Enphase Energy ships GaN-based IQ9S commercial microinverter in US

Enphase Energy, Inc. (NASDAQ: ENPH) has begun production shipments of its IQ9S-3P Commercial Microinverter in the United States, the company announced June 18, 2026.

The microinverter is built with gallium nitride (GaN) technology and delivers up to 548 VA of continuous output power. It supports solar panels up to 770 W and connects directly to three-phase 480Y/277 V grid configurations without requiring external transformers. The device supports 18 A of continuous DC current and carries a CEC weighted efficiency rating of 97.5%.

The product is designed for commercial projects using 600 W to 770 W panels and meets grid compliance standards including UL 1741-SB and IEEE 1547-2018. Features include rapid shutdown, phase balancing, voltage and frequency ride-through, and loss-of-phase detection.

Enphase said safe harbor orders for the IQ9S-3P should be placed before July 4, 2026, ahead of federal tax credit deadlines. Units manufactured in U.S. facilities with domestic content may qualify as FEOC compliant under IRS Notice 2025-08 and may help eligible projects qualify for domestic content bonus tax credits, subject to project-specific requirements. The products also comply with Buy America Act standards for federal direct procurement contracts.

"The IQ9S-3P Commercial Microinverter extends Enphase's panel-level architecture to higher-power 480 V commercial projects," said Aaron Gordon, senior vice president and general manager of the systems business unit at Enphase Energy. "By manufacturing this product in the United States and shipping it ahead of key safe harbor deadlines, we expect it may help customers build more efficiently, address federal sourcing requirements, and move forward with greater confidence, depending on project conditions."

The IQ9S-3P carries a 25-year limited warranty and connects to the IQ Gateway Commercial Pro, which comes with a 15-year limited warranty. Enphase is based in Fremont, California.

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