Every criterion in this guide, expanded into a working checklist.
2026 Buyer's Guide · Published by OC Solar
Best Solar Companies in
Orange County
Six criteria for judging any installer, a ranked list with real alternatives named, and a way to verify every single claim yourself — no anonymous 'review site' games.
Disclosed bias
Updated June 2026
This guide is published by OC Solar.
Yes, we rank ourselves first — here's exactly why, and how to verify every claim yourself. Our own numbers below link to public sources, and for every competitor we tell you to check their live Google and Yelp profiles instead of trusting stats we wrote down that could go stale. If you'd rather start with someone else's quote, we'll review it for free — no pressure, no obligation.
The criteria
How to judge a solar company in 2026
The rules changed: the residential federal tax credit is gone, NEM 3.0 rewrote the savings math, and review profiles drift monthly. These six criteria are how we'd evaluate any installer — including ourselves.
Current rating AND review volume
A 5.0 from 12 reviews is a coin flip; a 4.9 from several hundred reviews is a track record. Check both numbers, on both Google and Yelp, and read the most recent reviews — not the pinned ones. A company's last 90 days tells you more than its lifetime average.
NEM 3.0 and battery competence
Under NEM 3.0, daytime export credits are a fraction of what they were, so savings now depend on storing and self-consuming your own power. Any installer who quotes a solar-only system without explaining the battery math is either behind the curve or hoping you are.
Financing options — including the §48E pass-through
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 or payment, through about 2027. A good company explains this as a price benefit, not 'your tax credit' — and anyone promising you a personal 30% credit on a 2026 purchase fails this test instantly.
License and insurance you can verify
Don't take a license claim on faith. Look the contractor up at cslb.ca.gov: active license, current bond, workers' compensation on file. Confirm the licensed contractor of record is the company you're actually signing with — not a subcontractor you've never met.
Install speed, in writing
The industry-wide 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 5. Ask who answers the phone in year 7 — a local service department, or a national call center routing tickets to whichever subcontractor is available. A local HQ with its own crews is the single best predictor of post-install support.
Orange County, actually
Built where you live.
Every install on this page is a real Southern California roof — not stock photography.
The 2026 list
Orange County's best solar companies, ranked
One disclosed-bias pick at #1 with receipts, then five real alternatives described neutrally. Every company here is worth a quote — get more than one.
1
OC Solar
That's us — judge accordinglyIrvine-headquartered, founded 2016, serving all of Orange County with in-house crews. Here are the numbers — each one is public, and each one is checkable in under a minute.
4.9★
Google rating
400+ reviews
4.7★
Yelp rating
451 reviews
A+
BBB rating
Accredited profile
5,000+
Installs completed
Since 2016
30 days
Median sign-to-install
60-day median to PTO
#1023627
CSLB license
Verify at cslb.ca.gov
Local Orange County headquarters, our own crews
We're headquartered in Irvine and install across Orange County with in-house teams — the person who services your system in year 7 works for the company that sold it to you. See our full case at /why-oc-solar.
30-day median sign-to-install
Half of our customers go from signed contract to installed system in 30 days or less, with a 60-day median to permission-to-operate. Ask any company you're comparing for the same two numbers, in writing.
Tesla Powerwall Premier Certified + Tesla Solar Roof installer + Owens Corning Roofing Preferred Contractor
Manufacturer certifications are third-party verifiable — they mean the manufacturer audits our installs, not just that we buy their hardware. The roofing credential matters because solar done right starts with the roof under it.
ConsumerAffairs #1 solar company in California
Plus ConsumerAffairs national Buyer's Choice awards for Best Equipment and Best Installation, Angi Super Service 2024 & 2025, and Solar Power World Top Contractor recognition. Each award is published by the issuing organization — search them, don't take our word.
Verify our license at cslb.ca.gov (CSLB #1023627) — and yes, check our live Google and Yelp profiles too. The same rule applies to us.
