Can I use California's CLRA against my solar installer?

The California Consumers Legal Remedies Act (Civ. Code 1750 et seq.) lets a consumer who suffers damage from certain enumerated unfair or deceptive practices bring an action for damages, an injunction, restitution, and other relief. Whether a solar installer's failure to honor a production guarantee fits one of the practices the CLRA lists is fact-specific and a question for a licensed California attorney. The CLRA also requires a written notice at least 30 days before bringing an action for damages. OwlWatt is not a law firm and does not provide legal advice.

What is the CLRA 30-day notice requirement?

Under Civ. Code 1782(a), at least 30 days before commencing an action for damages under the CLRA the consumer must notify the business in writing of the particular alleged violations and demand that it correct, repair, replace, or otherwise rectify the goods or services. The notice must be sent by certified or registered mail, return receipt requested. An action for injunctive relief may be commenced without this notice (Civ. Code 1782(d)). This is general statutory information, not legal advice; confirm the current text and how it applies with a licensed attorney.

Does the UCL (Section 17200) give me damages and attorney's fees?

California's Unfair Competition Law (Bus. & Prof. Code 17200) reaches any unlawful, unfair, or fraudulent business act or practice. The relief a court may order in a private UCL action is generally limited to injunctions and restitution under Section 17203 — the UCL itself does not provide damages or attorney's fees. Fee recovery in a UCL case typically depends on a separate basis such as the private attorney general statute (Code Civ. Proc. 1021.5). The CLRA, by contrast, provides damages and mandatory attorney's fees to a prevailing plaintiff. Which statute or combination fits your facts is a question for a licensed California attorney. OwlWatt is not a law firm.

California CLRA & UCL Against a Solar Installer

If you're a California homeowner whose solar installer won't honor a production guarantee, two state laws come up again and again: the Consumers Legal Remedies Act (CLRA) and the Unfair Competition Law (UCL). They work differently — the CLRA can award damages and your attorney's fees but requires a notice first; the UCL is broader in what it reaches but narrower in what it pays out. This page explains what each statute says, how it can relate to a production-guarantee shortfall, and the CLRA's distinctive 30-day notice step.

A note on what this page is. This is general information about two California statutes — not legal advice. OwlWatt is not a law firm. Whether the CLRA or the UCL applies to your dispute, what your notice should say, and whether to file suit are questions for a licensed attorney in California. A licensed attorney can use your production documentation as evidence. We cite the statutes directly so you can read them yourself; statutes are also amended, so confirm the current text before relying on it.

The CLRA: Damages, Restitution, and Attorney's Fees

The Consumers Legal Remedies Act, Civil Code §1750 and following, makes a defined list of "unfair methods of competition and unfair or deceptive acts or practices" unlawful when they're undertaken in a transaction for goods or services to a consumer (Civ. Code §1770). A consumer injured by one of those listed practices can sue under §1780, which spells out the remedies:

"Any consumer who suffers any damage as a result of the use or employment by any person of a method, act, or practice declared to be unlawful by Section 1770 may bring an action against that person to recover or obtain any of the following: (1) Actual damages… (2) An order enjoining the methods, acts, or practices. (3) Restitution of property. (4) Punitive damages. (5) Any other relief that the court deems proper." — Cal. Civ. Code § 1780(a). Source: leginfo.legislature.ca.gov (verified 2026-06-19).

The provision that makes the CLRA worth invoking for a homeowner is its treatment of fees:

"The court shall award court costs and attorney's fees to a prevailing plaintiff in litigation filed pursuant to this section." — Cal. Civ. Code § 1780(e). Source: leginfo.legislature.ca.gov (verified 2026-06-19).

That fee-shifting changes the economics of a modest claim: a prevailing consumer recovers reasonable attorney's fees and costs, not just damages. A word of caution on "treble damages," which you'll see associated with the CLRA online — §1780(c) does provide treble actual damages, but only for a violation of one specific paragraph, §1770(a)(24), a narrow category. It is not a general treble-damages remedy for every CLRA violation. Whether any enhanced-damages provision could apply to your facts is exactly the kind of question to put to a licensed California attorney.

How the CLRA Can Relate to a Production-Guarantee Dispute

A production guarantee is a contract term, and an ordinary breach of contract is not, by itself, automatically a CLRA violation — the CLRA reaches the specific deceptive or unfair practices it enumerates in §1770. What can bring an installer's conduct within the statute is the deceptive character of how the system was sold or how the company behaved: for example, misrepresenting what the system would produce. Whether a particular installer's conduct fits one of the §1770 categories is fact-specific and is the judgment a licensed California attorney makes — not something OwlWatt or this page can decide for you. What OwlWatt provides is the factual foundation: a documented, weather-adjusted production shortfall measured against your contract's guarantee.

