IQ Gateway software version 7.3.514 is the next release version with improvements in system stability, commissioning process, and enhanced Zigbee and Wi-Fi communications.

Gateways supported: IQ Gateway, IQ Combiner 3/3C/3-ES/3C-ES/4/4C, IEEE 1547-2018 compliant IQ Gateway and IQ Combiner 4/4C, Envoy S Metered for North America, Envoy S Standard for North America
Countries: USA, Mexico, Canada, Brazil
Microinverters supported: IQ8 Series, IQ7 Series, IQ6 Series, M Series, S Series
Supported system configurations:

Grid-tied Solar Only system with M Series or S Series Microinverters, Envoy S Metered for North America
Grid-tied Solar Only system with IQ6 Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C
Grid-tied Solar Only system with IQ7 Series or IQ8 Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C or IEEE 1547-2018 compliant IQ Gateway or IEEE 1547-2018 compliant IQ Combiner 4/4C
Sunlight Backup system with IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C or IEEE 1547-2018 compliant IQ Gateway or IEEE 1547-2018 compliant IQ Combiner 4/4C, and IQ System Controller 2
Home Essentials Backup or Full Energy Independence system with IQ6 Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T
Home Essentials Backup or Full Energy Independence system with IQ7 Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C or IEEE 1547-2018 compliant IQ Gateway or IEEE 1547-2018 compliant IQ Combiner 4/4C, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T
Home Essentials Backup or Full Energy Independence system with IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C or IEEE 1547-2018 compliant IQ Gateway or IEEE 1547-2018 compliant IQ Combiner 4/4C, IQ System Controller 2 and IQ Battery 3/3T/10/10T
Home Essentials Backup or Full Energy Independence system with M215 Series or M250 Series Microinverters, Envoy S Metered for North America, IQ System Controller 1/2, and IQ Battery 3/3T/10/10T
Home Essentials Backup with IQ System Controller 1/2, and IQ Battery 3/3T/10/10T

Note: The following features are supported only in specific configurations above:

Load control, generator support, and solar circuit control i.e., PV shedding are supported in configurations 4 through 9.
Grid services are supported in configurations 5 through 9.

Release notes:

#	Feature	Description
1	Improvements to System Stability	a. Fixes issues wherein Sunlight Jump Start does not happen. These are for rare scenarios, like when the System Shutdown Switch is turned back on after it was turned off or when a generator has failed to start the system. b. Fixes a rare bug wherein a system restart does not happen if a generator failure happens while the system is in off grid mode with the generator connected. c. Increases the reliability of on-grid to off-grid system transitions by improving handling of high frequency ride through conditions. d. Increases the reliability of off-grid to on-grid transitions by improving handling of conditions wherein the grid comes back to normal operation with a low frequency.
2	Improvements to the Commissioning and Software Upgrading Process	a. Gateway software reports the correct status of battery inverter mode (grid-tied, multi-mode on-grid, multi-mode off-grid etc.) to the Enphase Installer App. This is displayed in the Enphase Installer App during functional validation. b. Reduces commissioning time for IQ8 PV microinverters by optimizing the communication between the gateway and IQ8 microinverters during provisioning. Provisioning steps repeated due to IQ8 rebooting post propagation of system configuration are reduced, leading to time savings. c. Enhances logging for battery and system controller upgrades by reporting the names of the files along with download start and download end events to Enphase Cloud. d. Improves the reliability of software updates when the internet connection is via a cellular modem. This is achieved by increasing the timeout limit for specific files that are large in size. e. Reduces the time taken to update the IQ System Controller firmware from the gateway by providing flow control during transfer of packets via Zigbee. f.Improves the software upgrade process to automatically handle conditions like low state of charge, the system going off-grid and then coming back on-grid as well as devices losing Zigbee connection and then reconnecting. g.Fixes an issue wherein IQ8 Series Microinverters fail provisioning. This is a very rare scenario wherein an IQ8 microinverter fails to receive system configuration during provisioning. h.Fixes an issue wherein the gateway reboots upon completion of device commissioning using the Enphase Installer App. i.Fixes an issue where the IQ System Controller firmware is not updated immediately after commissioning and functional validation. j.Fixes an issue where system configuration files are propagated to batteries and the system controller multiple times. k.Fixes an issue where specific IQ Battery models (SKU: B03-A01-US00-1-3) were not upgrading to the new Battery Management Unit (BMU) firmware and causing reset events.
3	Improvements to System Behavior	a. IQ System Controller 2 includes a hardware protection feature wherein it detects AC voltage on either side of the PV breaker and goes to a safe state if there is a significant difference in the magnitude of the AC voltage readings from either side of the breaker while the internal PV relay is closed. The PV relay is the built-in protection for IQ8 grid forming microinverters on the PV or solar port (DER1) of the IQ System Controller 2. This rule has been modified to be active only when: The IQ System Controller 2 is commissioned. IQ8 Series Microinverters are connected to the PV port. There is a 20 V delta in AC voltage readings from either side of the PV breaker after 30 ms of the PV relay closing (this was 20 ms earlier). b. Retrieves more debugging data from the Battery Management Unit (BMU) for IQ Batteries and sends the same to Enphase cloud to enable better system monitoring and debugging. c. Improves the handling of Grid Services commands by ensuring the commands persist across IQ Gateway reboots.
4	Improvements to IQ Battery Behavior	a. Supports battery-only backup systems (configuration 9 as described in “Supported System Configurations” above) by resolving issues like gateway rebooting and batteries getting disconnected due to false triggers of the PV breaker open rule. Improvements to the PV breaker open rule are described in the “Improvements to System Behavior” section. b. Fixes an issue wherein the status of the DC ON/OFF switch was not accurately communicated by the batteries and gateway to the cloud. c. Fixes an issue wherein batteries would not maintain the reserve state of charge (SoC) by charging from the grid. d. Validates if current transformers (CTs) used for monitoring consumption are missing or have failed. Batteries are set to an idle mode if consumption CTs are missing or have failed to ensure the Import-Only mode per IQ Battery 3/3T/10/10T UL Power Control System (PCS) Certification Requirements Decision (CRD) is not violated in case of CT failures. e. Fixes an issue wherein IQ Batteries do not charge with maximum power when the system is off grid with a generator connected.
5	Improvements to Zigbee and Wi-Fi Communication	a. Reduces profile propagation time from the IQ Gateway to the IQ System Controller. . b. Supports remote restarts of the Zigbee communication processes inside the IQ Gateway software through the Enphase Installer Portal. This is to aid in remote debugging and improve customer support capabilities. c. Improves the connectivity to Wi-Fi networks by ensuring the parameters used to tune the Wi-Fi module’s front end are appropriate. d. Fixes the display of an incorrect battery state in Live Vitals in the Enphase Homeowner and Installer Apps when batteries have lost Zigbee communication.
6	Bug Fixes and Feature Enhancements	a. Reports load name and battery profile via local API to the Enphase Homeowner App to enable the app to display these details when the system has lost cloud connectivity and is reporting to the app via local connectivity (i.e., via the local area network, assuming the phone and the gateway are on the same local area network). b. Enhances the IQ Gateway security by integrating the (Cloud Certification Authority) CCA into gateway signing. c. Fixes an issue wherein IQ Batteries were not charging when the Power Export Limit (PEL) is enabled in the grid profile and the battery is in savings mode. d. Fixes an issue wherein a lot of “Systems GHz Comms Signal Low” events are sent to the Enphase cloud. Note that the excessive number of events is only seen by Enphase employees. The number of events is reduced in this software release to enable customer support teams to use internal tools to better support system owners and installers.

