Option One Solar Reviews (2026): Apple Valley Installer With a 25-Year Warranty

Option One Solar is a smaller California regional installer serving the High Desert (Apple Valley area) and extending into the Inland Empire and parts of LA County. The company has a 50+ year electrical pedigree in the family that owns it. Customer reviews are consistently strong — Yelp runs 4.9/5 in several listings, and the company actively discourages PPAs and leases in favor of ownership. The 25-year bumper-to-bumper warranty including labor is unusually comprehensive.

For reviews of other solar companies, see all California solar company reviews.

Footprint and Profile

Option One operates from Apple Valley. The company's own service-area page (optiononesolar.com, accessed September 2026) lists 65 cities across four Southern California counties — San Bernardino (20 cities), Riverside (20), San Diego (19), and Orange (6) — and does not currently list Los Angeles County. Ten of those 65 cities have non-standard utility arrangements (a different serving utility, split territory, or community-choice generation) that can change your savings estimate. The company describes its list as “not a fence” and says it will still evaluate a project just past the mapped edge on request. The company is intentionally small and locally focused. Not a 10-state operation chasing scale. That's part of why the service quality holds.

Equipment and Installation

Option One does not manufacture panels. The company installs Tier-1 options, Enphase microinverters, SolarEdge alternatives on request, Hyundai and other premium panels, Tesla Powerwall batteries are common. Install-day is typically clean and on-schedule. Full project timelines are among the faster in our California comparison.

Reviews and Reputation

• Yelp: 4.9/5 in the strongest listings. Genuinely exceptional for residential solar.
• BBB: Limited complaints given company scale.
• Local Google: Consistently strong.

Common Complaints

Complaint volume is genuinely low. The occasional friction points are:

• Rare reports of bait-and-switch on contract amendments (check that final contract matches initial quote).
• Smaller company means pricing isn't always the absolute lowest — larger competitors can undercut on certain jobs.

Financing — Ownership Only

Option One is unusual in residential solar: the company actively discourages PPAs and leases. Cash and loans are the focus. That used to mean capturing the 30% federal credit; it no longer does, because IRC § 25D does not apply to expenditures made after December 31, 2025. What ownership still buys you is no 20-year contract complicating a future home sale and cleaner total cost-of-ownership math. Whether this fits your cash flow is a separate question, if $0-down lease/PPA is a must, Option One isn't the right pick.

Utility records match the ownership-first model. Option One Solar (CSLB #985340) is the installer on 200 residential systems approved at PG&E, SCE and SDG&E in 2025, 151 of them in San Bernardino County; 87% included a battery and 1% were leases or PPAs (California Distributed Generation Statistics, CPUC interconnection data through May 31, 2026, downloaded September 24, 2026).

For customer-owned systems without a battery, 1 to 25 kW, approved from January 2025 through May 2026, its reported median price was $3.31 per watt, but on only 37 systems. The statewide median on the same basis was $4.14.

Option One's own site names three specific paths, all built around ownership rather than a recurring bill to the installer (optiononesolar.com, accessed September 2026):

• $0-down ownership loan — a fixed monthly payment with no money due at signing; the site's own worked example shows 5.49% APR over 20 years, a $206/month payment on a roughly $27,200 system.
• Cash or home equity — the lowest lifetime cost, with no finance charge, and eligible for the same discount program below.
• 25% Discount Program — framed on the site as a “Tax Credit Replacement” for eligible homeowners: a one-time price reduction, not a monthly credit, available with cash or loan. The site doesn't define eligibility criteria; ask the company directly what qualifies you.

Separately, Option One offers what it calls a Prepaid PPA: one lump payment, no monthly bill, no escalator, the same 25% discount applied up front, and the system's ownership transfers into your name at year six (optiononesolar.com, accessed September 2026). The company is explicit that this differs from a conventional lease or PPA: “We have never sold a conventional lease or PPA, and we never will.” For how these financing structures compare generally, see our lease vs. PPA vs. loan vs. cash comparison.

Warranty, 25-Year Bumper-to-Bumper

Option One's headline warranty covers equipment, workmanship, and, critically, labor for 25 years. That's rare. Most California installers offer 25-year manufacturer equipment warranties plus a separate, shorter workmanship warranty that excludes labor costs on repair visits. Option One rolling everything including labor into a single 25-year term is meaningfully more comprehensive — if you have faith in the company still being there in year 20. The company's own pages do not separately state a production guarantee or a roof/watertight warranty the way some competitors do; panel, inverter, and battery hardware carry their own manufacturer warranties underneath the workmanship coverage (optiononesolar.com, accessed September 2026). Option One also says it will pursue manufacturer warranty claims on a customer's behalf even for systems it didn't originally install.

License and Verification

Option One Solar's own site lists CSLB license #985340, classifications C-10 (Electrical) and C-46 (Solar) (optiononesolar.com, accessed September 2026). It is also the number reported for Option One Solar on utility interconnection applications in California DG Stats (CPUC), data through May 31, 2026. On CSLB's license lookup (checked September 24, 2026), #985340 belongs to Option One Corporation dba Option One Solar in Apple Valley and is current and active, expiring July 31, 2027. Status can change, so check it again using the CSLB lookup below before signing anything. For what else to check beyond the number itself, see our full contractor-verification walkthrough.

How a Repair or Service Call Works

Option One describes a four-step process for an existing system, including ones it didn't install (optiononesolar.com, accessed September 2026): someone from the Apple Valley office calls back within one business day to book the visit; a technician tests the inverter, panels, wiring, and monitoring end to end; findings and repair costs go in writing; and you decide, with no pressure or obligation to proceed. The company markets this specifically to owners of “orphaned” systems from installers that are no longer operating, and says it will pursue existing manufacturer warranty claims on your behalf even though it didn't sell the equipment.

On a home sale: an owned system (cash or loan) transfers like any other home improvement — no separate Option One process is described, because none is needed. The Prepaid PPA is structured so there's no ongoing payment stream to assume if you sell before the year-six ownership transfer; get that in writing from Option One directly, since no formal transfer document is published on the site.

Questions to ask before you sign:

• What exactly qualifies a homeowner for the 25% Discount Program, and is that confirmed in writing before the proposal is finalized?
• For the $206/month loan example, what system size, panel count, and rate does that actually assume for your roof — ask for your own numbers, not the site's illustration.
• If you're in one of the ten cities Option One flags for non-standard utility arrangements, how does that change your bill savings estimate?
• Is your project inside the four-county area the company currently publishes, or will it need a case-by-case yes?
• For the Prepaid PPA, what happens in writing if you sell before year six?

When Option One Makes Sense

Strong pick for High Desert, Inland Empire, and eastern LA County homeowners who value ownership, a long comprehensive warranty, and a small-company service experience. Less compelling if you're outside the service area, if you need $0-down lease/PPA, or if absolute-lowest cash price is your only criterion.

Frequently Asked Questions