Enphase IQ8HC-72-M-DOM-US Domestic Content Microinverter

The Enphase IQ8HC-72-M-DOM-US is a 380 VA continuous-output Enphase IQ8 microinverter engineered for residential and light-commercial solar installations that need high efficiency and ITC domestic content bonus adder eligibility. Manufactured in the USA with domestically produced PCBA, electrical parts, and enclosure, this IQ8HC microinverter delivers module-level DC-to-AC conversion at 97.3% peak efficiency while integrating directly into the Enphase Energy System alongside the IQ Battery, IQ Gateway, and Enphase App.

Note: The IQ8HC-72-M-DOM-US specifications are preliminary pending final compliance. This SKU is made in the USA and is designed to meet the requirements for eligibility for the ITC domestic content bonus adder — confirm current compliance status with your installer or A1 SolarStore before purchase.

Note: The IQ8HC cannot be mixed with previous-generation Enphase microinverters (IQ7 Series, IQ6 Series, and earlier) in the same system. An IQ Gateway is required during installation to apply any region-specific grid interconnection adjustments required by your Authority Having Jurisdiction (AHJ) or utility.

Key specifications

• Maximum continuous output power: 380 VA @ 240 VAC (split-phase) / 360 VA @ 208 VAC (single-phase); peak output 384 VA / 366 VA respectively
• Peak efficiency: 97.3% @ 240 VAC / 97.2% @ 208 VAC; CEC weighted efficiency 97.0% / 96.5%
• Compatible module power range: 320–540W (MPPT voltage range 29.5–45 V; max. input DC voltage 60 V; max. module Isc 20 A)
• AC output: 240 V split-phase (L-L), 60 Hz nominal; up to 10 units per 20 A (L-L) branch circuit @ 240 VAC
• Certifications & warranty: UL 1741-SA (CA Rule 21), UL 1741-SB (IEEE 1547:2018), UL Listed PV rapid shutdown equipment (NEC 2014–2023); 25-year limited warranty

Domestic content and ITC eligibility

The IQ8HC-72-M-DOM-US is manufactured in the United States, with the printed circuit board assembly (PCBA), electrical components, and enclosure all domestically produced. This positions the unit for consideration under the ITC domestic content bonus adder available through the Inflation Reduction Act. For solar projects where ITC incentive optimization matters — commercial installations, community solar, or homeowners maximizing their federal tax credit — this SKU provides a pathway that standard imported microinverters cannot. Consult your tax advisor and confirm current compliance status before specifying this unit.

Where it fits

• High-power residential rooftop: Pairs with 400W–540W monocrystalline or TOPCon modules common in modern residential installs — no power clipping on today's large-format panels.
• ITC-sensitive commercial projects: Designed for project owners seeking domestic content bonus adder eligibility under the Inflation Reduction Act.
• New Enphase system builds: A natural fit for any installer standardizing on IQ8 Series hardware, IQ Batteries, and the Enphase App ecosystem.
• Grid-tied with backup capability: Supports whole-home energy independence when paired with IQ System Controller 2 or 3 and IQ Batteries for islanding during outages.

Microgrid-forming and off-grid capability

• Powered by Enphase's proprietary 55-nm ASIC, the IQ8HC can switch between grid-tied and off-grid modes — enabling solar production even during grid outages when installed with an IQ System Controller 2 or 3.
• Superfast response times to load changes reduce constraints on battery sizing, giving system designers more flexibility in how they size storage.
• Remote automatic firmware updates keep grid profile configurations current without a truck roll, and the unit is configurable for a wide range of grid profiles including CA Rule 21 and IEEE 1547:2018.
• Class II double-insulated, NEMA Type 6 enclosure is rated for wet and outdoor locations across an operating range of -40°F to 149°F (-40°C to 65°C).

System compatibility

The IQ8HC-72-M-DOM-US uses Stäubli MC4 integrated connectors for direct plug-and-play connection to PV modules — no separate DC combiner or additional DC-side protection required. It connects to the IQ Gateway via power line communication (PLC) over a simple two-wire AC cable, eliminating separate data wiring runs. Up to 10 units can be placed on a single 20 A (L-L) branch circuit at 240 VAC. This unit is IQ8 Series only — it cannot be combined with IQ7, IQ6, or earlier Enphase generations in the same system. Module compatibility can be verified using the Enphase microinverter compatibility calculator at enphase.com.

Why choose the Enphase IQ8HC-72-M-DOM-US?

The IQ8HC-72-M-DOM-US offers the highest-output variant in the IQ8 Series paired with a domestic content manufacturing profile that most microinverters on the market cannot match. At 97.3% peak efficiency and a 380 VA continuous rating, it handles today's large-format PV modules without derating while keeping per-unit energy yield at the top of its class. For installers and project owners who need to maximize both production output and ITC incentive value, A1 SolarStore offers this unit as a purpose-built solution for that combination of requirements.