This release is being deployed in factories to all IQ Gateway, IQ Combiner, and Envoy S devices stated above. It is also being released via the Enphase Installer App for new systems as well as via remote software upgrades for existing systems. Remote software upgrades for this release will exclude systems that have only cellular connectivity.

IQ Gateway software release notes (7.3.466)

January 6, 2023

IQ Gateway software version 7.3.466 is the next release version compliant with IEEE 1547-2018 for residential applications. It supports only the new IEEE 1547-2018 compliant IQ Gateways (SKU: ENV2-IQ-AM1-240) and IQ Combiners (SKUs: X2-IQ-AM1-240-4 and X2-IQ-AM1-240-4C).

Gateways supported: IQ Gateway (SKU: ENV2-IQ-AM1-240), IQ Combiner 4/4C (SKUs: X2-IQ-AM1-240-4 and X2-IQ-AM1-240-4C)
Countries: USA
Microinverters supported: IQ8 Series, IQ7 Series
Supported system configurations:

Grid-tied Solar Only system with IQ7 Series or IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C
Sunlight Backup system with IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C, and IQ System Controller 2
Home Essentials Backup or Full Energy Independence system with IQ7 Series Microinverters, IQ Gateway or IQ Combiner 4/4C, IQ System Controller 1/2, and IQ Battery 3/3T/10/10T
Home Essentials Backup or Full Energy Independence system with IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C, IQ System Controller 2, and IQ Battery 3/3T/10/10T

Note: The following features are supported only in specific configurations above:

Load control, generator support, and solar circuit control i.e., PV shedding are supported in configurations 2, 3, and 4.
Grid services are supported in configurations 3 and 4.

Release notes:

#	Feature	Description
1	Compliant with IEEE 1547-2018 Regulations (also present in IQ Gateway software release 7.3.463)	a. Supports limiting PV active power as a percentage of the nameplate. b. Supports enable or disable of permit service to allow or stop PV power production remotely. c. Meets the enter service criteria, where PV power production does not start unless the system voltage and frequency are within the specified limits for the prescribed delay time. After the delay time, power is ramped linearly at a rate not exceeding the nameplate power divided by the enter service period. d. Maintains exported active power at the point of common coupling (PCC) at less than 10% of the aggregate system rating. e. Supports the following mutually exclusive reactive power control modes: Constant power factor mode: the system operates at a constant power factor Voltage-reactive power mode (volt-var): the reactive power of the system is controlled as a function of voltage using a volt-var curve Active-reactive power mode (watt-var): the reactive power of the system is controlled as a function of active power using a watt-var curve Constant reactive power mode: the system maintains a constant reactive power f. Supports active power control for temporary frequency disturbances according to a parameterized frequency-droop (freq-watt) characteristic. g. Supports bringing the net power export to zero before going off-grid (when commanded to do so by user). h. Supports interoperability and data exchange over the local communication interface using IEEE 2030.5, including: Provision of nameplate information Provision of monitoring information, and Ability to read and write function and mode setting
2	Bug Fixes	Fixes an issue where sites were unable to commission with a Zigbee range extender and could not proceed with functional validation.

Feature

Description

Compliant with IEEE 1547-2018 Regulations (also present in IQ Gateway software release 7.3.463)

a. Supports limiting PV active power as a percentage of the nameplate.

b. Supports enable or disable of permit service to allow or stop PV power production remotely.

c. Meets the enter service criteria, where PV power production does not start unless the system voltage and frequency are within the specified limits for the prescribed delay time. After the delay time, power is ramped linearly at a rate not exceeding the nameplate power divided by the enter service period.

d. Maintains exported active power at the point of common coupling (PCC) at less than 10% of the aggregate system rating.

e. Supports the following mutually exclusive reactive power control modes:

Constant power factor mode: the system operates at a constant power factor

Voltage-reactive power mode (volt-var): the reactive power of the system is controlled as a function of voltage using a volt-var curve

Active-reactive power mode (watt-var): the reactive power of the system is controlled as a function of active power using a watt-var curve

Constant reactive power mode: the system maintains a constant reactive power

f. Supports active power control for temporary frequency disturbances according to a parameterized frequency-droop (freq-watt) characteristic.

g. Supports bringing the net power export to zero before going off-grid (when commanded to do so by user).

h. Supports interoperability and data exchange over the local communication interface using IEEE 2030.5, including:

Provision of nameplate information

Provision of monitoring information, and

Ability to read and write function and mode setting

Bug Fixes

Fixes an issue where sites were unable to commission with a Zigbee range extender and could not proceed with functional validation.

