Enphase Energy Announces Complete Off-Grid Solar and Battery Solution in the U.S.

Rhea-AI Summary

Enphase Energy (NASDAQ: ENPH) on Oct 27, 2025 announced a complete off-grid solar and battery solution available in the United States today, with global rollout planned through 2026.

The solution combines IQ Battery 5P (3.84 kVA per 5 kWh, scalable to 40 kWh and 15.4 kVA), IQ8 Series microinverters with Sunlight JumpStart, IQ System Controller 3G supporting up to 15.4 kW solar and paralleling a standby AC generator, and the IQ Combiner 5C HDK with integrated 4G LTE Cat 4 modem for dual-SIM connectivity. Enphase says >100 fully off-grid sites already use its products.

Positive

• IQ Battery 5P: 3.84 kVA per 5 kWh battery
• System scalable to 40 kWh battery capacity
• System scalable to 15.4 kVA inverter power
• Support for up to 15.4 kW solar and 15.4 kVA generator
• Integrated 4G LTE Cat 4 modem with dual-SIM automatic failover
• More than 100 existing fully off-grid Enphase sites

Negative

• No US price, install cost, or distributor availability disclosed
• Off-grid rollout limited to US today; other countries pending 2026

Insights

Energy systems strategist

Enphase's announced off-grid stack broadens addressable use cases and enhances product-led resilience for homeowners.

The announcement from Enphase describes a complete off-grid configuration combining IQ8 microinverters, the IQ Battery 5P, the IQ System Controller 3G, and generator integration to run homes without a utility connection. Key technical limits are explicit: the IQ Battery 5P provides 3.84 kVA per 5 kWh; systems can scale to 40 kWh and 15.4 kVA of battery power; the controller supports up to 15.4 kW of solar and an additional 15.4 kVA from an AC generator, yielding up to 46 kVA of off-grid power. The product adds cloud connectivity options including an integrated 4G LTE Cat 4 modem with dual-SIM failover for remote monitoring and firmware updates.

This capability materially changes where and how the system can be deployed, enabling true off-grid and generator-parallel operation. Dependencies and risks are clear and operational: the rollout relies on integrated software profiles (the new “Off-Grid” profile), proper generator interconnection, and real-world performance of Sunlight JumpStart for battery recharge after full discharge. Monitor the stated sample size of "more than 100 fully off-grid sites" for performance validation and watch the planned geographic rollout beyond 2026 to assess market expansion and regulatory approvals. Near-term signals to watch include customer deployments, field reliability data, and firmware updates that enable the described behaviors.

FREMONT, Calif., Oct. 27, 2025 (GLOBE NEWSWIRE) -- Enphase Energy, Inc. (NASDAQ: ENPH), a global energy technology company and the world's leading supplier of microinverter-based solar and battery systems, today announced support for complete off-grid system configurations that are capable of operating without a utility connection when needed. The system requires the IQ^® Battery 5P with embedded grid-forming microinverters, IQ8™ Series Microinverters with Sunlight JumpStart™ capability, and a third-party standby AC generator, which all work together to power the home.

The comprehensive off-grid solution from Enphase is designed to meet the unique power needs of homeowners. For off-grid use cases, the components of the Enphase^® Energy System collaborate to power loads and charge batteries efficiently, with intelligent software optimizing generator usage when required and preventing generator damage from back-feeding power. The enhanced software also includes a new “Off-Grid” system profile that can be selected during commissioning, enabling smooth operation without the utility grid while operating alongside a generator.

With more homeowners seeking energy independence due to rising outages and grid instability, Enphase’s off-grid solution is designed to complement the utility grid by meeting today’s growing demand for reliable and resilient power. Off-grid capabilities have been integrated into several components of the Enphase Energy System, including:

• IQ8 Series Microinverters. With grid-forming capabilities, the IQ8 Series Microinverters offer Sunlight JumpStart capability. If the microgrid collapses because the batteries are fully discharged and the generator is out of fuel, Sunlight JumpStart is designed to automatically recharge the batteries and restore power the next morning.
• IQ Battery 5P. Enphase’s third-generation battery offers 3.84 kVA of power per 5 kWh of energy capacity. With Enphase Power Control, you can scale your system to 40 kWh of capacity and 15.4 kVA of power. With this power, homeowners can start large household loads, including HVAC systems and water pumps.
• IQ^® System Controller 3G. The system controller integrates an autotransformer to provide 120/240 V split-phase AC and a Generator Interconnect Device (GID) to parallel an AC standby generator with batteries and solar. Users can connect up to 15.4 kW of solar and 40 kWh of IQ Batteries, as well as draw up to 15.4 kVA from an AC standby generator, thereby providing up to 46 kVA of power while off-grid. In addition, the support for load control enables users to automatically control loads based on whether the sun is shining, the generator is connected, and adequate energy is available in the batteries.
  

