Sunlight Backup

For systems with IQ8 Microinverters.

An Enphase Sunlight Backup system with IQ8 Microinverters keeps essential appliances running during a grid outage without the need to install a battery. This makes Sunlight Backup systems ideal for homeowners that want basic, daytime protection from grid outages while reducing their initial investment. In addition, Sunlight Backup systems make it even easier than Solar Only systems to add batteries in the future since the IQ System Controller 2 that is required for Home Essentials Backup or Full Energy Independence will already be integrated into the system.


In this configuration, 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.

The IQ System Controller 2 is installed on the load side of an existing main load panel. This configuration must be used with an essential loads solution, consisting of:

  • An off-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 fine-grained, circuit-level control for two of the essential load circuits.

Using this configuration for backing up an entire home will lead to poor customer experience and is not a use case supported by Enphase.


Here are the main components you'll need for this system.


IQ8 Microinverter

Our newest IQ8 Microinverters are the industry’s first grid-forming microinverters with split-phase power conversion capability to convert DC power to AC power efficiently.

Learn more

Download installation guide