This release is being deployed in factories to the IEEE 1547-2018 compliant IQ Gateway and IQ Combiner devices. IQ Gateway software 7.3.466 release is being deployed via remote software upgrades for the new sites that receive IQ Gateways with software version 7.3.463 or lower version from the factory for Enphase Energy Systems. Installers have to contact Enphase Support while installing Enphase Energy Systems at the site with IQ Gateway which has software version 7.3.463 or lower version from the factory.

IQ Gateway software release notes (7.3.463)

December 7, 2022

IQ Gateway software version 7.3.463 is the next major release version compliant with IEEE 1547-2018 for residential applications. It supports Grid-tied Solar Only system with new IEEE 1547-2018 compliant IQ Gateways (SKU: ENV2-IQ-AM1-240) and IQ Combiners (SKUs: X2-IQ-AM1-240-4 and X2-IQ-AM1-240-4C).

Platforms supported: IQ Gateway (SKU: ENV2-IQ-AM1-240), IQ Combiner 4/4C (SKUs: X2-IQ-AM1-240-4 and X2-IQ-AM1-240-4C)
Geographies: USA
Microinverters supported: IQ8 Series, IQ7 Series
Supported system configurations: Grid-tied Solar Only system with IQ7 Series/IQ8 Series Microinverters, IQ Gateway or IQ Combiner 4/4C

Release notes:

#	Feature	Description
1	Compliant with IEEE 1547-2018 Regulations	a. Supports limiting PV active power as a percentage of the nameplate. b. Supports enable or disable of permit service to allow or stop PV power production remotely. c. Meets the enter service criteria, where PV power production does not start unless the system voltage and frequency are within the specified limits for the prescribed delay time. After the delay time, power is ramped linearly at a rate not exceeding the nameplate power divided by the enter service period. d. Maintains exported active power at the point of common coupling (PCC) at less than 10% of the aggregate system rating. e. Supports the following mutually exclusive reactive power control modes: Constant power factor mode: the system operates at a constant power factor Voltage-reactive power mode (volt-var): the reactive power of the system is controlled as a function of voltage using a volt-var curve Active-reactive power mode (watt-var): the reactive power of the system is controlled as a function of active power using a watt-var curve Constant reactive power mode: the system maintains a constant reactive power f. Supports active power control for temporary frequency disturbances according to a parameterized frequency-droop (freq-watt) characteristic. g. Supports bringing the net power export to zero before going off-grid (when commanded to do so by user). h. Supports interoperability and data exchange over the local communication interface using IEEE 2030.5, including: Provision of nameplate information Provision of monitoring information, and Ability to read and write function and mode setting

Feature

Description

Compliant with IEEE 1547-2018 Regulations

Constant power factor mode: the system operates at a constant power factor

Voltage-reactive power mode (volt-var): the reactive power of the system is controlled as a function of voltage using a volt-var curve

Active-reactive power mode (watt-var): the reactive power of the system is controlled as a function of active power using a watt-var curve

Constant reactive power mode: the system maintains a constant reactive power

Provision of nameplate information

Provision of monitoring information, and

Ability to read and write function and mode setting

This release is being deployed in factories to the IEEE 1547-2018 compliant IQ Gateway and IQ Combiner devices.

IQ Gateway software release notes (7.3.120)

October 25, 2022

IQ Gateway software version 07.03.120 is the next major release version with improvements in system quality and stability, reduced commissioning time, and enhanced Zigbee wireless communication.

Platforms Supported: IQ Gateway, IQ Combiner 3/3C/3-ES/3C-ES/4/4C, Envoy S Metered for North America
Geographies: USA, Mexico, Canada, Brazil
Microinverters supported: IQ8, IQ7, IQ6, M-Series, S-Series
Supported system configurations:
1. Grid-tied Solar Only system with M-Series or S-Series Microinverters, Envoy S Metered for North America
2. Grid-tied Solar Only system with IQ6-Series or IQ7-Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C
3. Grid-tied Solar Only system with IQ8-Series Microinverters, IQ Gateway, or IQ Combiner 3/3C/3-ES/3C-ES/4/4C
4. Sunlight Backup system with IQ8-Series Microinverter, IQ Gateway or IQ Combiner 4/4C, and IQ System Controller 2
5. Home Essentials Backup or Full Energy Independence system with IQ6-Series or IQ7-Series Microinverters, IQ Gateway or IQ Combiner 3/3C/3-ES/3C-ES/4/4C , IQ system Controller 1/2 and IQ Battery 3/3T/10/10T
6. Home Essentials Backup or Full Energy Independence system with IQ8-Series Microinverters, IQ Gateway or IQ Combiner 4/4C, IQ System Controller 2 and IQ Battery 3/3T/10/10T
7. Home Essentials Backup or Full Energy Independence system with M215-Series or M250-Series Microinverters, Envoy S Metered for North America, IQ System Controller 1/2, and IQ Battery 3/3T/10/10T

Note: The following features are supported only in specific configurations above: Load control, generator support, and solar circuit control i.e., PV shedding are supported in configurations 4, 5, 6 and 7. Grid Services are supported in configurations 5, 6, and 7.

