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Front view of EG4 FlexBoss18 & GridBoss

EG4 FlexBOSS18 & GridBOSS Smart Home Energy Control Bundle {BNDL-E0021}

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$5,541.98
$5,249.97
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SKU:
BNDL-E0021

Hybrid Power Management System for Off-Grid & Grid-Tied Solutions

Take control of your energy with a smarter, simpler solar solution designed for real-world living. The EG4 FlexBOSS18 Hybrid Inverter paired with the EG4 GridBOSS Microgrid Interconnection Device creates a fully integrated system that delivers seamless battery backup, intelligent power sell-back, and effortless energy management — all working together as one cohesive, streamlined solution. By combining the powerful performance of the FlexBOSS18 with the intelligent control and simplified installation of the GridBOSS, this bundle provides a cleaner, more efficient path to home energy control. The result is a reliable, future-ready solution designed to grow with your needs — giving you the confidence, savings, and peace of mind that come with powering your home your way.

GridBoss FlexBoss18 integration and compatibility information with installation benefits.

Key Benefits:

  • Time-of-Use Optimization: Easily program the system to priortize solar/battery to power your appliances and lower grid energy consumption during peak demand hours to really help lower your monthly bill.
  • Future-Ready Expansion: The EG4 GridBOSS allows for seamless integration of up to 3 hybrid inverters so that this system can easily grow and expand along with your future energy needs.
  • Seamless Battery Backup: Internal relays of the EG4 GridBOSS combined with the high output capacity of the FlexBOSS18 mean that your home will continue to have power even if the grid is down
  • Easy Load Shedding: Have a high demand appliance? This system allows you to connect 4 different appliances or other connections and effortlessly turn them on or off to conserve power when they are not needed.

Use Cases:

Ideal for homeowners looking to achieve seamless battery backup, reduce electricity costs, and gain greater energy independence with a streamlined, all-in-one system.

Tech Specs:

EG4 FlexBOSS18

  • Max Continuous Output (Grid and PV): 13kW 
  • Input/Output Voltage: 120V/240V
  • Max Solar Input Power: 18kW
  • Weather Rating: NEMA 4X

EG4 GridBOSS V3.1

  • Supported Inverters: EG4 12kPV, 18kPV, FlexBOSS18, FlexBOSS21
  • Maximum Grid Bypass Current: 200A
  • Weather Rating: NEMA 3R
  • Max Altitude of Operation: <6561ft (2000m)

Please Note: Lifetime Customer Support is based in Texas and available via phone and email. We strongly recommend using a certified solar installer and/or master electrician for professional installation. Please note that additional components may be required for your installation.

Have questions or need assistance? Our support team is here to help! Give us a call at 903-441-2090.

Product Image Product Information
EG4 18KPV Hybrid Inverter | All-In-One Solar Inverter | 18000W PV Input | 12000W Output | 48V 120/240V Split Phase | EG4-18KPV-12LV

1x EG4 FlexBOSS18 13kW Hybrid Inverter

End Clamp for Mini Rail 30mm close up view

1x EG4 GridBOSS MID V3.1 | 200A Service Entrance

1x BSB 70A AC Circuit Breaker

 

Relevant Videos

Top 3 Scenarios You Would Need a EG4 GridBOSS

 

In this video, Ray breaks down the top three reasons you might want to install the EG4 GridBOSS in your home solar system. He walks through real-world installation scenarios, showing how the GridBOSS simplifies complex layouts, enables flexible equipment placement, and reduces costly wiring challenges. Ray also explains how the GridBOSS unlocks advanced features like smart load control, AC coupling, and managing critical vs. non-critical loads during outages. If you're considering expanding your solar setup or want more control and flexibility, this hands-on overview highlights when the GridBOSS makes the most sense — and when it might not.

EG4 FlexBOSS 18 - Is This Their Best Product Yet?

We finally got our hands on the EG4 FlexBOSS 18 — the smaller, smarter sibling of the FlexBOSS 21. And honestly? We love it. It's better suited for residential installs, offers a cheaper path for off-grid setups, and when paired with the GridBOSS, it makes hybrid installs way more affordable. If you're a homeowner looking for a solid inverter option, this might just be the sweet spot.

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