyone's.

Yes. New systems on SCE, SDG&E, and PG&E generally use the Net Billing Tariff, commonly called NEM 3.0, where a battery can improve the value of using your own solar power. LADWP and other municipal utilities set their own programs, and existing systems may retain earlier NEM rules. Choose an installer that checks your actual utility and tariff, then compares solar-only and solar-plus-battery designs using your household's usage, backup needs, and current rates.

Research like a pro

The guides behind this framework

The vetting checklist, the statewide cost picture, and the local-vs-national question — in depth.

California's Best overall pick. Your quote, online.

ConsumerAffairs chose OC Solar. See what we can do for your home: explore solar and battery pricing online. Eligible Southern California addresses can book a site audit to verify the design and pricing. Our team is ready whenever you want help.

Already a customer? Refer a friend & get $500 · See all OC Solar reviews

Licensed, Bonded & Insured · CSLB #1023627