2
Solar Optimum
A large regional installer headquartered in Glendale, with multiple manufacturer certifications and a long operating history across Southern California.
Best for: Homeowners who want a big, established regional installer and don't mind a company based outside Orange County.
We don't publish other companies' ratings or review counts — they change, and stale numbers mislead. Check their live Google and Yelp profiles before deciding, and visit solaroptimum.com directly.
3
Semper Solaris
A veteran-owned California company offering solar, roofing, and HVAC under one roof.
Best for: Households that value veteran ownership and want roofing or HVAC work bundled with their solar project.
We don't publish other companies' ratings or review counts — they change, and stale numbers mislead. Check their live Google and Yelp profiles before deciding, and visit sempersolaris.com directly.
4
NRG Clean Power
A long-operating California installer serving residential and commercial customers across the state.
Best for: Buyers who want a California company with decades of operating history on both home and business projects.
We don't publish other companies' ratings or review counts — they change, and stale numbers mislead. Check their live Google and Yelp profiles before deciding, and visit nrgcleanpower.com directly.
5
Sunrun
A national residential solar and battery company, built primarily around third-party-ownership (lease and PPA) financing.
Best for: Homeowners who specifically want a lease or PPA from a large national provider rather than a local contractor relationship.
We don't publish other companies' ratings or review counts — they change, and stale numbers mislead. Check their live Google and Yelp profiles before deciding, and visit sunrun.com directly.
6
Tesla
Tesla sells solar panels and the Solar Roof direct to consumers with an online-first, standardized ordering process.
Best for: Buyers who prefer ordering directly from the equipment manufacturer online. (Note: certified third parties — OC Solar included — also install Tesla Powerwall and Solar Roof.)
We don't publish other companies' ratings or review counts — they change, and stale numbers mislead. Check their live Google and Yelp profiles before deciding, and visit tesla.com/energy directly.
Powerwall Premier Certified InstallerTesla · OngoingTesla Pro Council — 1 of 12 installersTesla · Ongoing
Solar 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 · 2022
Top 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 & 2025
Angi Pro Council — memberAngi · Since 2023
#1 Solar Company in CaliforniaConsumerAffairs · 2026Buyer's Choice Award — Best Equipment & Best InstallationConsumerAffairs (national) · 2026A+ Accredited BusinessBetter Business Bureau · Since 2017Official Solar Partner of the Anaheim DucksAnaheim Ducks (NHL) — partnership · OngoingCertified & recognized by
5,000+
Installs completed
by in-house crews
10
Years serving SoCal
Founded 2016
50+
MW installed
across Southern California
4.9★
Google rating
400+ reviews · BBB A+
Manufacturer certifications
1 of 12 installers- EnphaseInstaller NetworkStorage-certified · IQ Battery
- QcellsQ.PARTNERAuthorized installer
- RECCertified Solar ProfessionalProTrust warranty program
- SolarEdgeCertified Installer
- Owens CorningRoofing Preferred Contractor
Awards & recognition
2024- Solar Power WorldTop Solar Contractor2025#203 nationally
- PanasonicTop Residential Installer of the Year2023Southern California
- EY (Ernst & Young)Entrepreneur Of The Year — Finalist2025Pacific Southwest
- Orange County Business JournalExcellence in Entrepreneurship Award2026
- HouzzBest of Houzz2022
- AngiSuper Service Award2024
#1 in California2026- Best Equipment2026
- Best Installation2026
Ratings, license & partnership
Since 2017- Yelp4.7★ rating451 reviews
- Google4.9★ rating400+ reviews
- CSLBLicense #1023627Licensed · Bonded · Insured
Team partnership
CSLB License #1023627 · Licensed, bonded & insured · Orange County Solar, Contracting Services Inc.
Bring this to every appointment
Questions to ask ANY installer — including us
A good company answers all nine without flinching. Evasion on any one of them is your answer.
What is your CSLB license number — and is the licensed contractor of record on my permit you, or a subcontractor?
