Key features
Save by avoiding main panel upgrades
Install up to 4x more PV and 80 kWh of storage
Deliver more power with busbar overload control
Avoid costly utility transformer upgrades
Enable export mode for IQ Batteries
Maximize savings by exporting stored energy
Install larger capacity EV chargers
Expand existing NEM 1 and NEM 2 systems
Easy install with little to no additional hardware
Power Control with busbar overload control
Power Control with busbar overload control guarantees that the total power on the main panel busbar remains within the recommended limits. This advanced technology intelligently adjusts the power output from solar panels and batteries based on grid input and home consumption.
As a result, it enables the safe installation of larger solar and battery systems while maximizing power through a larger back feed—without the need for costly upgrades to the main panel.
Without Power Control
The energy system size is limited by the main panel busbar and main breaker rating. This typically results in smaller PV systems without batteries.
Power Control on feeder
The backfeed current is still limited, but larger systems can be installed to produce more total energy throughout the day.
Power Control on busbar
The backfeed is managed dynamically using Power Control, eliminating limitations while keeping the main panel operating safely.
More power, easy installation
Whether configured for backup or not, Enphase Energy Systems require practically no additional hardware to take full advantage of Power Control with busbar overload control.
Systems with backup use the integrated backfeed current transformers (CT) and IQ Meter Collar to monitor all of the energy sources feeding the main and the backup panels. If the total exceeds the main panel busbar rating, Power Control will curtail battery power first, followed by PV.
Systems without backup use the backfeed and consumption current transformers (CTs) to monitor all of the energy sources feeding the main panel. If the total exceeds the busbar rating, Power Control will curtail battery power first, followed by PV.
Availability of features by system type
| Feature | Benefit | Availability | Certification link |
|---|---|---|---|
| Main panel upgrade avoidance with busbar overload control¹ | Accelerates the system payback period by enabling maximum renewable energy generation | Now | IQ8 Certification |
| Avoids the cost of a panel upgrade for a large PV system | Now | IQ9 Certification | |
| Main panel upgrade avoidance with feeder control¹ | Avoids the cost of a panel upgrade for a large PV system using NEC 120% rule | Now | IQ8 Certification IQ9 Certification |
| Aggregate power export limit¹ | Easier interconnection by meeting utility PV export limits | Now | IQ8 Certification |
| Avoids the cost of a transformer upgrade for a large PV system | Now | IQ9 Certification | |
| IQ EVSE main breaker trip avoidance | Enables the installation of a more powerful IQ EV Charger by avoiding main breaker trips when home loads are extremely high | Now | Gen-1 EV Charger Gen-2 EV Charger |
| NEM integrity mode (NEM expansions) | Now | IQ8 Certification IQ9 Certification |
¹ Can only be used in a system with solar IQ8 Microinverters.
| Feature | Benefit | Availability | Certification link |
|---|---|---|---|
| Aggregate power export limit² | Easier interconnection by meeting the utility export limits for PV | Now | IQ8 Certification |
| Avoids the cost of a transformer upgrade for a large PV system | Now | IQ9 Certification | |
| Main panel upgrade avoidance with busbar overload control² | Accelerates the system payback period by enabling maximum renewable energy generation | Now | IQ8 Certification |
| Avoids the cost of a panel upgrade for a large PV and battery system | Now | IQ9 Certification | |
| Main panel upgrade avoidance with feeder control² | Avoids the cost of a panel upgrade for a large PV and battery system | Now | IQ8 Certification IQ9 Certification |
| Battery import only¹ | Easier interconnection by meeting utility requirements for non-exporting batteries | Now | Battery Certification |
| Battery export only¹ | Enables the battery to export to the grid, maximizing the economic benefits under NEM 3.0 | Now | Battery certification |
| NEM integrity mode (NEM expansions) | Now | IQ8 Certification IQ9 Certification |
¹ Can be used in a system with solar IQ8 or IQ7/6 or M-Series Microinverters.
