Enphase Energy started shipping its IQ9N-3P Commercial Microinverter across the United States in late December 2025. The commercial microinverter is manufactured in the United States to support domestic content requirements and foreign entity of concern (FEOC) compliance for eligible commercial solar projects.
IQ9-3P-277 Commercial Microinverter. Enphase
This is Enphase’s first microinverter powered by gallium nitride (GaN) technology and designed for three-phase 480-Y/277-V grid configurations, without using external transformers.
The IQ9N-3P is designed for 480-V commercial projects. It uses GaN technology in the power conversion stage instead of silico to increase the system’s efficiency to 97.5%. It can manage a continuous DC current of 16 A and deliver up to 427 VA of peak output power, supporting solar panels up to 600 W.
“We have carefully vetted the Enphase IQ9N-3P Microinverter and are excited to install it on many commercial projects over the next several years,” said Jon Wedel, co-owner and VP of commercial at Namaste Solar, a seasoned Colorado-based employee-owned cooperative. “Because of the new 480-V solution, we can pursue many more straightforward applications and install these systems more efficiently. The U.S. manufacturing and domestic content qualification makes navigating the current market much easier while delivering a top-quality, dependable solution for our client base.”
The new microinverter is compliant with grid standards including UL 1741-SB and IEEE 1547-2018, and features rapid shutdown, phase balancing, voltage/frequency ride-through and loss-of-phase detection for grid safety and system reliability. Enphase commercial systems are designed to support UL 3141, a system-level standard for safe, coordinated control of power flow. This is possible through Enphase Power Control software and does not require external protection hardware.
Enphase IQ9N-3P Commercial Microinverters can be deployed on systems rated at less than 100 kW or hundreds of kilowatts. Enphase microinverters offer module-level monitoring and can maintain production under shading and uneven roof conditions, such as commercial rooftops with HVAC obstructions, skylights and multi-tenant layouts.
“GaN technology and three-phase support make the IQ9N-3P Commercial Microinverter a strong fit for modern commercial rooftops,” said Drew Collom, co-founder of Quality Solar. “With production in the United States and domestic content alignment, we can design more efficient systems, meet federal sourcing requirements and scale projects over time without costly redesigns.”
IQ9N-3P has a 25-year limited warranty, while IQ Gateway Commercial Pro, Enphase’s commercial monitoring hub, comes with a 15-year limited warranty.
News item from Enphase Energy
