UnbiasedSolar

Fronius

0.3% of recent U.S. home systems use Fronius inverters.

Fronius

Status: Private family company; scaled back US residential presence in 2024-2025 (reported).

Company
Austria
U.S. manufacturing
Main products
  • Primo GEN24 Plus 3.8-10.0 US
Warranty
years: 10 standard (extendable)
Price tier
mid
Risks to weigh
  • Reduced US focus

Field-serviceable design.

Specifications as stated by the manufacturer; confirm on the current datasheet and warranty document.

Fronius inverters on the CEC certified list

39 certified models, 3.8–20 kW. Smallest to largest. See all models.

ModelOutputCEC efficiencyType
Primo GEN24 3.8 208-240 Plus SC3.8 kW96.5%Hybrid
Primo GEN24 3.8 208-240 SC3.8 kW96.5%Hybrid
Fronius Primo 3.8-1 208-2403.8 kW96%String
Primo GEN24 3.8 208-2403.802 kW96.5%Hybrid
Primo GEN24 3.8 208-240 Plus3.802 kW96.5%Hybrid
Fronius Primo 5.0-1 208-2405 kW96.5%String
Primo GEN24 5.0 208-240 Plus SC5 kW97%Hybrid
Primo GEN24 5.0 208-240 SC5 kW97%Hybrid
Primo GEN24 5.0 208-2405.006 kW97%Hybrid
Primo GEN24 5.0 208-240 Plus5.006 kW97%Hybrid
Primo GEN24 6.0 208-240 Plus SC5.732 kW96.5%Hybrid
Primo GEN24 6.0 208-240 SC5.732 kW96.5%Hybrid
Choosing equipmentA well-installed mid-tier system beats a premium brand installed badly. Ask quotes to name exact models, compare warranties in writing, and check that the company backing a 25-year warranty is financially healthy. Compare your quotes.