Release Notes:

#	Feature	Description
1	Enhancements for system stability	a. Improves microgrid stability in rare scenarios which in the past resulted in functional validation failures or voltage and frequency oscillations when OFF Grid. b. Removes incorrect battery power display as 0 for line 2 by sending the right phase configuration to cloud. c. Improves grid transitions by increasing ride through time for OFF Grid frequency limits. d. Fixes an issue for systems with generators where microinverter power production and IQ Battery discharge levels appear to be fluctuating when the system is OFF Grid and generator is operating at less than a minimum recommended load. e. Fixes an issue where IQ Battery oscillates between charging and discharging when at the reserve State of Charge (SoC) limit. The error was due to battery SoC maintenance logic using a marginally higher reference SoC to trigger SoC maintenance. SoC maintenance is triggered at the reserve SoC limit now and avoids errors. f. Ensures microgrid is formed and is retained for up to 12 hours even if a communication loss has happened prior to a grid outage. g. Enables IQ8 + IQ Battery systems to Sunlight Jump Start and power on by toggling the DC switches on the IQ Batteries when there is a Rapid Shutdown exit at night. Prior to the release in the rare scenario when the Enphase System Shutdown Switch (the Rapid Shutdown Initiator for IQ8) was used to turn the system off, while OFF Grid, the system could only be turned back on when there was PV power, i.e., during the daytime or when the utility grid power returned. h. Fixes an issue where PV exports to grid momentarily even when the system is configured with a zero PV export limit. In prior releases, when the Power Control Systems (PCS) implementation that ensures no export to grid from battery is triggered, due to a step change in load, a momentary export to grid from PV is seen.
2	Improvements to commissioning	a. Improves software upgrade architecture. Upgrades pause when MID is open i.e., the system is OFF Grid and resume when MID is closed i.e., the system is ON Grid. b. Provides MQTT (MQ Telemetry Transport) based streaming of Power Line Communications (PLC) frequency and signal strength to cloud. This is exercised during periods when the IQ Gateway is not transmitting or receiving PLC communication. The MQTT enables the Enphase cloud to show a frequency domain view of the data post a Fast Fourier Transform (FFT). This view can be used to determine if the PLC communication in a system can be degraded or disrupted by noise in the frequency band that the IQ Gateway and microinverters use for communication. c. Improves the reliability of firmware upgrades by retrying certain missed messages. d. Improves reliability of firmware upgrades during commissioning by adding more retries to cover multiple failed attempts. e. Provides “Total bytes remaining to transfer” and “Total bytes to transfer” information via REST API to Installer app during the commissioning process, enabling installers to get a better idea of total firmware upgrade time as well as time remaining for firmware upgrade to complete. f. Avoids opening of PV and battery relays by preventing IQ System Controller update/reset during the configuration of Current Transformers (CTs). This avoids installers having to wait for relays to close to continue CT configuration and consequently reduces commissioning time. g. Reports a “DC is turned on before AC” event to cloud when the DC switch on an IQ Battery is turned on before the IQ Battery is connected to AC power. This event indicates an incorrect power on sequence was followed for the IQ Battery. IQ Batteries must be connected to AC power before their DC switches are turned on. The event is used by Enphase cloud and Enphase customer support to educate installers and help installers avoid potential IQ Battery field failures due to use of the incorrect power sequence. h. Avoids unnecessary firmware updates for configuration files by exposing the version of the configuration files and checking the same in IQ Gateway software before upgrading. i. Speeds up the inventory retrieval processes which determines the devices (IQ Batteries, IQ System Controller and components within) are actively connected to the IQ Gateway to reduce overall commissioning time.
3	Enhancements to Zigbee communication	a. Avoids IQ Gateway reboot by fixing a crash of the process handling Zigbee communication. b. Reduces homeowner facing errors for lack of communication between IQ Gateway and IQ Batteries or IQ System Controller by raising the errors only if automatic recovery of Zigbee dongle is tried and has failed. c. Adds heartbeat messaging between IQ Gateway and IQ Batteries or IQ System Controller to detect scenarios where the Zigbee radio is nonresponsive so that automatic recovery is initiated. Note that every recovery attempt shows a Zigbee communication failure event for the homeowner. This event is automatically cleared post successful recovery. d. Fixes an issue wherein multiple events of IQ Batteries or IQ System Controller losing Zigbee communication are shown to the homeowner in Enphase App. This is done by avoiding a situation wherein the IQ Gateway repeatedly floods the Zigbee network with broadcast messages which prevent communication and then lead to communication failure events. e. Adds retries to IQ Gateway software communication via USB to Zigbee dongle to avoid IQ Gateway manual reboot when a Zigbee dongle communication error occurs. f. Supports firmware updates for old and new Zigbee dongles at the same time. g. Enhances Zigbee connection recovery by incorporating an automatic Zigbee module reset on IQ Batteries and IQ System Controller. This reset triggers when the Zigbee module in these devices is stuck in an erroneous state for a long period of time after having exhausted the allowed timeout for lack of communication with Zigbee dongle connected to the IQ Gateway. h. Improves Zigbee communication recovery by avoiding an immediate network change when the Zigbee USB dongle is disconnected and reconnected on the IQ Gateway. IQ Batteries and IQ System Controller can join the same network they were on and avoid a long-term lack of communication with IQ Gateway. i. Reduces Zigbee communication losses due to potential non-volatile memory corruption issues. j. Improves microgrid resiliency to Zigbee communication loss between IQ System Controller and IQ Gateway by improving communication between IQ System Controller and IQ Batteries which enables the batteries to stay operational and keep forming a microgrid.
4	Reintroduces grid services support	a. Restores Grid Services programs that had been inadvertently disabled by an earlier software release. b. Supports new modes for battery charging and discharging which can be used via Grid Services API offered by Enphase: • Charge from grid • Charge from solar with load priority - Excess power will be used to charge battery after serving loads • Charge from solar with battery priority - Excess power after charging the battery will be used to serve the loads • Discharge to load - Battery discharges to a level which is the minimum of the setpoint received from the Grid Services API and the load seen on the site • Discharge to net load - Battery discharges to support load that exceeds the PV production amount. c. Adds the ability to set Idle mode for IQ Batteries via Grid Services API. d. Adds capability for • Back-to-Back, overlapping and nested Grid Services events • Multiple commands can be sent to IQ Gateway/Envoy S by Grid Services API and each command has a delay and a duration timer. Delay specifies the time from command receipt till the point in time when the command should be active. Duration specifies the duration of time for which the command should be active. • Discharging or charging batteries at a specific set point rather than just at rated power • Automatic move to idle state (prevent charge or discharge) once utility-set target State of Charge is reached e. Enhances system behavior to honor discharge commitments in case of partial failure of IQ Batteries in a system. For example, if one IQ Battery fails the other IQ Batteries will increase their output power as much as possible to compensate for the battery which is not functional. f. Ensures the Grid Services data persists across IQ Gateway/Envoy S reboots and system resets.
