How to verify a solar installer’s license in any state

Why you cannot find the license

The usual advice is "check the contractor’s license". It is correct and it is not enough, because it assumes a thing exists that mostly does not: a solar license.

We checked 2,062 solar companies against state licensing authorities across 27 states, then went back through each state’s own board pages and administrative code to establish what the credential is actually called. Four states name solar in the license itself.

California has a C-46 Solar Contractor classification, scoped to "thermal and photovoltaic solar energy systems". Florida has a statutory Solar Contractor category. Louisiana has S.12 Solar Energy Equipment. Virginia has an Alternative Energy System Contracting specialty. That is the complete list from our set.

Everywhere else we verified, residential photovoltaic work is authorized by an electrical license that says nothing about solar. Arizona is the sharpest case, and it contains a trap.

We read the registrar’s entire classification list: there is no photovoltaic class at all, and every Arizona classification whose title contains the word "Solar" is swimming pool, boiler, plumbing or air conditioning work.

A homeowner searching for a solar class in Arizona will find several, and none of them is the right one.

Washington is the same shape without the trap: we enumerated all sixteen electrical specialties and none is solar.

Then there is the case that catches people out completely. In some states residential solar requires no state-level license.

Ohio’s licensing statute defines a construction project so as to exclude "a residential building as defined in section 3781.06", and that section defines one as "a one-family, two-family, or three-family dwelling house".

State electrical licensing does not reach a house. Illinois goes further: its regulator’s own list of licensed professions contains no general contractor, no electrical contractor, no home improvement contractor and no solar license. Roofing is the only construction trade the state licenses at all.

So a search that returns nothing has at least four possible meanings: wrong entity name, wrong register, right register but the license is under a class you did not think to look for, or a state that does not license this at the state level.

Exactly one of those meanings is "this company is unlicensed", and it is not the one to assume first.

You do not have to take our word for that. Oregon’s Construction Contractors Board says it on its own search page: a failure to find a contractor by name "does not assume they are unlicensed". A state board that runs the register is telling you not to over-read an empty result from it.

What we found doing this two thousand times

Our database holds 2,062 solar company records, of which 1,806 were verified against a state authority. The useful figures are about how the registers behave, not about any company.

Of the 1,721 records where a register actually returned an answer, 1,401 showed a current primary license, 57 were confirmed only through a secondary source such as a program roster, 193 showed an expired license and 27 a revoked one. That is 12.8% not current, roughly one in eight.

That number is a statistic about the companies we chose to research, on the dates we checked them. It is not a market rate and must not be read as one.

A license can lapse for a renewal fee as easily as for a disciplinary reason, and a company with a lapsed license in August may be current in September. What it establishes is narrower and still worth knowing: checking is not a formality that always comes back clean.

The second figure matters more for how you read your own search. 272 records came back unable to verify, meaning the register could not be queried rather than that a license was missing.

Georgia alone accounts for 62 of them, and we went back to find out why. Georgia does license both residential and general contractors and electrical contractors, under published rules.

The problem was ours: the state runs more than one verification tool, and the one we could reach turns out to cover only cemeteries, charities and securities. It contains no contractors at all, which produces exactly the near-total miss we recorded.

The construction boards live in a separate system that refuses automated access.

Reporting those 62 as unlicensed would have defamed real businesses over a wrong URL, and it is the same mistake available to any homeowner who searches the wrong register and draws a conclusion.

Bond and insurance, which the same search can show you

Many registers publish bond and insurance status alongside the license, and it is the same thirty seconds of work. It is worth understanding what those numbers are, because they are frequently smaller than the job.

A contractor’s bond is not insurance for you. It is a fixed sum a surety will pay out on valid claims, shared among everyone who claims against it, and it can be a fraction of what a bad installation costs. California requires a $25,000 contractor’s bond.

Washington’s electrical contractor bond is $4,000. Oregon scales its by license type, from $15,000 for a residential limited contractor to $80,000 for a commercial general contractor at the higher level, with liability insurance requirements alongside from $100,000 per occurrence up to $2 million aggregate.

Nevada does not publish a formula at all: its board sets each bond between $1,000 and $500,000 case by case, weighing the license type, the monetary limit and the applicant’s financial responsibility and character.

A few states run something better than a bond. Maryland requires home improvement contractors to carry a minimum of $500,000 in general liability insurance, and operates a Guaranty Fund that compensates homeowners for losses from poor workmanship or contract failure, funded by a small assessment on each license.

That fund caps at $30,000 per claim, which tells you something useful about the scale of loss these schemes are built for.

The practical reading: check that a bond exists, note its size against the price of your job, and do not mistake it for cover. If your state runs a recovery or guaranty fund, find out its per-claim cap before you need it.

An active license is a statement about a person, not only a company

Corporations cannot sit an exam. So states attach a company’s license to a named individual, variously called a qualifying individual, qualifying party, qualifying agent, responsible managing officer or responsible managing employee, who is legally required to supervise the construction work.

This makes a license more fragile than the word "active" suggests. In California, if that person leaves, the company must notify the board within 90 days and replace them within 90 days, and failure to notify results in automatic suspension of the license or removal of the classification.

Florida allows 60 days and bars the business from taking on new work during the gap.

You cannot check for this in advance, and we are not suggesting you try.

The reason to know it is interpretive: a license that is active today is active because of arrangements that can change without anything visible happening to the company.

It is a reason to check close to signing rather than months beforehand, and a reason not to treat a check done once as permanent.

What happens if the license is not current

First, ask. An expired license is frequently a renewal that got away from a small business, and the company will either produce the current one or not. Both answers are informative and you get one for free.

Second, understand that in some states this is not merely a compliance question, it is a question about whether the contract can be enforced against you. California is the clearest example.

Its Business and Professions Code provides that a contractor cannot bring an action for the collection of compensation without alleging they were duly licensed at all times during performance.

And it goes further in the homeowner’s direction: a person who uses the services of an unlicensed contractor "may bring an action in any court of competent jurisdiction in this state to recover all compensation paid to the unlicensed contractor".

That is an unusually strong remedy and it is specific to states that have enacted something like it.

We are not telling you it exists where you live, and we are certainly not suggesting anyone hire an unlicensed contractor in the hope of using it. The point is narrower: licensing is not paperwork.

In some states it determines whether the other party can enforce the agreement at all.

Third, if something has already gone wrong, the licensing board is a real avenue in a way that a review site is not.

Boards take complaints, publish disciplinary history, and in some states administer recovery funds for consumers harmed by licensees.

Find out which body covers your installer at the time you sign, not at the time you are in dispute.