Here are some of the best-known and largest U.S.-based or U.S.-manufacturing solar panel companies as of 2026. The market has expanded quickly due to IRA incentives, tariffs, and domestic manufacturing investment.

Major U.S.-Based Solar Panel Manufacturers

CompanyHeadquartersMain FocusNotes

First SolarArizonaUtility-scale thin-film panelsLargest U.S. solar manufacturer; uses CdTe thin-film tech instead of silicon.

Mission SolarTexasResidential & commercialKnown for “Made in USA” assembly and strong installer network.

Auxin SolarCaliforniaU.S.-assembled crystalline panelsOne of the few fully U.S.-owned solar module makers.

Crossroads SolarIndianaEthical/small-scale manufacturingFocuses on domestic production and social-impact hiring.

GAF EnergyCaliforniaSolar shingles & roofingIntegrates solar directly into roofing products.

SunivaGeorgiaSolar cells & modulesRestarted domestic manufacturing with new partnerships.

International Companies Manufacturing in the U.S.

These are not originally American companies, but they operate major manufacturing plants in the U.S.

CompanyU.S. Manufacturing Location(s)Origin

QcellsGeorgiaSouth Korea

Canadian SolarTexas plantsCanada

JinkoSolarFloridaChina

HelieneMinnesotaCanada

Silfab SolarWashington & South CarolinaCanada

Illuminate USAOhioLONGi-backed venture

T1 EnergyTexasTrina-linked manufacturing

 

Best Known by Category

• Best utility-scale manufacturer: First Solar

• Best residential mainstream option: Qcells

• Most “American-made” focused: Mission Solar and Auxin Solar

• Best solar roof products: GAF Energy

• Fastest-growing U.S. manufacturing footprint: First Solar and Qcells

• Here are some of the best-known and largest U.S.-based or U.S.-manufacturing solar panel companies as of 2026. The market has expanded quickly due to IRA incentives, tariffs, and domestic manufacturing investment.

• Major U.S.-Based Solar Panel Manufacturers

• CompanyHeadquartersMain FocusNotes

• First SolarArizonaUtility-scale thin-film panelsLargest U.S. solar manufacturer; uses CdTe thin-film tech instead of silicon.

• Mission SolarTexasResidential & commercialKnown for “Made in USA” assembly and strong installer network.

• Auxin SolarCaliforniaU.S.-assembled crystalline panelsOne of the few fully U.S.-owned solar module makers.

• Crossroads SolarIndianaEthical/small-scale manufacturingFocuses on domestic production and social-impact hiring.

• GAF EnergyCaliforniaSolar shingles & roofingIntegrates solar directly into roofing products.

• SunivaGeorgiaSolar cells & modulesRestarted domestic manufacturing with new partnerships.

• International Companies Manufacturing in the U.S.

• These are not originally American companies, but they operate major manufacturing plants in the U.S.

• CompanyU.S. Manufacturing Location(s)Origin

• QcellsGeorgiaSouth Korea

• Canadian SolarTexas plantsCanada

• JinkoSolarFloridaChina

• HelieneMinnesotaCanada

• Silfab SolarWashington & South CarolinaCanada

• Illuminate USAOhioLONGi-backed venture

• T1 EnergyTexasTrina-linked manufacturing

•  

• Best Known by Category

• Best utility-scale manufacturer: First Solar

• Best residential mainstream option: Qcells

• Most “American-made” focused: Mission Solar and Auxin Solar

• Best solar roof products: GAF Energy

• Fastest-growing U.S. manufacturing footprint: First Solar and Qcells