5	Enhanced interface with Enphase Cloud	a. Fixes an issue wherein any local issue in IQ Gateway software while creating a performance report (microinverter, battery and meter data along with events) resulted in the abandoning the process of sending the entire performance report to Enphase cloud. Now the performance report creation continues with readings and events that do not show issues and the resultant report is sent to Enphase cloud. b. Enables real-time alerts about grid outages for homeowners via Enphase App. IQ Gateway software sends a real time notification report to Enphase cloud containing date and time information regarding when the outage began to support this feature. c. Allows quick debugging of IQ Gateways by Enphase customer support and engineering teams. IQ Gateway software opens a tunnel in response to a MQTT (MQ Telemetry Transport) command received from Enphase cloud. Earlier, a tunnel required manual intervention at the IQ Gateway or waiting for the ping interval set on IQ Gateway so that it communicates with Enphase cloud and receives the command to open a tunnel. d. Fixes an issue wherein a system would reject an Enphase app-based command to go On Grid, incorrectly citing a lack of grid i.e., power outage. This issue was seen in a prior software release, when the Enphase App was used to command the system to go ON Grid, after having previously commanded the system to go OFF Grid. e. IQ Gateway software reports a special event for IQ Batteries which do not sense AC voltage. This event is exposed to installers and is also used by Enphase customer support to educate installers on the risk of a potential RMA due to IQ Batteries discharging down to irrecoverable State of Charge (SoC) levels while turned on and not connected to AC power. f. Provides a new REST API to update IQ Battery serial numbers into non-volatile memory as a safeguard against memory corruption causing batteries to lose their serial number. g. IQ Gateway software immediately sets reserve the State of Charge (SoC) level received from Enphase cloud on to the IQ Battery instead of waiting for the next planned write cycle. This enables all batteries to charge/discharge as required by the new reserve SoC limit, immediately eliminating delays in the system’s reaction to reserve SoC changes.
6	Improvements to system restart while in a microgrid	a. Post a microgrid collapse due to overload, the IQ Battery firmware now does at least 40 system restart retries to increase the likelihood of a successful restart. The restarts are spaced out in exponentially increasing time intervals. b. Fixes an issue wherein a false detection of a PV breaker being opened by IQ System Controller during a Sunlight Jump Start leads to repeated failures of the system restart.
7	Bug fixes and feature enhancements	a. Fixes an issue wherein IQ Battery is charging from grid to maintain the State of Charge (SoC) even when SoC is higher than reserve SoC for backup-capable sites and when above Very Low SoC (VLS) threshold for Grid Tied non-backup battery sites. As of this IQ Gateway software release IQ Battery only charges from grid when SoC is below reserve SoC for backup-capable sites and when SoC is below VLS for Grid Tied sites. b. Improves Rapid Shutdown exit behavior i.e., behavior when the Enphase Energy system is turned on using the Enphase Energy Shutdown Switch (Rapid Shutdown initiator for grid forming IQ8 microinverters). If Rapid Shutdown exit happens when grid is available, the home is immediately connected to the grid but the IQ Batteries and IQ8 PV are only connected to the home and grid after the requisite entry service time period has elapsed. If Rapid Shutdown exit happens when the grid is not available, the home is immediately powered on via IQ Batteries and IQ8 PV. However, when the grid eventually comes back, the system waits for the requisite entry service time period before closing the Microgrid Interconnect Device (MID) relay to connect the home, IQ Batteries and IQ8 PV to the grid. c. Fixes an error which resulted in an “Exception occurred during execution” error being reported on the Enphase cloud administration portal in response to battery mode or tariff changes via the SITE_SETTINGS REST task. Note this error was only visible to Enphase internal personnel and had no effect on site functionality. d. Fixes an issue where retired IQ Batteries were mistakenly unretired. e. Fixes an issue wherein IQ Batteries were not discharging after a Zigbee range extender is provisioned on the system. f. Fixes an issue wherein PV production is set to 0 after a hardware-based power export limit is enabled and then cleared via Enphase Installer Platform. g. Grid profile is propagated after a timeout even if the DER relay (s) in the IQ System Controller are not closed. This helps in propagation of special grid profiles in systems where grid voltage/frequency are out of range of normal operation. h. Fixes an issue wherein USB failure errors are not cleared due to the IQ Gateway rebooting and the error persists unnecessarily on Enphase app. i. Improves recovery of Power Line Communication (PLC) between IQ Battery controller and IQ8X-BAT microinverters by automatically detecting loss of PLC to all micros and restarting the PLC stack, which then restores communication. j. Fixes an issue wherein redundant tariff tasks are issued to the system by the Enphase cloud. k. Fixes an issue where Very Low SoC (VLS) values, that can be set between 5% and 30% by homeowners in Enphase App, were sent to the IQ Gateway but were not successfully propagated to IQ Batteries. l. Fixes an issue in systems with generator integration where, after generator trips post a Low Voltage or Low Frequency Ride Through the system does not resume a microgrid with IQ Batteries and PV. m. Fixes an issue when post IQ Battery based system restart, at or below Very Low SoC (VLS) threshold, the batteries sometimes went to a Grid Tied state incorrectly and stopped forming a microgrid. n. Fixes an issue when the system transitions to Generator Mode with a generator connected, yet the IQ Battery incorrectly shows OFF Grid instead of Generator Mode. o. Fixes an issue with IQ Battery state toggling between ON Grid to Islanding to Grid Tied when Rapid Shutdown is initiated while the system is OFF Grid. This is seen in systems with IQ System Controller 2, IQ Batteries and IQ8 PV. p. Automatic recovery of IQ Battery from internal errors is improved to handle back-to-back power transistor driver faults. q. Fixes a rare issue where IQ System Controller settings did not change to the correct Multi Mode OFF Grid settings but stayed in a Grid Tied state during Low Voltage Ride Through (LVRT) condition. r. Fixes an issue where IQ Battery is not reporting normally, and reports issues post reconnection with IQ Gateway/Envoy S. s. Enhances protection features to prevent IQ Battery power transistor failures during IQ8X-BAT firmware upgrades.

