Washington Solar License Requirements (2026)

Washington does not issue a stand-alone solar contractor license. A business installing photovoltaic electrical equipment must hold an L&I electrical contractor license in a classification that actually covers the work, have an assigned electrical administrator or master electrician, and use properly certified electricians. The general electrical classification is 01; the former “06A” and “06B” labels are HVAC/refrigeration specialties, not solar classifications. A solar company that also contracts for roof, structural, or other non-electrical construction can need separate Washington contractor registration under RCW 18.27. L&I or an authorized city handles the electrical permit and inspection, while the local building authority separately decides structural/building permits and review.

Regulatory Body

Washington State Department of Labor & Industries Electrical Program and local inspection authorities (L&I Electrical / Local AHJ) administers the credential or scope-specific rules discussed here under RCW Chapter 19.28; WAC Chapter 296-46B; RCW Chapter 18.27. Whether that pathway applies depends on the work scope and conditions explained below. L&I licenses electrical contractors and certifies electrical personnel statewide. L&I or an authorized city issues electrical permits and conducts inspections; separate construction-contractor registration can apply to non-electrical solar scope.

• Official portal: https://www.lni.wa.gov/licensing-permits/electrical/electrical-licensing-exams-education/electrical-contractor
• Address: Electrical Program, P.O. Box 44460, Olympia, WA 98504-4460
• Phone: (360) 902-5269

Eligibility Requirements

Applicants must be at least 18 years old. Applicants must provide a Social Security Number. The electrical-contractor requirements are based on the firm, UBI, assigned administrator/master, bond, and required account information; this guide does not identify a Washington-residency condition.

Good moral character

L&I can deny or act on an electrical license for statutory and rule-based grounds, including outstanding judgments and compliance failures. Use the current application and RCW/WAC materials rather than assuming a solar-specific character rule.

Background investigation

The electrical contractor application requires identifying information for firm members. This guide does not assert an unsupported universal criminal-background-check requirement for every solar role.

Experience and Education

Rather than a set number of years, the cited materials define eligibility through An electrical contractor must designate a valid master journey-level electrician, master specialty electrician in the applicable specialty, or electrical administrator. An administrator certificate is obtained by passing the appropriate examination; L&I’s current rule says there are no qualification requirements merely to sit for that administrator examination. This is different from the separate experience path for journey-level or master electrician certification..

Accepted proof of experience or eligibility

• Electrical contractor license application, UBI, and $4,000 bond or permitted savings-account assignment
• Assigned administrator/master form and current certificate information
• Electrical permit and inspection records for each electrical installation
• Contractor-registration materials if the business also contracts for non-electrical construction scope

Education substitution

Do not represent a generic 8,000-hour master-electrician path as a prerequisite for every solar contractor. The firm may use an appropriately scoped administrator or master certificate; electrician certification and trainee supervision rules remain separate.

Exam Requirements

Testing provider or authority: L&I uses a state-authorized testing contractor for normal electrical administrator and electrician examinations. The following examination requirements cover the pathways described in this guide; follow each part's classification, waiver, and local-scope conditions. Unpublished format details do not remove an examination requirement:

• Appropriate electrical administrator examination, if the firm is qualifying through an administrator rather than an already-valid master certificate — question count: confirm with the authority, timing: confirm with the authority, passing score: confirm in the current candidate bulletin

Examination fee: As of July 1, 2026, the rule lists a $44.20 administrator examination application only for department-administered testing; normal testing fees are set by L&I contract. A department-administered first administrator/master examination is $106.70. The electrical contractor license is $353.90 for a 24-month initial/mail/in-person application or renewal, and $306.20 for a fully online renewal.

Retake policy: Follow the current L&I testing contractor and examination instructions. Do not use the former unsupported 30-day solar retake claim.

Insurance and Bonds

Before the license is issued, the applicant must file a $4,000 contractor license surety bond in the form prescribed by the L&I Electrical / Local AHJ.

