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Enphase’s first gallium-nitride microinverter goes head-to-head with the proven IQ8 silicon lineup. We compare output, efficiency, panel ceiling, and weight from the official datasheets — and answer the question that actually matters: wait, or install now?
GaN
IQ9N Semiconductor
427 VA
IQ9N Max Output
97.5%
IQ9N CEC Efficiency
580 W
IQ9N Panel Ceiling
The IQ9N is the more modern microinverter: it runs cooler on GaN semiconductors, weighs less, is ready for high-wattage panels up to 580 W, and matches the best IQ8 units on efficiency (97.5% CEC). But it does not beat the whole IQ8 lineup — the silicon IQ8P still delivers higher continuous output (475 VA) and pairs larger panels (up to 670 W). Sunlight Backup is available on both generations, and US residential IQ9N availability is not yet confirmed. So for most homeowners ready to go solar today, the IQ8 lineup remains the proven, currently-shipping choice.
Every Enphase residential microinverter side-by-side, straight from the official datasheets. The highlighted row is the new GaN-based Enphase IQ9N.
| SKU | Max Continuous Output | CEC Eff. | Peak Eff. | Module Pairings | Weight | Semiconductor |
|---|---|---|---|---|---|---|
| IQ8 | 240 VA | 97.0% | 97.7% | 235–350 W | 1.08 kg | Silicon |
| IQ8+ | 290 VA | 97.0% | 97.7% | 235–440 W | 1.08 kg | Silicon |
| IQ8M | 325 VA | 97.5% | 97.8% | High-output modules | 1.08 kg | Silicon |
| IQ8A | 349 VA | 97.0% | 97.7% | High-output modules | 1.08 kg | Silicon |
| IQ8H-240 | 380 VA | 97.0% | 97.6% | 320–540 W | 1.08 kg | Silicon |
| IQ8P | 475 VA | 97.5% | 97.6% | 430–670 W | 1.6 kg | Silicon |
| IQ9N (GaN) | 427 VA | 97.5% | 97.8% | 340–580 W | 1.1 kg | GaN |
Max continuous output (VA), 240 V split-phase, per official Enphase datasheets. IQ9N datasheet
Datasheet-published and US store-listed — confirm US residential install timing with your installer
Enphase has published the US/North-America residential IQ9N datasheet (December 2025) and lists the SKU (IQ9N-A-DOM-US) on its US store. The announced, shipping residential launch so far is Europe (shipments began June 5, 2026). Enphase’s US press releases to date cover the commercial IQ9 units (IQ9N-3P, IQ9S-3P), not residential shipping. Treat US residential IQ9N as published-and-listed but confirm orderability and lead times with your installer before planning around it.
The spec sheet rewards careful reading. Five things the numbers actually tell a homeowner.
Output: IQ9N’s 427 VA continuous sits between IQ8H-240 (380 VA) and IQ8P (475 VA) — strong, but not the highest-output Enphase residential unit.
Efficiency: 97.5% CEC / 97.8% peak ties or marginally beats the best IQ8 residential units. On the US CEC number, GaN’s gain is modest — the real story is cooler operation and power density, not a headline efficiency jump.
Panel ceiling: IQ9N pairs up to 580 W — above mainstream IQ8 (IQ8+ tops at 440 W), but the silicon IQ8P still pairs larger panels (up to 670 W). Frame IQ9N as “GaN-efficient and high-power-panel ready,” not “supports the biggest panels Enphase makes.”
Sunlight Backup / grid-forming: supported on both IQ8 and IQ9N with an IQ System Controller — this is NOT a new IQ9 differentiator; it carries over from IQ8.
Weight: IQ9N (1.1 kg) is IQ8-class compact and lighter than IQ8P (1.6 kg) despite supporting bigger panels — a genuine GaN power-density gain.
Gallium nitride is the headline of the IQ9 generation. Here is what the switch off silicon does — and doesn’t — do for your roof.
GaN transistors switch faster and waste less energy as heat than the silicon used through IQ8. Enphase ties the lower heat to improved long-term reliability — the failure mode that ages any power electronic is heat.
IQ9N delivers 427 VA continuous from a 1.1 kg unit — essentially IQ8-class size and lighter than the 1.6 kg IQ8P, despite supporting panels up to 580 W. More output per gram is the clearest GaN win.
The 340–580 W pairing window fits today’s mainstream 440–500 W+ residential panels (REC, Silfab, Qcells) with headroom — well above the older IQ7/IQ8+ ceiling.
Up to a 25-year limited warranty (with an internet-connected IQ Gateway) — the headline term carries over from IQ8, now on cooler-running GaN hardware Enphase positions as more reliable.
Both are honest answers depending on your situation. The recommendation comes down to availability and how much the incremental GaN gain is worth to you.
You’re ready to go solar and your installer can source IQ8 today. The lineup is proven, currently shipping, carries the same 25-year warranty, and supports Sunlight Backup. Waiting indefinitely for a marginal hardware upgrade usually costs more in lost production than it saves.
Only worth it if you can flex your timeline and the GaN advantages — cooler operation, lighter unit, power density — matter to you specifically. Bear in mind US residential availability is not yet confirmed, so “waiting” has no firm end date.
Every figure on this page is quoted from an Enphase primary source.
NuWatt specs the right unit for your panels and timeline — IQ8 today, IQ9N when it lands. Get a transparent quote that names the exact model.
The IQ9N is a genuinely modern design, but the IQ8 lineup is proven, shipping, and carries the same 25-year warranty and Sunlight Backup. NuWatt installs Enphase across MA, CT, RI, NH, ME, VT, NJ, PA, and TX — and we’ll spec the unit that actually serves your home and timeline.