This release is being deployed in factories to the IQ Gateway and Envoy S based devices stated above and through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.4.28)

October 12, 2022

IQ Gateway software version 7.4.28 of IQ Gateway Metered supports embedded software with Microinverters, IQ Battery VDE Compliance and Enphase cell modem support on top of software version 7.4.7.

Platforms Supported: IQ Gateway Metered
Geographies: Germany and Belgium only
Micro-inverters supported: IQ7
Supported System Configurations:
1. Grid tied Solar Only System with IQ7 series Microinverters, IQ Gateway Metered
2. Grid tied Solar and Storage System, with IQ7 series Microinverters, IQ Gateway Metered, IQ Battery 3T/10T
3. Grid tied Solar and Storage System, with non-Enphase PV (SMA, Fronius, Kostal, Solar Edge, Solar Max), IQ Gateway Metered, IQ Battery 3T/10T

Release Notes:

#	Feature	Description
1	Compliant with VDE and EnFluRi Regulations	a. Supports dynamic power export limit (PEL) as per the grid definition. b. Supports active power feed-in monitoring at the grid connection and limits it below the defined active power limit curve (P_AV,E) which is agreed with the network operator. c. Support to follow the power gradients of the maximum active power (P_{A max}) to increase or decrease the active power of the power generation system. d. Introduces EnFluRi compliance requirements for Germany. The battery import or export to grid is curtailed in a fast manner as per the curve specified in the VDE-FNN Guideline for Energy Storage.
2	Enphase Cell Modems Support	The Enphase cell modems now supported by IQ Gateway Metered for plug-and-play install are a. CELLMODEM-02 b. CELLMODEM-M1-06-AT-05
3	Bug Fixes and Feature Enhancements	a. Reduces commissioning time for systems with IQ Gateway configured with default grid profile and IQ Relay opened. b. Fixes an issue of oscillations in PV production power due to phase association of microinverters not occurring during commissioning. c. Improved reliability of reporting data to the Enphase cloud following a period when the system was offline. d. Fixes a battery import from grid issue for 3-phase systems. e. Fixes an issue where system started exporting to grid even when the system configured to zero export limit and causes oscillations in PV production. f. Fixes a commissioning issue where the grid profile propagation with IQ Battery would not complete due to re-initiating the commissioning sequence for the ZigBee repeater provisioning. g. Fixes an issue where an IQ Gateway error was displayed when changing the grid profile.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.155)

September 20, 2022

IQ Gateway software version 07.00.155 comes with a fix for communication failure of the IQ Battery in the system.

Platforms Supported : IQ Gateway
Geographies : USA, Mexico, Canada
Microinverters Supported : IQ8-Series Microinverters
Supported System Configurations :
1. Sunlight Backup systems with IQ8-Series Microinverters, IQ Gateway, and IQ System Controller 2
2. Home Essentials Backup or Full Energy Independence systems with IQ8-Series Microinverters, IQ Gateway, IQ Battery 3/3T/10/10T, and IQ System Controller 2

Note: Load control (i.e. PV shedding) and generator support features are available for system configurations mentioned above.

Release Notes:

#	Feature	Description
1	Bug fixes for local Zigbee communication	Fixes an issue wherein excessive write and erase cycles caused flash corruption and resulted in unstable communication between IQ Battery, IQ System Controller 1/2 and IQ Gateway/Envoy S.

This release is being deployed through the Enphase Installer App for new systems.

IQ Gateway software release notes (7.3.78)

September 20, 2022

IQ Gateway software version 07.03.78 comes with a fix for communication failure of the IQ Battery in the system.

Platforms Supported : IQ Gateway, Envoy S Metered for North America
Geographies : USA, Mexico, Canada
Microinverters Supported : M-Series, IQ6-Series, IQ7-Series
Supported System Configurations :
1. IQ6-Series and IQ7-Series Microinverters, IQ Gateway, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T
2. M215/M250 Microinverters, Envoy S Metered for North America, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T

Note: Load control (i.e. PV shedding) and generator support features are available for system configurations mentioned above.

Release Notes:

#	Feature	Description
1	Bug fixes for local Zigbee communication	Fixes an issue wherein excessive write and erase cycles caused flash corruption and resulted in unstable communication between IQ Battery, IQ System Controller 1/2 and IQ Gateway/Envoy S.

