Enphase Energy

How to Choose

The Enphase decision is really a system decision. A microinverter array needs the matching IQ Combiner and IQ Gateway to communicate and to land the AC branch circuits; adding storage later means an IQ System Controller and IQ Batteries. Buying the controller and combiner up front is far cheaper than retrofitting them. For generator integration, the IQ System Controller 3G is the version to specify — the standard Controller 3 does not manage a generator. Cable spools and connectors are ordered by branch length, so measure before you buy.

Key Specifications Explained

• IQ microinverters: Module-level MPPT and conversion, per-panel monitoring
• IQ Battery 5P: 5kWh LFP storage modules, domestic content versions available
• IQ System Controller 3 / 3G: Microgrid interconnect device; the 3G adds generator integration
• IQ Combiner 5: Combines AC branch circuits with integrated Gateway provisions
• IQ Gateway: System communications, monitoring and utility reporting

Shop the Range

Twenty-four Enphase SKUs, from connectors and terminators up to the IQ Battery 5P with domestic content at $3,926, including the System Controller 3G, Combiner 5, Gateway and 300-meter cable spools.

Frequently Asked Questions

Microinverters or a string inverter?

Microinverters win on shaded, complex or multi-plane roofs and on per-module reporting. A string or hybrid inverter is usually cheaper per watt on a clean, unshaded south-facing array.

Do I need the IQ System Controller?

Only for battery backup. A grid-tie-only array needs the Combiner and Gateway; the Controller is the device that islands your home during an outage.

Can I add Enphase batteries to an existing IQ array?

Yes, and that is a common upgrade path. You will need an IQ System Controller and, in most cases, a firmware-current Gateway.

Related Categories

• Microinverters
• Grid-Tie Inverters
• Solar Monitoring & Optimizers
• Grid-Tie Solar Systems