Micro Inverters

Enphase IQ8 microinverters convert DC to AC at each panel. Pick IQ8+, IQ8M or IQ8HC by module wattage for 240V homes, IQ8AC for 240V/208V, or IQ8P-3P for 208V three-phase, then add Enphase IQ Cable and an Enphase IQ Gateway.

Read more about Micro Inverters
  • 240V split-phase homes: IQ8+ for 235–440W modules, IQ8M for 260–460W, IQ8HC for 320–540W (also 208V).
  • 240V or 208V, 366VA peak: IQ8AC.
  • 208V three-phase commercial: IQ8P-3P.

Not sure which one fits your panels? Book 1 hour of expert solar technical support or request a written quote.

5 products

After you pick your IQ8

  • Solar panels: check module wattage and module compatibility against the IQ8 part you chose.
  • Cable & wiring: Enphase IQ Cable with 1.3 m, 2.0 m or 2.3 m connector spacing (Q-12-10-240, Q-12-17-240, Q-12-20-200), plus the Enphase IQ Terminator Cap (Q-TERM-10) and Enphase IQ Sealing Cap (Q-SEAL-10).
  • Monitoring & control and gateways & communication: the Enphase IQ Gateway (formerly IQ Envoy), Metered (ENV2-IQ-AM1-240) commissions the system and reports production.
  • Combiner boxes: Enphase IQ Combiner 5, IQ Combiner 6C, or IQ Combiner 6 with 3 Pre-Installed Breakers, to bring IQ8 branch circuits together.
  • Solar panel mounts: roof or ground racking for the array.

When micros beat string or hybrid inverters

  • Shade or dirt on some modules: each IQ8 manages its own panel, so one shaded module does not pull down the string.
  • Multi-plane roofs: different tilts and directions stay productive without complex string design.
  • Panel-level monitoring: Enphase IQ Gateway data helps pinpoint a weak module or micro.
  • Adding panels later: add modules and matching micros over time without resizing a central inverter.

Want battery backup in one box instead? Compare hybrid inverters. For utility export from a single clean roof plane, see grid-tie inverters, or start from all solar inverters.

Enphase IQ microinverters are designed to meet NEC 690.12 rapid shutdown at the module, so a micro-only array usually does not need add-on devices. If the roof also has a string or hybrid inverter array, see rapid shutdown devices.

FAQ

Microinverter, string or hybrid: which do I need?

Microinverters convert DC to AC at each panel, which suits shade, multi-plane roofs and module-level monitoring. A string inverter converts a whole string at one central box and is simpler on a clean, single-plane roof. A hybrid inverter adds battery charging and backup to grid-tied solar in one platform.

Which Enphase IQ8 should I pick?

Start with your grid and your module wattage. For 240V split-phase homes the listed parts are IQ8+ (235–440W modules), IQ8M (260–460W) and IQ8HC (320–540W, also 208V). IQ8AC is listed for 240V/208V at 366VA peak, and IQ8P-3P for 208V three-phase commercial arrays. Confirm continuous and peak output and module compatibility on each product page.

Do I need an Enphase IQ Gateway and Enphase IQ Cable?

Yes for a typical IQ8 install. Enphase IQ Cable connects the micros under the array, and the Enphase IQ Gateway commissions the system and reports production. The Enphase IQ Terminator Cap (Q-TERM-10) closes the cable end and the Enphase IQ Sealing Cap (Q-SEAL-10) covers unused connectors. Browse cable & wiring and gateways & communication.

How much does shading matter with micros?

Because each micro manages its own module, shade, dirt or snow on one panel mainly affects that panel, not the whole string. Micros don't create energy under full shade, but they protect the rest of the array's output.

Can microinverters provide battery backup?

Not on their own. IQ8 micros produce grid-interactive AC; backup needs added storage and backup hardware. For a micro + storage bill of materials, request a written quote.

Can altE help size microinverters?

Yes. Share your module model (or wattage and cell count), roof planes, and whether you need monitoring or backup. Book 1 hour of expert solar technical support or request a written quote. More guides: DIY Solar Resources Library.

More Info on Solar Micro Inverters

How Do Micro Inverters Work?

An inverter is an essential component of any solar energy system, converting direct current (DC) electricity from the solar panels into alternating current (AC) electricity used for your home's appliances. Traditionally, solar systems have utilized a single centralized "string" inverter. However, micro inverters now offer an extremely appealing alternative.

Typically, a solar micro inverter will be connected to each module (panel). Each micro inverter works independently of the others in the system, maximizing efficiency.

What Are the Benefits of a Micro Inverter?

There is a single point of failure in a system with a traditional central string inverter. This means that even a simple issue with the inverter will halt solar production completely, potentially causing a loss of power. In contrast, placing one micro inverter per module provides a highly reliable power optimizer and source of solar output. If one of the micro inverters fails, the rest continue to operate.

In addition, using micro inverters can be an intelligent way to avoid reduced production due to sunlight obstructions. From cloudy days and snow to dirt and debris, obstructions on your solar panels can be expected from time to time. However, micro inverters allow each solar panel to operate independently (versus limiting the production to the weakest solar module like a central string inverter would).

Finally, micro inverters offer an individual solar panel performance monitoring capability you might not have even considered. You'll gain the ability to compare the performance of each panel versus only having access to the performance of the system as a whole. This can be a significant benefit when it comes time to service equipment because you can rapidly pinpoint a single panel's (or micro inverter's) failure without diagnosing the entire system.

What Kinds of Solar Energy Systems are Compatible with Micro Inverters?

Micro inverters can be utilized with virtually any setup, though there are specific scenarios in which this option is most beneficial. You may want to consider solar micro inverters vs. a centralized string inverter if:

  • You have a complex solar installation, such as panels facing different directions or at varying angles
  • There is marginal shading in the area where your panels will be mounted
  • You want to maximize efficiency
  • You're interested in the ability to monitor each panel's health and production independently

How to Choose the Best Micro Inverters for Your Solar System

As you browse micro inverters, a few key characteristics can help you narrow down your options:

  • Efficiency level: Micro inverters have varying levels of efficiency, just like your solar panels. The efficiency level measures how much energy is lost during the DC to AC conversion (in the form of heat). The less lost energy, the better. High-efficiency micro inverters generally contribute to improved system efficiencies, which boosts your solar production and maximizes the return on investment.
  • Size: There are different wattage sizes of micro inverters, each one intended to be paired with the specific wattage of the panels in the system.
  • Price: Determining how much a micro inverter costs depends on various features. Remember that even though a micro inverter is usually a more significant up-front investment, the increased efficiency can pay off in the long run.

String Inverters, DC Optimizers & Micro Inverters | Comparison & Overview of 3 Grid Tie Inverters

In this video we outline the difference between three types of grid-tie inverters: A micro inverter by Enphase, a string inverter and a string inverter with DC optimizers. Watch to find out which is the right one for you!