This release is being deployed through the Enphase Installer App for new systems.

IQ Gateway software release notes (7.0.153)

September 9, 2022

IQ Gateway software version 07.00.153 supports IQ8-Series Microinverters with integrated MC4 connectors and improves the interface for enabling/disabling power production.

Platforms Supported : IQ Gateway
Geographies : USA, Mexico, Canada
Microinverters Supported : IQ8 -Series Microinverters
Supported System Configurations :
1. IQ8-Series Microinverters, IQ Gateway, and IQ System Controller 2: Grid-forming Sunlight Backup system
2. IQ8-Series Microinverters, IQ Gateway, IQ Battery 3/3T/10/10T, and IQ System Controller 2: Grid-forming Home Essentials Backup or Full Energy Independence system

Note: Load control (i.e. PV shedding) and generator support features are available for system configurations mentioned above.

#	Feature	Description
1	Bug fixes for the Enable/Disable Power Production feature in Enphase Installer Portal (formerly Enlighten Manager)	Fixes an issue where after disabling power production via the Enphase Installer Portal, the button to re-enable power production was never available. Now the button changes to a blue button with text stating “Enable Power Production” after the IQ Gateway has successfully disabled power production on the microinverters and has reported this to the Enphase cloud.
2	Support for IQ8-Series Microinverters with integrated MC4 connector	The previous modeles of IQ8-Series Microinverters had a provision for an adapter cable. The new model has an integrated MC4 connector and no adapter cable. The SKUs for the previous model had a character ‘2' in the name which is replaced by letter 'M’. e.g.; Previous model SKU ‘IQ8PLUS-72-2-US’ is named as ‘IQ8PLUS-72-M-US' for the new model. The released version of software supports IQ8-Series Microinverters with integrated MC4 connectors along with the older models as well.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.93)

September 9, 2022

IQ Gateway software version 07.00.93 supports IQ8-Series Microinverters with integrated MC4 connectors in North America and gives enhanced security to handle grid profiles.

Platforms Supported : IQ Gateway, Envoy S Metered, IQ Combiner 3/3C/3-ES/3C-ES/4/4C
Geographies : USA, Mexico, Canada and Brazil
Microinverters Supported : M-Series, S-Series, IQ6, IQ7, IQ8
Supported System Configurations :
1. M-Series/S-Series microinverters + Envoy S Metered - Grid Tied System
2. IQ6/7/8-Series Microinverters + IQ Gateway/ IQ Combiner 3/3C/3-ES/3C-ES/4/4C - Grid Tied System

Release notes:

#	Feature	Description
1	Enhanced security to handle grid profile	Brings security enhancements to handle the grid profile in the system.
2	Support for IQ8PV Microinverters with integrated MC4 connector	The previous models of IQ8-Series Microinverter had a provision for adapter cable. The new model has an integrated MC4 connector and no adapter cable. The SKUs for the previous models had a character ‘2' in the name which is replaced by letter 'M’. e.g.; Previous model SKU ‘IQ8PLUS-72-2-US’ is named as ‘IQ8PLUS-72-M-US' for the new IQ model. The released version of software supports IQ8-Series Microinverters with integrated MC4 connectors along with the older models as well.
3	Bug fixes for the Enable/Disable Power Production feature in the Enphase Installer Portal (formerly Enlighten Manager)	Fixes an issue in versions prior to 7.0.93 where after disabling power production via the Enphase Installer Portal, the button to re-enable power production was never available. The button now changes to blue with text “Enable Power Production” after the IQ Gateway has successfully disabled power production on the microinverters and has reported this to the Enphase cloud.

This release is being deployed in factories to the IQ Gateway and Envoy S based devices stated above.

IQ Gateway software release notes (7.3.76)

September 9, 2022

IQ Gateway software version 07.03.76 supports IQ System Controller improvements.

Platforms Supported : IQ Gateway, Envoy S Metered for North America
Geographies : USA, Mexico, Canada
Microinverters Supported : M-Series, IQ6-Series, IQ7-Series
Supported System Configurations :
1. IQ6-Series and IQ7-Series Microinverters, IQ Gateway, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T
2. M215/M250 Microinverters, Envoy S Metered for North America, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T

Note: Load control (i.e. PV shedding) and generator support features are available for system configurations mentioned above.

Release Notes:

#	Feature	Description
1	Bug Fixes and Feature Enhancements	Fixed a bug which results in failures to update IQ System Controller firmware due to firmware carried by the IQ Gateway having earlier timestamp

This release is being deployed through the Enphase Installer App for new systems.

IQ Gateway software release notes (7.0.88)

May 6, 2022

IQ Gateway software version 7.0.88 is a major release of IQ Gateway embedded software with improved communication performance between the devices in the system.

Platforms Supported: IQ Gateway, Envoy-S Metered, Envoy-S Standard, IQ Combiner 3/3C/3-ES/3C-ES/4/4C
Geographies: Worldwide
Microinverters Supported: M-Series, S-Series, IQ6, IQ7, IQ8
Supported System Configurations :
1. M-Series/ S-Series/ IQ6/7/8 Microinverter, IQ Gateway/ Envoy-S Metered/ Envoy-S Standard/ IQ Combiner 3/3C/3-ES/3C-ES/4/4C, IQ System Controller 1/2

Note: Load control, solar circuit i.e., PV shedding, and generator support features are available for supported system configurations mentioned above.

#	Feature	Description
1	Local Communication Performance Improvement	Brings communication performance improvement between the devices in the system.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.110)

May 5, 2022

IQ Gateway software version 7.0.110 is a major release of IQ Gateway embedded software with improved support for non-Enphase battery.