General liability

L&I says electrical contractors are encouraged to carry general liability insurance but that it does not keep liability-insurance records for electrical contractors. The electrical-contractor statute instead requires insurance or other financial responsibility of $20,000 property damage, $50,000 injury/death to one person, and $100,000 injury/death to more than one person; an L&I-approved assigned account is an alternative.

Workers' compensation

An electrical-contractor applicant provides an industrial-insurance account number and needs a workers’ compensation account when the business hires employees. Review the business’s actual workforce and any out-of-state coverage with L&I.

Additional financial requirements

No financial statement is identified for the electrical contractor license. The application requires an original $4,000 electrical/telecommunications contractor surety bond or an allowed savings-account assignment. Non-electrical construction registration has separate bond and insurance requirements.

Fee Schedule

To turn these board fees into a realistic year-one budget — bond premium, liability insurance, and exam prep included — open the cost calculator preloaded for Washington solar.

Renewal and Continuing Education

The Washington Solar Contractor Requirements (Electrical Contractor License, Construction Registration, and Local Permits) runs on a 2 years renewal cycle. The current renewal fee is $306. Keep the bond, assigned administrator/master, and any required account information active. L&I can suspend the electrical contractor license if minimum requirements are not maintained. The displayed renewal fee is the current fully online amount; mail/in-person renewal is $353.90.

Continuing education: The electrical contractor license itself has a two-year term. The assigned administrator or master certificate has a separate three-year renewal cycle and requires 24 L&I-approved hours, including at least eight code-update hours and four RCW/WAC-review hours.

Reciprocity

For this classification, Washington does not recognize the NASCLA Accredited Examination.

Do not claim a solar-contractor reciprocity agreement. Verify any electrician certificate reciprocity or credential recognition directly with L&I before relying on it; the firm still must meet Washington electrical-contractor and permit rules.

Weighing more than one jurisdiction? The national hub compares published Solar license requirements by state — exam, bond, fee, and experience thresholds side by side.

Solar Licensing in Neighboring States

Contractors working near a state line, or weighing where to qualify first, should compare Washington's requirements against the bordering jurisdictions before committing to an application:

• Idaho Solar License Requirements — Idaho Limited Electrical Contractor — Solar Photovoltaic
• Oregon Solar License Requirements — Oregon Solar Contractor Licensing — CCB plus BCD Electrical Credential

Step-by-Step Application Roadmap

1. Map electrical and non-electrical scopes. Separate PV electrical installation from roof, structural, general-construction, plumbing/thermal, utility, and local-building work. Determine whether contractor registration is also needed for the non-electrical contract.
2. Choose a valid electrical-contractor classification. Use a classification that covers the work—01 General Electrical covers all phases. Do not use HVAC/refrigeration 06A or 06B as a solar classification.
3. Assign an administrator or master electrician. The firm must designate a valid appropriately scoped electrical administrator, master journey-level electrician, or master specialty electrician. The designee must be a firm member or full-time supervisory employee under the current WAC.
4. File the electrical contractor requirements. Obtain a UBI, submit the electrical contractor application, file the $4,000 bond or permitted savings assignment, and provide required industrial-insurance account information.
5. Staff the electrical work correctly. All electrical work must be performed by properly certified electricians or trainees under the applicable supervision rules. An administrator assignment does not authorize uncredentialed field work.
6. Register as a construction contractor when non-electrical scope requires it. L&I expressly notes that an electrical business doing other, non-electrical work may also need contractor registration. That registration has separate $15,000 specialty/$30,000 general bond and liability-insurance rules.
7. Obtain electrical and building approvals. The installing electrical contractor purchases the electrical permit. L&I or an authorized city handles inspection; the local building authority decides structural/building permit, plan-review, and roof requirements.
8. Complete inspection and utility interconnection. Request electrical inspection within three business days after completion or one business day after energization, whichever occurs first, and follow the serving utility’s current interconnection process.