The CLRA 30-Day Notice (Section 1782)

Like Massachusetts' Chapter 93A, the CLRA requires a written demand before you can sue for damages. Civil Code §1782 states it directly:

"Thirty days or more prior to the commencement of an action for damages pursuant to this title, the consumer shall do the following: (1) Notify the person alleged to have employed or committed methods, acts, or practices declared unlawful by Section 1770 of the particular alleged violations… (2) Demand that the person correct, repair, replace, or otherwise rectify the goods or services… The notice shall be in writing and shall be sent by certified or registered mail, return receipt requested, to the place where the transaction occurred or to the person's principal place of business within California." — Cal. Civ. Code § 1782(a). Source: leginfo.legislature.ca.gov (verified 2026-06-19).

Three things follow:

The notice is a prerequisite to damages. Section 1782(b) provides that no action for damages may be maintained if the business gives (or agrees in a reasonable time to give) an appropriate correction or remedy within 30 days of receiving the notice. A well-documented shortfall is what gives the notice teeth.
Injunctive relief doesn't need the notice. Section 1782(d) allows an action for injunctive relief to be commenced without complying with the 30-day notice — and the complaint can later be amended to add damages after the notice is given.
Form matters. The notice must be in writing and sent by certified or registered mail with return receipt. Because these are formal requirements, have a licensed California attorney prepare or review the notice.

OwlWatt's separate free demand-letter template is a generic starting point for documenting a shortfall in writing. A CLRA §1782 notice has specific legal requirements, so in California a licensed attorney should prepare or review it.

The UCL (Section 17200): Broad Reach, Narrow Remedy

The Unfair Competition Law is deliberately broad in what it prohibits:

"As used in this chapter, unfair competition shall mean and include any unlawful, unfair or fraudulent business act or practice and unfair, deceptive, untrue or misleading advertising…" — Cal. Bus. & Prof. Code § 17200. Source: leginfo.legislature.ca.gov (verified 2026-06-19).

But the relief a court may order in a private UCL action is limited. Section 17203 authorizes courts to enjoin unfair competition and to restore money or property acquired by it:

"…The court may make such orders or judgments… as may be necessary to prevent the use or employment by any person of any practice which constitutes unfair competition… or as may be necessary to restore to any person in interest any money or property, real or personal, which may have been acquired by means of such unfair competition." — Cal. Bus. & Prof. Code § 17203. Source: leginfo.legislature.ca.gov (verified 2026-06-19).

In plain terms: the UCL gives injunctions and restitution, not damages — and the UCL itself does not award attorney's fees (a prevailing plaintiff would need to rely on a separate basis for fees, such as the private attorney general statute, Code Civ. Proc. §1021.5, whether that applies is for counsel to assess). This is why the two statutes are often pleaded together: the UCL for its broad reach, the CLRA for damages and mandatory fees. Which combination fits your facts is a question for a licensed California attorney.

What This Means in Practice

If you're a California homeowner facing a production-guarantee shortfall, the steps are:

Document the shortfall. You need a specific, weather-adjusted figure — guaranteed kWh, actual kWh, and the dollar amount — not a vague complaint about low production. That documented injury is what makes a CLRA notice (and any later UCL restitution claim) concrete.
Talk to a licensed California attorney. The CLRA reaches only the practices it lists, the §1782 notice has formal requirements, and the UCL/CLRA interplay is exactly what a consumer attorney sorts out. An attorney can also tell you whether your facts support a statutory claim or a straight breach-of-contract claim.
Send a compliant §1782 notice (for damages). Identify the violations, demand a remedy, send it by certified or registered mail, and attach your documentation. Then the 30-day clock runs.

If you'd rather understand the general escalation path first, see escalating a solar production claim, which also lists the California Attorney General's Public Inquiry Unit / Consumer Protection Section — reachable at (800) 952-5225, with a complaint form at oag.ca.gov. For the broader California solar context, see solar in California.

Sources

All statutory quotations on this page were verified against the official California codes (leginfo.legislature.ca.gov) on 2026-06-19. Statutes are amended; confirm the current text before relying on it.

A Statutory Claim Starts With a Documented Injury.

The CLRA asks you to identify the harm and demand a remedy; the UCL's restitution turns on what you actually lost. OwlWatt produces exactly that foundation: a weather-adjusted, dollar-denominated production shortfall measured against your contract's guarantee, using NREL's PVWatts model. OwlWatt is not a law firm and does not provide legal advice; a licensed California attorney can use this documentation as evidence.

Start free and document your shortfall.

Using California Consumer-Protection Law (CLRA & UCL) Against a Solar Installer