Platforms Supported : IQ Envoy
Geographies : USA, Mexico, Canada
Microinverters Supported : IQ7/IQ8
Supported System Configurations :
1. IQ7/8 Microinverter, IQ Gateway and IQ System Controller 2
2. IQ7/8 Microinverter, IQ Gateway, IQ Battery 3/3T/10/10T and IQ System Controller 2

Note: Load control, solar circuit i.e., PV shedding, and generator support features are available for system configurations mentioned above.

#	Feature	Description
1	Improved support for non-Enphase battery	Upgraded microinverter to improve supports for non-Enphase batteries.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.104)

April 28, 2022

IQ Gateway software version 7.0.104 is a major release of IQ Gateway embedded software with optimizations in battery and stability fixes.

Platforms Supported : IQ Envoy
Geographies : USA, Mexico, Canada
Microinverters Supported : IQ7, IQ8
Supported System Configurations :
1. IQ7/8 Microinverter, IQ Gateway and IQ System Controller 2
2. IQ7/8 Microinverter, IQ Gateway, IQ Battery 3/3T/10/10T and IQ System Controller 2

Note: Load control, solar circuit i.e., PV shedding, and generator support features are available for system configurations mentioned above.

#	Feature	Description
1	Improved Battery Behavior	Improves the battery behavior by propagating the SysConfig DMIR unconditionally during ESS commissioning sequence. This will eliminate unexpected off-grid operation and maloperation due to ride through features.
2	Bug Fixes and Feature Enhancements	Improves the stability of system features.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.107)

April 28, 2022

IQ Gateway software version 7.0.107 is a major release of IQ Gateway embedded software with NEC compliance improvement.

Platforms Supported : IQ Envoy
Geographies : USA, Mexico, Canada
Microinverters Supported : IQ7/IQ8
Supported System Configurations :
1. IQ7/8 Microinverter, IQ Gateway and IQ System Controller 2
2. IQ7/8 Microinverter, IQ Gateway, IQ Battery 3/3T/10/10T and IQ System Controller 2

Note: Load control, solar circuit i.e., PV shedding, and generator support features are available for system configurations mentioned above.

#	Feature	Description
1	NEC Compliance Improvement	IQ System Controller 2 firmware package included in this IQ Gateway software release meets the enter service (reconnect) time requirement defined in interconnection requirements. On rapid shutdown exit using the Enphase provided RSD switch, for a grid connected system, IQ System Controller closes the PV relays after enter service (reconnect) time elapses. The voltage and frequency criteria for synchronization is met after the enter service time elapses.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.3.75)

April 28, 2022

IQ Gateway software version 7.3.75 is the next major release version of IQ Gateway embedded software with better system stability, improved commissioning time and enhanced battery management.

Platforms Supported : IQ Envoy, Envoy S Metered for North America
Geographies : USA, Mexico, Canada
Microinverters Supported : M-Series, IQ6, IQ7
Supported System Configurations :
1. IQ6/7 Microinverters, IQ Gateway, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T
2. M215/M250 Microinverters, Envoy S Metered for North America, IQ System Controller 1/2 and IQ Battery 3/3T/10/10T

Note: Load control, solar circuit i.e., PV shedding, and generator support features are available for system configurations mentioned above.

#	Feature	Description
1	Enhanced System Stability	Improves the stability of microgrid during low power consumption, low PV production or high battery state of charge conditions.
2	Improvements in Battery Export Limiting Rules	Improves battery export rules for utility interconnection compliance and disassociates them from import rules. The system now stops battery export when meter is disabled. Earlier software releases inadvertently curtailed PV production when there was momentary export from battery. Any violations of export and import rules will only affect battery and will not inadvertently affect PV power production.
3	Improvement on Commissioning Time	Removes the delays in setup and Functional Validation (FV) completion of the system.
4	Enhanced Power Production	Enhances power production by improving the battery controller features.
5	Bug Fixes and Feature Enhancements	Improves the stability of system features.

This release is being deployed through the Enphase Installer App for new systems as well as via remote software upgrades for existing systems.

IQ Gateway software release notes (7.0.86)

December 21, 2021

IQ Gateway software version 7.0.86 introduces updated security measures, new product support and is the next major worldwide release version of IQ Gateway embedded software. To read more about how to access Envoy locally with enhanced security, visit our webpage here :

Platforms Supported: IQ Envoy, Envoy S Metered, Envoy S Standard
Geographies: Worldwide
Microinverters Supported : M-Series, S-Series, IQ6, IQ7, IQ8

#	Feature	Description
1	Support for IQ8 Series Microinverters	IQ Gateway SW 7.0 supports IQ8 microinverters in North America in grid-tied applications
2	Enhanced Security	The security infrastructure for accessing IQ Gateways using local APIs has been upgraded. The system now uses a token-based authentication mechanism to allow access for local data instead of a username/password combination. Read more about the local data access security here
3	Enphase Cellmodem Support	The new Enphase Cellmodems CELLMODEM-M1-06-SP-05 and CELLMODEM-M1-06-AT-05 are now supported by IQ Gateway for plug-and-play install
4	IQ Battery and System Controller Support	IQ Gateway SW 7.0 makes your system easy-to-upgrade to incorporate IQ Battery storage and System Controller in future
5	Reporting Enhancements for Metering Data	IQ Gateway can now increase the reporting frequency to Enphase Cloud on-demand for live debugging of the system in case of system issues. This can reduce the time to fix a potential system issue. The PV system will now support live status and live vitals with this update
6	PCS Support	IQ Gateway 7.0 supports Power Control System (PCS) to avoid main panel upgrade when oversizing M-Series/IQ6/IQ7 PV inverters in North America for installations using an IQ System Controller. You can read more about this feature here
7	Bug Fixes and Feature Enhancements	IQ Gateway SW 7.0 fixes a few bugs and improves the stability of system features in the existing IQ Gateway SW release