Going solar is one of the biggest investments you can make for your home. In California alone, the average residential solar system costs between $15,000 and $25,000 before incentives. With that kind of money on the line, choosing the right contractor matters — a lot.

Unfortunately, the solar industry has its share of bad actors. The California Contractors State License Board (CSLB) has issued multiple warnings about misleading solar advertisements, door-to-door sales tactics, and flyers that impersonate utility companies. Some of these marketing materials reference real programs like the Self-Generation Incentive Program (SGIP) but make promises that don't match how the program actually works.

The good news? California has strong consumer protection infrastructure. You just need to know where to look. This checklist will help you verify any solar contractor before you sign anything.

Step 1: Check Their CSLB License

Every solar contractor operating legally in California must hold an active contractor's license issued by the CSLB. The relevant license types for solar work include:

• C-46 (Solar Contractor): Specifically for installing, modifying, maintaining, and repairing thermal and photovoltaic solar energy systems.

• C-10 (Electrical Contractor): Can perform electrical work associated with solar installations.

• A (General Engineering) or B (General Building): Can perform solar work under certain conditions.

How to verify: Visit CSLB's license check page and search by business name or license number. Look for:

• License status: must say "Active"

• License classification: should include C-46, C-10, A, or B

• Workers' compensation insurance: must be current

• Bond status: must be current

• Any disciplinary actions or complaints

Red flag: If a company won't share their CSLB license number upfront, that's a problem. CSLB explicitly urges consumers to verify license status before hiring.

Step 2: Verify Their SGIP Developer Status

If a contractor claims they can help you access SGIP rebates for battery storage, verify they're actually authorized to do so. The SGIP program requires that all applications designate a registered Developer — this is the entity that submits the rebate application on your behalf.

How to verify: Check the SGIP Approved Developer List on the official SGIP portal (selfgenca.com). This is the only authoritative source. Note that the CPUC explicitly states it does not endorse or recommend any installers on this list — being listed simply means they're registered to participate.

Red flag: A company that claims SGIP eligibility but doesn't appear on the Approved Developer List may not be able to process your rebate application.

Step 3: Check BBB Accreditation and Reviews

The Better Business Bureau (BBB) provides business profiles that include accreditation status, customer reviews, complaint history, and resolution patterns.

How to verify: Search for the company on BBB.org. Look for:

• Accreditation status (accredited businesses agree to BBB standards)

• Star rating based on customer reviews

• Complaint history — and more importantly, whether complaints were resolved

• How long the business has been operating

Also check the BBB Scam Tracker to see if any scam reports have been filed against the company name or phone number.

Important context: The presence of scam reports doesn't necessarily mean the business itself is a scam. Sometimes legitimate businesses have their names or phone numbers misused by third parties. What matters is the pattern and the company's response.

Step 4: Read Google Reviews — But Read Them Critically

Google reviews give you a real-world picture of customer experience. Look for:

• Volume: A company with 100+ reviews is more reliable than one with 5

• Recency: Recent reviews (last 6 months) matter more than old ones

• Detail: Reviews that describe specific experiences (installation timeline, communication quality, post-install support) are more trustworthy than vague praise

• Response patterns: Does the company respond to negative reviews professionally?

Tip: Search "[Company Name] reviews" and also "[Company Name] complaints" to see the full picture.

Step 5: Understand the Marketing vs. the Program

California has several real energy incentive programs, including:

• SGIP (Self-Generation Incentive Program): Real CPUC-administered program for battery storage rebates. Can cover 15% to 100% of costs depending on eligibility.

• Federal Investment Tax Credit (ITC): 30% federal tax credit for solar and battery installations through 2032.

• NEM 3.0 (Net Energy Metering): California's current solar billing framework.

Be cautious of marketing materials that:

• Claim utilities are "requiring" homeowners to convert to solar or self-generation (they are not)

• Promise "free solar" or "no cost" without explaining program specifics

• Use urgent language like "final notice" or "assessment scheduled this week"

• Reference laws or penal codes to create a sense of urgency

• Mimic utility company branding (logos, colors, formatting)

The CPUC's Solar Consumer Protection Guide lists common false claims to watch out for, including "free solar energy at no cost" and "you will never pay an electricity bill ever again."

Step 6: Ask the Right Questions

Before scheduling any assessment or signing a contract, ask the contractor directly:

1. "What is your CSLB contractor license number?" — Then verify it yourself.

2. "Are you a registered SGIP Developer?" — Then check selfgenca.com.

3. "Will you provide the CPUC Solar Consumer Protection Guide before I sign?" — This is required for interconnection applications in utility service areas.

4. "Which SGIP budget category are you applying under?" — The program has multiple budget tracks (equity/resiliency/general market) with different funding levels.

5. "Can I see references from recent installations in my area?" — Local references you can verify are the gold standard.

Step 7: Get Multiple Quotes

Never sign a contract based on a single visit or phone call. Get at least 2-3 quotes from different contractors. Compare:

• Total system cost (before and after incentives)

• Equipment brands and warranties

• Installation timeline

• Financing terms (if applicable)

• What's included vs. what costs extra

The Bottom Line

Legitimate solar contractors welcome scrutiny. They'll share their license numbers, show you their credentials, and walk you through the process transparently. If a company gets defensive when you ask these questions — or pressures you to decide quickly — that's your answer.

California has excellent tools for consumer protection. Use them. Your future self will thank you.

California Energy Initiative is a BBB-accredited, CSLB-licensed solar and battery storage contractor serving Sacramento and surrounding areas. Check our eligibility page to learn more about solar and SGIP incentives for your home.