² Can only be used in a system with solar IQ8 Microinverters.
| Feature | Benefit | Availability | Certification link |
|---|---|---|---|
| Aggregate power export limit² | Easier interconnection by meeting the utility export limits for PV | Now | IQ8 Certification |
| Avoids the cost of a transformer upgrade for a large PV system | Now | IQ9 Certification | |
| Main panel upgrade avoidance with busbar overload control² | Accelerates the system payback period by enabling maximum renewable energy generation | Now | IQ8 Certification |
| Avoids the cost of a panel upgrade for a large PV and battery system | Now | IQ9 Certification | |
| Main panel upgrade avoidance with feeder control² | Avoids the cost of a panel upgrade for a large PV and battery system using NEC 120% rule | Now | IQ8 Certification IQ9 Certification |
| Battery import only¹ | Easier interconnection by meeting utility requirements for non-exporting batteries | Now | Battery Certification |
| Battery export only¹ | Enables the battery to export to the grid, maximizing the economic benefits under NEM 3.0 | Now | Battery certification |
| NEM integrity mode (NEM expansions) | Now | IQ8 Certification IQ9 Certification |
¹ Can be used in a system with solar IQ8 or IQ7/6 or M-Series Microinverters.
² Can only be used in a system with solar IQ8 Microinverters. IQ System Controller cannot support more than 64 A of solar IQ8 Microinverters.
| Feature | Benefit | Availability | Certification link |
|---|---|---|---|
| IQ Battery oversubscription¹ | Enables more battery capacity while limiting the continuous power | Now | Certification, p.4 |
| Aggregate power export limit² | Easier interconnection by meeting the utility export limits for PV | Now | Certification |
| Avoids the cost of a transformer upgrade for a large PV system | Now | Certification | |
| Aggregate power export limit for batteries¹ | Avoids the cost of a transformer upgrade for a large export-only battery system | Now | Certification |
| Main panel upgrade avoidance with busbar overload control² | Accelerates the system payback period by enabling maximum renewable energy generation Avoids the cost of a panel upgrade for a large PV and battery system | Now | Certification |
| Main panel upgrade avoidance with feeder control² | Avoids the cost of a panel upgrade for a large PV and battery system | Now | Certification |
| Battery import only¹ | Easier interconnection by meeting utility requirements for non-exporting batteries | Now | Certification, p.2 |
| Battery export only¹ | Enables the battery to export to the grid, maximizing the economic benefits under NEM 3.0 | Now | Certification |
| IQ EVSE main breaker trip avoidance | Enables the installation of a more powerful IQ EV Charger by avoiding main breaker trips when home loads are extremely high | Now | Certification |
| NEM integrity mode (NEM expansions) | Now | Certification |
¹ Can be used in a system with solar IQ8 or IQ7/6 or M-Series Microinverters.
² Can only be used in a system with solar IQ8 Microinverters.
| Feature | Benefit | Availability | Certification link |
|---|---|---|---|
| IQ Battery oversubscription¹ | Enables more battery capacity while limiting the continuous power | Now | Certification, p.4 |
| Aggregate power export limit² | Easier interconnection by meeting the utility export limits for PV | Now | Certification |
| Avoids the cost of a transformer upgrade for a large PV system | Now | Certification | |
| Aggregate power export limit for batteries¹ | Avoids the cost of a transformer upgrade for a large export-only battery system | Now | Certification |
| Main panel upgrade avoidance with busbar overload control² | Accelerates the system payback period by enabling maximum renewable energy generation Avoids the cost of a panel upgrade for a large PV and battery system | Now | Certification |
| Main panel upgrade avoidance with feeder control² | Avoids the cost of a panel upgrade for a large PV and battery system using NEC 120% rule | Now | Certification, p.6 |
| Battery import only¹ | Easier interconnection by meeting utility requirements for non-exporting batteries | Now | Certification, p.2 |
| Battery export only¹ | Enables the battery to export to the grid, maximizing the economic benefits under NEM 3.0 | Now | Certification |
| IQ EVSE main breaker trip avoidance | Enables the installation of a more powerful IQ EV Charger by avoiding main breaker trips when home loads are extremely high | Now | Certification |
| NEM integrity mode (NEM expansions) | Now | Certification |
¹ Can be used in a system with solar IQ8 or IQ7/6 or M-Series Microinverters.
² Can only be used in a system with solar IQ8 Microinverters. IQ System Controller cannot support more than 64 A of solar IQ8 Microinverters.
Documentation
Find important Power Control documents here. To access additional product information, visit our documentation center.