Application Checklist

Before submitting to L&I Electrical / Local AHJ, the applicant should have each of the following ready:

• Electrical, structural/roof, construction, utility, and local scopes identified
• Applicable L&I electrical contractor classification selected
• Valid administrator or master electrician assigned to the firm
• UBI, $4,000 electrical bond/approved savings assignment, and required account information filed
• Properly certified electricians and supervised trainees assigned
• Separate construction-contractor registration completed if non-electrical scope requires it
• L&I/city electrical permit and local building approval obtained
• Electrical inspection and utility interconnection completed

Progress is saved in this browser, so you can return to this checklist while your application is in flight.

Common Filing Mistakes

The errors below are the ones that most frequently cost Washington Solar applicants time, drawn from the cited board guidance.

Using an HVAC specialty as a solar license

06A and 06B are HVAC/refrigeration specialties. Select a classification that covers PV electrical work and verify exact scope before bidding.

Equating the administrator with field-electrical certification

The assigned administrator/master is a business requirement. Electrical work must still be performed by properly certified electricians or appropriately supervised trainees.

Forgetting the non-electrical contractor-registration layer

An electrical contractor performing roof, structural, or other non-electrical construction may also need construction contractor registration.

Treating electrical and building permits as one approval

L&I or an authorized city handles electrical permits and inspections; the local building authority controls structural/building approval.

Using the old annual fee and insurance figures

Electrical contractor licenses are now two-year licenses. Use current L&I fee and financial-responsibility rules rather than obsolete annual solar estimates.

Study and Reference Materials

The list below collects the board's cited references and the materials applicants typically study from. CLR is not paid to recommend any of them.

• Washington electrical contractor licensing — Washington L&I Electrical Program. Current business-license requirements, assigned administrator/master, two-year renewal, and processing information.
• WAC Chapter 296-46B — Washington L&I / Code Reviser. Current electrical licensing, PV, permit, inspection, designee, and certification rules.
• RCW Chapter 19.28 — Washington Legislature. Statutory electrical contractor, bond, financial-responsibility, permit, and administrator framework.

Other Washington Trade Licenses

Looking at a different trade? CLR also publishes these Washington licensing guides:

• Washington General Contractor License Requirements
• Washington Electrician License Requirements
• Washington Plumber License Requirements
• Washington HVAC Technician License Requirements
• Washington Roofing Contractor License Requirements
• Washington Painting Contractor License Requirements
• Washington Landscaping Contractor License Requirements
• Washington Masonry Contractor License Requirements
• Washington Concrete Contractor License Requirements
• Washington Carpentry Contractor License Requirements
• Washington Low-Voltage Technician License Requirements
• Washington Fire Sprinkler Contractor License Requirements
• Washington Home Inspector License Requirements
• Washington Pool Contractor License Requirements
• Washington Handyman License Requirements
• Washington Pest Control License Requirements
• Washington Septic Contractor License Requirements

Frequently Asked Questions

Does Washington have a solar contractor license?

No stand-alone solar credential was identified. PV electrical work requires the appropriate L&I electrical contractor license and properly certified electrical personnel; non-electrical construction scope may also require contractor registration.

Can a 06A or 06B contractor install solar?

Those are HVAC/refrigeration specialties, not solar classifications. The firm must hold the electrical-contractor classification that covers the actual PV electrical work; 01 General Electrical covers all phases.

Does every solar company need a Master Electrician?

The firm must assign a valid master journey-level electrician, appropriately scoped master specialty electrician, or electrical administrator. The statute permits any of those routes, so a master is not the only option.

Does L&I require $250,000/$200,000 liability insurance for an electrical contractor?

No. L&I says it does not keep general-liability records for electrical contractors. RCW 19.28.501 requires the stated insurance/financial-responsibility amounts, and an approved assigned account can be used instead.

Are solar electrical permits local or state permits?

Electrical permits and inspections are issued by L&I or an authorized city. Building and structural permits are local-AHJ matters. The electrical contractor buys the electrical permit for work it performs.

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