System use cases for IQ8 Microinverters

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and other names are trademarks of Enphase Energy, Inc. Data subject to change.

IQ8SUC-TB-0006-01-EN-US-2021-11-05

Solar Only

In this use case, the IQ8 series microinverters operate in a grid interactive mode. The system

does not provide any backup and oers economic savings by using solar power to oset

the customer’s consumption from the grid. Excess PV power can be exported back to grid

when allowed by utilities and local Authorities Having Jurisdiction (AHJs).

The advantage of this use case with IQ8 PV is that the system can be easily upgraded to

a Sunlight Backup use case by adding an IQ System Controller 2 and an essential loads

solution.

Figure 1: Solar Only single line diagram

Sunlight Backup

In this use case, the Enphase Energy System provides backup using IQ8 series

microinverters when the sun is shining. The system does not include any IQ Batteries. The

system can support PV branch circuits rated for up to 64A continuous current output.

IQ System Controller 2 is installed on the load side of an existing main load panel. This

conguration must be used with an Essential Loads Solution. An Essential Loads Solution

consists of:

• An o-the-shelf panel with a maximum of four pre-selected, essential load circuits that

are backed up by the system.

• Two IQ Load Controllers, each enabling ne-grained, circuit-level control for two of the

essential load circuits.

Using this conguration for backing up an entire home will lead to a poor customer

experience and is not a use case supported by Enphase.

To utility grid

120/240V single

phase service only

IQ Gateway

IQ Combiner 4/4C

Mobile

connect

Main loads panel

N G

IQ8IQ8IQ8IQ8IQ8

PLC