Home › License guides › Solar and energy efficiency

Solar and energy efficiency: license rules by state

Solar and energy efficiency can only list on ExpertMarketplace in a state that requires a license once the license is on file. Each listing shows the number, the state, the expiry date, and whether we've checked it on the board's site. Checked November 8, 2026; confirm with the board before you rely on it.

StateWho licenses it
AlabamaAlabama Electrical Contractors Board ↗
Alabama Licensing Board for General Contractors ↗
Guide
AlaskaAlaska Department of Labor, Mechanical Inspection + CBPL ↗
Alaska Division of Corporations, Business and Professional Licensing (construction contractor registration) ↗
Guide
ArizonaArizona Registrar of Contractors ↗
Arizona Registrar of Contractors ↗
Guide
ArkansasArkansas Department of Labor and Licensing ↗
Arkansas Contractors Licensing Board ↗
Guide
CaliforniaCSLB (C-10) + DIR electrician certification ↗
Contractors State License Board (CSLB) ↗
Guide
ColoradoColorado State Electrical Board (DORA) ↗
No statewide license in Colorado for this work. Your city or county licenses it.
Guide
ConnecticutConnecticut Department of Consumer Protection ↗
Connecticut Department of Consumer Protection (home improvement registration) ↗
Guide
DelawareDelaware Board of Electrical Examiners ↗
Delaware Division of Revenue (contractor business licence) ↗
Guide
District of ColumbiaDC Department of Licensing and Consumer Protection ↗
DC Department of Licensing and Consumer Protection ↗
Guide
FloridaFlorida Electrical Contractors Licensing Board (DBPR) ↗
Florida Construction Industry Licensing Board (DBPR) ↗
Guide
GeorgiaGeorgia State Construction Industry Licensing Board ↗
Georgia State Licensing Board for Residential and General Contractors ↗
Guide
HawaiiHawaii Board of Electricians and Plumbers ↗
Hawaii Contractors License Board ↗
Guide
IdahoIdaho Division of Occupational and Professional Licenses ↗
Idaho Division of Occupational and Professional Licenses (contractor registration) ↗
Guide
IllinoisNo statewide license in Illinois for this work. Your city or county licenses it.
No statewide license in Illinois for this work. Your city or county licenses it.
Guide
IndianaNo statewide license in Indiana for this work. Your city or county licenses it.
No statewide license in Indiana for this work. Your city or county licenses it.
Guide
IowaIowa Electrical Examining Board ↗
Iowa Division of Labor (contractor registration) ↗
Guide
KansasNo statewide license in Kansas for this work. Your city or county licenses it.
No statewide license in Kansas for this work. Your city or county licenses it.
Guide
KentuckyKentucky Department of Housing, Buildings and Construction ↗
No statewide license in Kentucky for this work. Your city or county licenses it.
Guide
LouisianaLouisiana State Licensing Board for Contractors ↗
Louisiana State Licensing Board for Contractors ↗
Guide
MaineMaine Electricians' Examining Board ↗
No statewide license in Maine for this work. Your city or county licenses it.
Guide
MarylandMaryland State Board of Master Electricians ↗
Maryland Home Improvement Commission ↗
Guide
MassachusettsMassachusetts Board of State Examiners of Electricians ↗
Massachusetts Office of Public Safety and Inspections (CSL) + home improvement contractor registration ↗
Guide
MichiganMichigan LARA Bureau of Construction Codes ↗
Michigan LARA Residential Builders and Maintenance & Alteration Contractors ↗
Guide
MinnesotaMinnesota Department of Labor and Industry, Board of Electricity ↗
Minnesota Department of Labor and Industry (residential building contractor) ↗
Guide
MississippiMississippi State Board of Contractors ↗
Mississippi State Board of Contractors ↗
Guide
MissouriNo statewide license in Missouri for this work. Your city or county licenses it.
No statewide license in Missouri for this work. Your city or county licenses it.
Guide
MontanaMontana State Electrical Board ↗
Montana Department of Labor and Industry (construction contractor registration) ↗
Guide
NebraskaNebraska State Electrical Division ↗
Nebraska Department of Labor (contractor registration) ↗
Guide
NevadaNevada State Contractors Board ↗
Nevada State Contractors Board ↗
Guide
New HampshireNew Hampshire Electricians' Board (OPLC) ↗
No statewide license in New Hampshire for this work. Your city or county licenses it.
Guide
New JerseyNew Jersey Board of Examiners of Electrical Contractors ↗
New Jersey Division of Consumer Affairs (home improvement contractor registration) ↗
Guide
New MexicoNew Mexico Construction Industries Division ↗
New Mexico Construction Industries Division ↗
Guide
New YorkNo statewide license in New York for this work. Your city or county licenses it.
No statewide license in New York for this work. Your city or county licenses it.
Guide
North CarolinaNorth Carolina State Board of Examiners of Electrical Contractors ↗
North Carolina Licensing Board for General Contractors ↗
Guide
North DakotaNorth Dakota State Electrical Board ↗
North Dakota Secretary of State (contractor licence) ↗
Guide
OhioOhio Construction Industry Licensing Board ↗
No statewide license in Ohio for this work. Your city or county licenses it.
Guide
OklahomaOklahoma Construction Industries Board ↗
No statewide license in Oklahoma for this work. Your city or county licenses it.
Guide
OregonOregon Building Codes Division + CCB ↗
Oregon Construction Contractors Board ↗
Guide
PennsylvaniaNo statewide license in Pennsylvania for this work. Your city or county licenses it.
Pennsylvania Attorney General (home improvement contractor registration) ↗
Guide
Rhode IslandRhode Island Department of Labor and Training ↗
Rhode Island Contractors' Registration and Licensing Board ↗
Guide
South CarolinaSouth Carolina LLR ↗
South Carolina Contractors Licensing Board (LLR) + Residential Builders Commission ↗
Guide
South DakotaSouth Dakota Electrical Commission ↗
No statewide license in South Dakota for this work. Your city or county licenses it.
Guide
TennesseeTennessee Board for Licensing Contractors ↗
Tennessee Board for Licensing Contractors ↗
Guide
TexasTexas Department of Licensing and Regulation ↗
No statewide license in Texas for this work. Your city or county licenses it.
Guide
UtahUtah Division of Professional Licensing ↗
Utah Division of Professional Licensing ↗
Guide
VermontVermont Division of Fire Safety (electrical licensing) ↗
Vermont Office of Professional Regulation (residential contractor registration) ↗
Guide
VirginiaVirginia Board for Contractors (DPOR) ↗
Virginia Board for Contractors (DPOR) ↗
Guide
WashingtonWashington Department of Labor and Industries ↗
Washington Department of Labor and Industries (contractor registration) ↗
Guide
West VirginiaWest Virginia State Fire Marshal ↗
West Virginia Contractor Licensing Board ↗
Guide
WisconsinWisconsin Department of Safety and Professional Services ↗
Wisconsin Department of Safety and Professional Services (dwelling contractor) ↗
Guide
WyomingWyoming Department of Fire Prevention and Electrical Safety ↗
No statewide license in Wyoming for this work. Your city or county licenses it.
Guide