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

System use cases for

IQ8 Microinverters

Please note: We recently simplied our product and services naming across the

Enphase Energy System. For a quick reference chart to map old names to new, please

visit this article.

Understanding system use cases

for IQ8 series microinverters

The Enphase Energy System, with IQ8 Microinverters, enables many congurations for

dierent customer needs. The system supports four use cases that are described below.

1. Solar Only: The system does not provide any backup. It oers economic savings by

using the power produced to supply customer loads and exports excess power back to

the grid when allowed.

2. Sunlight Backup: In addition to the benets oered by the Solar Only use case, the

system provides backup when the sun is shining for up to four essential loads.

3. Home Essentials Backup: In addition to the benets oered by the Sunlight Backup

solution, the system provides backup during day or night for essential loads.

4. Full Energy Independence: In addition to the benets oered by the Home Essentials

Backup use case, the system provides backup during day or night for the whole home.

TECHBRIEF

Summary of content (7 pages)

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TECH BRIEF System use cases for IQ8 Microinverters Please note: We recently simplified our product and services naming across the Enphase Energy System. For a quick reference chart to map old names to new, please visit this article. Understanding system use cases for IQ8 series microinverters The Enphase Energy System, with IQ8 Microinverters, enables many configurations for different customer needs. The system supports four use cases that are described below. 1.
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Solar Only In this use case, the IQ8 series microinverters operate in a grid interactive mode. The system does not provide any backup and offers economic savings by using solar power to offset 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).
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Figure 2: Sunlight Backup single line diagram IQ8 IQ8 IQ8 IQ8 IQ8 Wh Wireless Cell Wireless modem comms PLC Gateway PLC Wireless comms IQ Combiner 4/4C To utility grid 120/240V single phase service only N Storage Autotransformer AC Combiner Generator G Main loads panel IQ System Controller 2 NO3 NC2 NC1 NO2 NO1 Essential loads solution (Required for Sunlight Backup) DPST Enphase System Shutdown Switch Essential load 1 Essential load 2 Sub panel AC to DC power supply IQ Load Controlle
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Home Essentials Backup In this use case, the Enphase Energy System provides backup using IQ8 series microinverters and IQ Batteries during day or night for essential loads. The system has at least one IQ Battery 3/3T. IQ System Controller 2 is installed on the load side of an existing main load panel or service equipment. This use case can be used when the Enphase Energy system is configured to provide backup to a few pre-selected, essential load circuits.
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Full Energy Independence In this use, the Enphase Energy System provides backup using IQ8 series microinverters and IQ Batteries during day or night. The system must have at least 10 kWh of IQ Batteries installed i.e., at least an IQ Battery 10/10T. Depending on the IQ Battery sizing, the system will be able to sustain off grid operation for extended periods of time. This use case supports whole home backup i.e., backing up all the loads in the home.
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COMPONENT TYPE SOL AR O N LY SUNLIGHT BACKUP HOME ESSENTIALS BACKUP FULL ENERGY INDEPENDENCE As needed per system design As needed per system design (up to 64A continuous) As needed per system design (up to 64A continuous) As needed per system design (up to 64A continuous) PRODUCT NAME AND MODEL NUMBER Microgrid-forming microinverters (240V AC) IQ8 Series IQ8-60-2-US IQ8PLUS-72-2-US IQ8M-72-2-US IQ8A-72-2-US IQ8H-240-72-2-US Batteries IQ Batteries ENCHARGE-3-1P-NA ENCHARGE-10-1P-NA ENCHARGE-3T-
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SOL AR O N LY SUNLIGHT BACKUP HOME ESSENTIALS BACKUP FULL ENERGY INDEPENDENCE 0 0, 1, or 2 0, 1, or 2 0, 1, or 2 Circuit breakers for IQ8 PV, IQ Battery, and generator circuits in IQ System Controller 2 IQ System Controller 2 circuit breakers BRK-20A-2P-240V-B (Eaton SKU: BR220B) BRK-30A-2P-240V (Eaton SKU: BR230B) BRK-40A-2P-240V (Eaton SKU: BR240B) BRK-60A-2P-240V (Eaton SKU: BR260) BRK-80A-2P-240V (Eaton SKU: BR280) 0 1 or 2 (For PV and generator) 2 or 3 (For PV, batteries, and generator) 2