What's your median sign-to-install timeline, and will you put a timeline commitment in my contract?
What export rates does my savings projection assume under NEM 3.0 — and what do my savings look like without a battery?
Which exact panel, inverter, and battery models are written into the contract? ("Premium panels" is not a model number.)
If this is a lease, PPA, or prepaid plan: exactly how is the ~30% commercial §48E value reflected in my price or payment? It's the financier's credit, not mine — show me the lower number it produces.
Is there a dealer fee baked into my financed price, and what's the cash price for comparison?
Does my monthly payment have an annual escalator? What's the total over the full term?
Who holds the workmanship warranty, and who physically answers the phone if a panel underperforms in year 7?
Can you show me recent installs — with addresses or photos — in my city, not just "in the area"?
0510152025 yr
Hover or tap a coverage layer to read what it includes.
Already collected quotes?
Get a free second opinion before you sign.
Send us any company's proposal — including the ones on this list — and a local advisor will review the price, equipment, NEM 3.0 math, and financing fine print honestly. If your quote is strong, we'll say so.
Or call 949-427-8817 · Licensed, Bonded & Insured · CSLB #1023627
From sunrise to midnight
Your sunlight, saved for the night.
Your power costs the most from 4–9 PM — exactly when you're home.
Solar roof
Powerwall 3
Electrical panel
Patio heater
Living room
Kitchen
All day, the sun banks energy.
Your roof overproduces at midday — the Powerwall stores every spare kilowatt-hour.
The sun sets. Rates spike. You don't notice.
At the 4–9 PM peak, your home quietly switches to the energy you stored for free.
The battery powers the night.
Through the electrical panel, stored sunlight runs the kitchen, the lights, the heat — and backs it all up if the grid fails.
Proof you can see
Powering homes across Southern California
Every dot is one real OC Solar project or service call — thousands of them, blanketing Orange County, Los Angeles, the Inland Empire, Ventura County, San Diego, and the desert. Hover any dot for the project type, area, and year — chances are we've already powered a home near you.
6,373projects & service calls
across SoCal and beyond
across SoCal and beyond
Per our company records as of June 2026 — every project and service call we've taken on, excluding cancellations. Each dot is one real record (a couple dozen without a mappable location count toward the total but aren't shown); positions are approximated to the neighborhood to protect customer privacy.
Irvine HQ Solar project Service callEach dot = one real record
Find your city →Loading map…
Hover a dot for project details
Real reviews, multiple platforms
We show the whole picture
Ratings come straight from the platforms homeowners trust. We respond to criticism publicly, because honesty converts better than spin.
Read the source, not a hand-picked quote wall.
Until the live review widget is configured, the site links customers straight to the review platforms. That keeps the proof current and avoids publishing unattributed quotes.
Questions
Choosing a solar company: FAQs
It depends on what you weight most — speed, financing structure, battery expertise, or bundled services like roofing. This guide is published by OC Solar and we rank ourselves first based on numbers anyone can check: a 4.9-star Google rating across 400+ reviews, 4.7 on Yelp (451 reviews), a BBB A+ rating, 5,000+ installs since 2016, and a 30-day median sign-to-install timeline. We also name five real alternatives — Solar Optimum, Semper Solaris, NRG Clean Power, Sunrun, and Tesla — because an informed buyer is the customer we want. Check every company's current Google and Yelp profiles before deciding.
More 2026 buyer's guides: Best Solar Companies in California · Best Solar Companies in Los Angeles · Best Solar Companies in San Diego
Research like a pro
The guides behind this ranking
The vetting framework, the local cost picture, and the local-vs-national question — in depth.
What OC systems actually cost in 2026, county-scoped.
What actually differs after install day.
Compare us against anyone on this list.
Get a free estimate from OC Solar, put it next to any other quote, and check every number we've published. We're confident in how that comparison ends — that's why we wrote the guide.
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Licensed, Bonded & Insured · CSLB #1023627