Each off-grid system can now connect to the cloud through the Enphase IQ^® Combiner 5C HDK, which consolidates solar interconnection, communications, and metering within a single enclosure. For sites without reliable broadband access, the integrated 4G LTE Cat 4 Modem delivers dual-SIM connectivity with automatic failover, ensuring the system stays online for real-time monitoring, firmware updates, and remote diagnostics. Enphase also offers the modem as a standalone accessory for customers using legacy IQ^® Combiner 5™ units currently available in the channel.

“Thanks to Enphase, we can now offer our customers a complete solar and battery backup system that provides true off-grid living,” said Caleb, CEO of Haven Acres. “The microinverter-based system uses low-voltage alternating current wiring that allows us to build simple, safer systems – even with large electricity loads – and support homeowners in powering as much of their lives as possible with sunshine.”

“We’re excited to finally provide complete energy independence to our customers, with everything controlled through the Enphase App,” said Bob Evans, president of Evans Energy Systems. “Thanks to the generator integration feature, along with solar and storage, our customers can have dependable power in locations that do not have the grid or for customers that do not want the grid.”

“With the launch of our off-grid solution, we are giving homeowners a reliable path to complete energy independence,” said Nitish Mathur, SVP of customer experience at Enphase Energy. “There are already more than 100 fully off-grid sites using Enphase products today and performing reliably under real-world conditions. By combining grid-forming batteries, Sunlight JumpStart technology, and integrated generator support, the Enphase Energy System can deliver dependable power 24x7, all managed through a single app.”

The off-grid system solution from Enphase is available to customers in the United States today and is expected to roll out to additional countries throughout 2026. For more information about Enphase’s off-grid system solutions, please visit the Enphase website.

About Enphase Energy, Inc.

Enphase Energy, a global energy technology company based in Fremont, CA, is the world's leading supplier of microinverter-based solar and battery systems that enable people to harness the sun to make, use, save, and sell their own power – and control it all with a smart mobile app. The company revolutionized the solar industry with its microinverter-based technology and builds all-in-one solar, battery, and software solutions. Enphase has shipped approximately 83.1 million microinverters, and more than 4.9 million Enphase-based systems have been deployed in over 160 countries. For more information, visit https://enphase.com/.

©2025 Enphase Energy, Inc. All rights reserved. Enphase Energy, Enphase, the “e” logo, IQ, and certain other marks listed at https://enphase.com/trademark-usage-guidelines are trademarks or service marks of Enphase Energy, Inc. in the U.S. and other countries. Other names are for informational purposes and may be trademarks of their respective owners.

Forward-Looking Statements

This press release may contain forward-looking statements, including statements related to the capabilities, performance, availability, scalability, and advantages of Enphase Energy’s products and technology; and the ability of Enphase’s off-grid solutions to meet the unique power needs of homeowners. These forward-looking statements are based on Enphase Energy’s current expectations and inherently involve significant risks and uncertainties. Actual results and the timing of events could differ materially from those contemplated by these forward-looking statements as a result of such risks and uncertainties including those risks described in more detail in Enphase Energy’s most recently filed Quarterly Report on Form 10-Q, Annual Report on Form 10-K, and other documents filed by Enphase Energy from time to time with the SEC. Enphase Energy undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in its expectations, except as required by law.

Contact:

Enphase Energy
press@enphaseenergy.com

FAQ

What did Enphase (ENPH) announce on Oct 27, 2025 about off-grid systems?

Enphase announced a complete U.S. off-grid solar and battery solution combining IQ Battery 5P, IQ8 microinverters with Sunlight JumpStart, IQ System Controller 3G, and IQ Combiner 5C HDK.

How much battery capacity and power can Enphase off-grid systems scale to for ENPH customers?

Systems can scale to 40 kWh of IQ Batteries and 15.4 kVA of inverter/generator power.

What solar and generator limits does Enphase support for off-grid operation (ENPH)?

Off-grid configurations support up to 15.4 kW of solar and up to 15.4 kVA from a standby AC generator, yielding up to 46 kVA combined.

What is Sunlight JumpStart in Enphase's ENPH off-grid solution?

Sunlight JumpStart lets IQ8 microinverters automatically recharge batteries from sunlight after a full discharge so power can be restored the next morning.

Does Enphase off-grid hardware include communications for remote monitoring (ENPH)?

Yes; the IQ Combiner 5C HDK includes an integrated 4G LTE Cat 4 modem with dual-SIM failover for cloud connectivity, monitoring, and remote diagnostics.

When will Enphase off-grid solutions be available outside the U.S. (ENPH)?

Enphase said the off-grid solution is available in the U.S. today and is expected to roll out to additional countries throughout 2026.