Enphase Energy, Inc. opened U.S. pre-orders for the new IQ9S-3P Commercial Microinverter, its most powerful microinverter to date. Built with advanced gallium nitride (GaN) technology, the IQ9S-3P Commercial Microinverter supports high-wattage solar panels up to 770 W and connects directly to three-phase 480Y/277 V (wye) grid configurations without requiring external transformers. Together with the recently launched IQ9N-3P Commercial Microinverter, IQ9S-3P Commercial Microinverters give Enphase a broader commercial portfolio for the U.S. 480 V three-phase market.

Pre-orders also allow customers to safe harbor equipment ahead of upcoming federal tax credit deadlines while finalizing project designs. IQ9S-3P Commercial Microinverters support 18 A of continuous DC current, deliver up to 548 VA of continuous output power, and are designed for high-wattage solar panels up to 770 W. This helps optimize the DC/AC ratio and increase energy production from each module, making IQ9S-3P Commercial Microinverters ideal for commercial projects using 600 W to 770 W panels. Advanced GaN technology enables high performance, cooler operation, and an industry-leading CEC weighted efficiency of 97.5%.

IQ9S-3P Commercial Microinverters meet rigorous grid compliance standards, including UL 1741-SB and IEEE 1547-2018. They include rapid shutdown, phase balancing, voltage and frequency ride-through, and loss-of-phase detection to support grid safety and system reliability. Enphase microinverter systems convert DC to AC at each panel, eliminating long high-voltage DC runs used in traditional string inverter designs and delivering a safer, all-AC architecture on the roof.

Enphase microinverters help increase energy production in shaded or uneven roof conditions and provide per-panel monitoring through the Enphase App. IQ9S-3P Commercial Microinverters that are manufactured in U.S. facilities with domestic content are designed to be ?FEOC compliant? and may help eligible projects qualify for domestic content bonus tax credits.

The products also comply with Buy America Act standards for federal direct procurement contracts. Enphase IQ9 Commercial Microinverters connect to the IQ Gateway Commercial Pro, the communication and control hub for Enphase commercial systems. The gateway provides real-time monitoring, energy management, remote firmware updates, export limiting, and other advanced grid features. It also offers flexible connectivity and easy setup through the Enphase Installer App.

IQ9S-3P Commercial Microinverters are backed by a 25-year limited warranty, while the IQ Gateway Commercial Pro comes with a 15-year limited warranty. The product is available for pre-order now in the United States through Enphase distribution partners, with production shipments expected to begin in June 2026. Certain Enphase products may qualify as FEOC-compliant under IRS Notice 2025-08.

Customers should consult their legal and tax advisors to confirm eligibility.