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EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter
EG4® 18kPV-12LV All-In-One Hybrid Inverter

EG4® 18kPV-12LV All-In-One Hybrid Inverter

Introducing the EG4 18kPV All-In-One Hybrid Inverter - the ultimate power solution for solar projects. With its innovative design, this inverter combines grid-tied and off-grid functionality, eliminating the need for charge controllers or transformers to create a convenient, independent, all-purpose powerhouse. This inverter meets stringent certifications, ensuring safety and performance. Power your home with up to 12,000W output, utilizing solar, battery, and grid power simultaneously. The EG4 18kPV All-In-One Hybrid Inverter also acts as a reliable backup power system during outages.

Enjoy remote monitoring, an enhanced user interface, and easy plug-and-play installation. With stackable capability and comprehensive protection, the EG4 18kPV guarantees optimal performance and safety. Choose the EG4 18kPV All-In-One Hybrid Inverter for unrivaled power and reliability in your solar project. Invest today and unlock the true potential of solar energy.


Reliability and Safety Testing


Designed, tested and optimized by EG4's Texas-based Research and Development Department


10-year warranty supported and serviced out of Texas + additional 2-year warranty added when combined with EG4 batteries.

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All-in-one energy independence solution

  • 18,000W PV input | 12,000W continuous output

  • Utilize both grid-tie and off-grid functionality simultaneously

  • Monitor everything through EG4’s user-friendly mobile app or website

  • 3 MPPTs with 600VDC max input each

  • User-friendly and configurable LCD display

  • Parallel up to 10 units for 120kWs

  • Benefit from EG4’s 10-year warranty





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EG4® 18kPV Hybrid Inverter - Firmware Changelog.pdf


EG4® 18kPV-12LV Battery Compatibility List.pdf


EG4® 18kPV AC Couple with Enphase IQ8.pdf


EG4®-18kPV External RSD Jumper Wire-White Paper.pdf




EG4®-18kPV-Quick Start Guide.pdf


EG4®-18kPV-Quick Start Guide (Spanish).pdf


EG4® 18kPV Monitor System Working Modes - Whitepaper.pdf


EG4® - 18kPV-12LV - Manufacturer's Anti-Islanding Method (Secured).pdf


EG4® 18kPV- Export Limit Utility Letter.pdf


EG4® 18kPV Gen Boost.pdf


EG4® 18kPV Hybrid Inverter - Remote Battery Update Guide.pdf


Questions & Answers

Can this unit AC Couple? How do I AC Couple this inverter?

Yes, the 18kPV can be AC coupled with up to 21.6kW of PV through an external inverter. This is especially useful when upgrading an existing system without batteries. Ensure that the feed-in inverter is UL1741SA compliant to respond correctly to grid frequency shifts and the 18kPV.

Is this inverter compatible with the EnPhase series of microinverters?

Yes, the output of a bank of EnPhase microinverters can be AC coupled to the 18kPV.

Will this charge my batteries while in standby mode like the 6500 and 6000 models?

No, “Standby” mode stops feed-in, charge, and discharge. Use “Normal” mode for auto-run status.

Why does my 18kPV only power loads when the grid is connected?

Ensure that your “Run without Grid” setting is enabled to power loads when the grid is not connected.

Will the inverter do true Zero Export?

The term ‘Zero Export’ is used throughout the industry to talk about preventing power from being exported to the grid. The reality is that Zero Export is a bit of a misnomer because no hybrid inverter currently available can achieve true zero export. All of them have a margin of error. Hybrid inverters can get it down to 100W or less. However, if there is a load on the output, this will go away

Should I do a firmware update if I am not experiencing any issues?

If there are no issues, it’s not necessary to apply a firmware update.

What is the customer code?

The customer code, issued by your distributor, is used for EG4 monitoring software setup. Contact your distributor if you haven’t received one.

Why can't I get my Wi-Fi setup?

Use the EG4 app to set up your datalogger. Ensure you enter the address without spaces. Contact your distributor for assistance if issues persist.

Can I use Solar Assistant?

Solar Assistant is not supported for the 18kPV, and it’s not recommended.

Will using Solar Assistant void the warranty on the 18kPV?

No, using Solar Assistant will not void your warranty. Testing with the 18kPV and Solar Assistant has not been conducted.

Do I need a smart meter to sell back?

Usually, the utility’s power meter measures sellback. They may replace it as part of the Net Metering agreement, often free of charge.

Are CTs necessary for me to use my system?

For grid-connected systems, EG4 recommends using the Current Transformers (CTs) that come with the system for improved monitoring and control.

Do I need CT extensions?

If CT cables are too short, they can be extended with an Ethernet cable using an RJ45 adapter, up to 300 ft (around 100 m).

How would I set up the battery settings for batteries that cannot use closed-loop communications with the inverter?

For batteries without communication capability, set the battery type as Lead Acid and adjust charge settings accordingly.

Can I use an EG4 PowerPro AllWeather battery, EG4-LL, and Lifepower4 all together with this inverter?

No, the PowerPro AllWeather battery should not be paralleled with other models of batteries.

How loud does the 18kPV get?

Fan speed is temperature-controlled and varies with load. Under light loads, the inverter is nearly silent. At max cooling, fans can reach up to 68dB @3ft.

How do I set up the dry contacts for my generator?

The inverter has a dry contact output for starting an external generator. Refer to section 3.6.2 in the installation guide for details.

Is this inverter Neutral/Ground bonded?

No, the 18kPV uses common neutral architecture and does not create an internal Neutral-ground bond. Ensure an existing bond at the service entry point.

Does the inverter have an RSD? How do I connect an RSD?

Yes, the 18kPV has an integrated RSD transmitter. Refer to documentation for details on connecting RSD receivers and initiators.

Can I limit grid and PV charging?

Yes, various settings allow you to control charging amounts and times, such as Charge Current Limit (Amps DC).

How do I use Peak Shaving?

Use the “Time of Use” settings for peak shifting. Refer to the manual (section 6.1.4 and 7) for details.

Will this inverter work without ______? (PV, grid, batteries)

The 18kPV can operate with PV, grid, or batteries separately or in different combinations depending on your needs.

Do I have to use the Wi-Fi dongle?

Internet access is not required for the 18kPV, but it’s highly recommended for easier monitoring and support. Use the provided Wi-Fi dongle or other accessories for setup.

Can I run the input to the output?

No, this could be dangerous. The 18kPV isolates the grid input during a grid-down situation to prevent back-feeding.

Can I set up both a Smart Load and Generator in an Off-Grid installation?

Yes, configure the system as a ‘Microgrid’ with the generator on the Grid input, leaving the AUX port available for configuring a Smart Load.

How does split phase work without the transformer?

The inverter generates both legs separately but 180 degrees out of phase from each other.

Is it high or low frequency?

The 18kpv is a high-frequency inverter.

What settings are available to me on the Remote Monitoring Site?

From the monitoring site, you can adjust charge, discharge, and application settings. Advanced settings are accessible through the inverter menu.

Will running the 18kPV without battery communication void the warranty?

No, but using closed-loop battery communication is recommended for better control and support.

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