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How Do You Verify a Solar Installer Is a Legitimate Illinois Shines Approved Vendor?

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Published August 6, 2026 · Facts verified August 2026 · By The Day Company Editorial Team

What does "Illinois Shines Approved Vendor" actually mean?

An Approved Vendor is a company registered with and monitored by Illinois Shines, the state's solar incentive program — but the company that advertises, knocks on your door, or signs you up is often a Designee of that Approved Vendor, not the Approved Vendor itself. Illinois Shines defines Designees as "installers, maintenance and repair, warranty holders, marketing firms, lead generators, and sales organizations" working under an Approved Vendor's registration.

That distinction is the single most useful thing on this page. A salesperson can genuinely be working for a legitimate program participant while the entity you should actually verify is the Approved Vendor they're a Designee of — not the name on the truck or the door hanger. Ask directly: "Who is your Approved Vendor, and what's your relationship to them?" A straightforward answer is a good sign by itself.

How do I check if a company is a current Approved Vendor?

Illinois Shines publishes the full list at illinoisshines.com — separate downloadable rosters for Approved Vendors, Designees, and (for income-qualified projects) Equity Eligible Contractor versions of both. Find your company's name, confirm its status, and check whether it's flagged.

• Look for the name — either as the Approved Vendor directly, or as a listed Designee under one.
• Check the highlight color. Illinois Shines color-codes the list: orange = currently suspended or discontinued; blue = withdrawn or inactive; purple = both. No highlight is what you want to see.
• Note the Approved Vendor ID. Legitimate companies can usually provide this without hesitation.

Illinois Shines also runs a separate project-status lookup by Disclosure Form ID or Application ID once you're further into the process, at illinoisshines.com's project-status tool.

How do I check if a company has been suspended or has complaints filed?

Illinois Shines publishes two records worth checking before you sign anything: a Program Violations Report and a Consumer Complaint Report, both updated on a rolling and quarterly basis.

To check: search the Program Violations Report for warning or suspension letters (warning letters are removed after 12 months), and the Consumer Complaint Report for open, unresolved complaints against the specific company. To file a complaint yourself, Illinois Shines runs a Consumer Complaint Center by web form, phone, and email.

How do I verify the installer's ICC certification?

Since 2014, anyone installing distributed generation systems in Illinois — with narrow self-install exceptions — must be certified by the Illinois Commerce Commission under 83 Ill. Adm. Code Part 468. There's no public searchable roster of certified installers, so the actual verification step is simpler than it sounds: ask the installer for the ICC docket number under which they were certified.

This isn't an optional courtesy — Illinois rule 83 Ill. Adm. Code 468.130 requires net-metering customers to provide their utility with "the Commission docket number in which the entity obtained a certificate from the Commission." A company that can't produce one is a real question mark; a legitimate installer will have it on hand.

Does NABCEP certification matter in Illinois?

NABCEP (the North American Board of Certified Energy Practitioners) runs a public, searchable directory of individually certified solar professionals, accredited to the ISO/IEC 17024 standard. It's a genuine quality signal — but it certifies people, not companies, it's national rather than Illinois-specific, and it's entirely voluntary. Treat it as a nice-to-have alongside Approved Vendor and ICC verification, not a substitute for either.

The 5-minute Illinois installer verification checklist

Work through it live — check each one off as you confirm it against the state's own records. Nothing you check here is saved or sent anywhere unless you choose to continue.

What if I find a red flag in the quote or the financing?

This page checks the company. Two different things live one click away if what you're worried about is the paperwork itself.

• Something off in the quote document — pricing, equipment specifics, production guarantees, contract terms — is covered in our full guide to vetting an Illinois solar quote.
• A financed price that's higher than the cash price is usually a dealer fee — a lender markup the CFPB found typically runs 10–30% of the cash price. That mechanic is covered in our guide to solar loan dealer fees in Illinois.

Where do I report a problem?

Three real channels, depending on what you're dealing with.

• Illinois Shines Consumer Complaint Center — for issues with an Approved Vendor, Designee, or the incentive program itself.
• Illinois Attorney General, Consumer Protection Division — for deceptive or fraudulent sales practices.
• Illinois Commerce Commission — accepts informal complaints about installers and installations directly.

Verifying an Illinois Solar Installer — FAQ

Is every solar company in Illinois required to be an Approved Vendor?

Only if the project is accessing Illinois Shines incentives. Separately, the installer performing the physical work must be ICC-certified under 83 Ill. Adm. Code Part 468 regardless of program participation.

What's the difference between an Approved Vendor and a Designee?

The Approved Vendor is registered with and monitored by Illinois Shines. A Designee — installer, marketing firm, lead generator, or sales organization — works under an Approved Vendor's registration. The company at your door is often the Designee, not the Approved Vendor itself.

Where is the official Illinois Shines Approved Vendor list?

Illinois Shines publishes it as a downloadable list at illinoisshines.com, with separate versions for Approved Vendors and Designees, color-coded for suspended, inactive, or both.

How do I know if a solar company has been suspended?

Check the Program Violations Report and Consumer Complaint Report at illinoisshines.com — suspended or discontinued entities are highlighted in orange on the Approved Vendor list itself.

How many solar complaints does Illinois get?

832 in 2025, down from a revised 1,123 in 2024. 113 entities were suspended in 2025. Most 2025 suspensions trace to administrative paperwork rather than consumer-harm findings — worth knowing before treating any single flag as a dealbreaker.

How do I verify a company's ICC installer certification?

Ask for the ICC docket number under which they were certified. There's no public searchable roster, so this direct question is the actual verification step, and Illinois rule requires the docket number be provided to your utility as part of net metering anyway.

Does the installer have to give me anything before I sign a contract?

Yes — a signed Illinois Shines Disclosure Form is required before the installation contract, covering system size, itemized pricing, financing terms, and the incentive amount.

Is NABCEP certification required in Illinois?

No. It's a voluntary national credential for individuals, not a state requirement — a good secondary signal, not a substitute for Approved Vendor or ICC verification.

Should I trust a Better Business Bureau rating to check legitimacy?

BBB accreditation is a paid rating system, not a government record. For actual legitimacy — program status, suspensions, certification — Illinois's own records are the primary source; a BBB grade isn't a substitute for checking them.

Who do I contact if I think I was scammed?

The Illinois Shines Consumer Complaint Center for program-related issues, the Illinois Attorney General's Consumer Protection Division for deceptive practices, or the Illinois Commerce Commission for installer/installation complaints.

Is a company legitimate just because it's an Approved Vendor?

Approved Vendor status is a real, verifiable signal — not a guarantee. Still check the violations and complaint reports, and still read your own contract and Disclosure Form carefully.

Can you help me verify a company before I sign anything?

Yes — send us the company and Approved Vendor name from your offer and we'll help you confirm it against the state's own records, free, before you sign.

Related answers

Sources

• Illinois Shines — Find an Approved Vendor, Designee, or Subcontractor
• Illinois Shines — Program Violations & Consumer Complaint Reports
• Illinois Shines — Consumer Complaint Center
• Illinois Shines — Disclosure Forms
• Illinois Commerce Commission — Distributed Generation Installer Certification
• Illinois Attorney General — Consumer Protection Division
• NABCEP — Board Certified Professionals Directory