![EG4 FlexBOSS 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input | [V1.1] Newest Version - ShopSolar: Complete Solar Kits + Lifetime Customer Support](http://shopsolarkits.com/cdn/shop/files/EG4_Flexboss.jpg?format=webp&v=1765295821&width=100)
![EG4 FlexBOSS 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input | [V1.1] Newest Version - ShopSolar: Complete Solar Kits + Lifetime Customer Support](http://shopsolarkits.com/cdn/shop/files/EG4_Flexboss.jpg?format=webp&v=1765295821&width=800)
Power your entire home with confidence using the EG4 FlexBOSS21 + GridBOSS MID V3.1 Bundle—a streamlined, high-performance solution designed for full energy independence without the hassle of main panel upgrades or subpanels.
This bundle combines the 21kW PV-capable FlexBOSS21 hybrid inverter with the next-gen GridBOSS microgrid controller, delivering reliable whole-home backup, remote monitoring, and simplified installation—all while saving you up to $7,500 in materials and labor.
Key Features & Benefits:
-
True Whole-Home Backup – Power your entire home without upgrading your main panel or using a critical load panel.
-
Massive 21kW PV Input – Run high-demand appliances, including 5-ton AC units, with support for 600V DC PV input.
-
Smart Monitoring & Control – Full remote access, system monitoring, and mobile alerts with the latest EG4 software.
-
Expandable System – Parallel up to 10 FlexBOSS21 units for up to 160kW total output.
-
Space-Saving & Simplified Setup – GridBOSS replaces breakers, transfer switches, and load centers in one compact unit.
-
200A Service Entrance – 22 kAIC main breaker for robust utility, generator, and inverter integration.
-
Hybrid-Ready – Operate off-grid, on-grid, or sell excess power back to the grid.
-
Future-Proof Design – Supports both copper and properly sized aluminum wire on select breakers.
Why Choose the EG4 FlexBOSS21 + GridBOSS Bundle?
✅ Seamless System Integration – Effortlessly connects solar, battery storage, grid, and generator inputs for a fully optimized Energy Storage System (ESS).
✅ High-Powered Performance – 16kW continuous output (PV input) with 24kW surge capacity to handle heavy loads.
✅ Smart Load Management – Automates power distribution for battery longevity and efficiency.
✅ Real-Time Remote Monitoring – Adjust settings, track performance, and receive alerts via the EG4 app or web platform.
✅ Safety & Compliance – UL-certified components with advanced protections, including rapid shutdown, arc-fault detection, and ground fault monitoring.
💡 Simplify your solar and energy storage setup today with the EG4 FlexBOSS21 & GridBOSS Bundle—power, control, and reliability in one package. 🚀
User Manual / Documents:
Power your entire home with confidence using the EG4 FlexBOSS21 + GridBOSS MID V3.1 Bundle—a streamlined, high-performance solution designed for full energy independence without the hassle of main panel upgrades or subpanels.
This bundle combines the 21kW PV-capable FlexBOSS21 hybrid inverter with the next-gen GridBOSS microgrid controller, delivering reliable whole-home backup, remote monitoring, and simplified installation—all while saving you up to $7,500 in materials and labor.
Key Features & Benefits:
-
True Whole-Home Backup – Power your entire home without upgrading your main panel or using a critical load panel.
-
Massive 21kW PV Input – Run high-demand appliances, including 5-ton AC units, with support for 600V DC PV input.
-
Smart Monitoring & Control – Full remote access, system monitoring, and mobile alerts with the latest EG4 software.
-
Expandable System – Parallel up to 10 FlexBOSS21 units for up to 160kW total output.
-
Space-Saving & Simplified Setup – GridBOSS replaces breakers, transfer switches, and load centers in one compact unit.
-
200A Service Entrance – 22 kAIC main breaker for robust utility, generator, and inverter integration.
-
Hybrid-Ready – Operate off-grid, on-grid, or sell excess power back to the grid.
-
Future-Proof Design – Supports both copper and properly sized aluminum wire on select breakers.
Why Choose the EG4 FlexBOSS21 + GridBOSS Bundle?
✅ Seamless System Integration – Effortlessly connects solar, battery storage, grid, and generator inputs for a fully optimized Energy Storage System (ESS).
✅ High-Powered Performance – 16kW continuous output (PV input) with 24kW surge capacity to handle heavy loads.
✅ Smart Load Management – Automates power distribution for battery longevity and efficiency.
✅ Real-Time Remote Monitoring – Adjust settings, track performance, and receive alerts via the EG4 app or web platform.
✅ Safety & Compliance – UL-certified components with advanced protections, including rapid shutdown, arc-fault detection, and ground fault monitoring.
💡 Simplify your solar and energy storage setup today with the EG4 FlexBOSS21 & GridBOSS Bundle—power, control, and reliability in one package. 🚀
User Manual / Documents:
EG4 FlexBOSS21 Hybrid Inverter + GridBOSS MID V3.1 Bundle | 48V Split Phase | 21kW Solar Input
- Regular price
- $5,679.02
- Sale price
- $5,679.02
- Regular price
-
$7,639.00
No obligation — get a custom quote in minutes
Lifetime Support on Every Order, Guaranteed.
![EG4 FlexBOSS 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input | [V1.1] Newest Version - ShopSolar: Complete Solar Kits + Lifetime Customer Support](http://shopsolarkits.com/cdn/shop/files/EG4_Flexboss.jpg?v=1765295821&width=800)
EG4 FlexBOSS21 Hybrid Inverter + GridBOSS MID V3.1 Bundle | 48V Split Phase | 21kW Solar Input
Testimonials
3,000+ Customer Reviews & Counting
Join the thousands of people who have already secured their energy independence.
"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
Order With Confidence
Frequently Asked Questions
Find the answers to some of the most common questions customers have before placing their order.
Yes. Our team can help you choose the right solar kit based on your goals, power needs, and location. We provide personalized guidance before and after your purchase at no additional cost.
Many of our customers complete the majority of installation themselves using our diagrams and support resources. For final electrical connections, a licensed electrician may be required depending on local codes.
While we do not directly install systems, we can help connect you with qualified local professionals and provide technical documentation to support your installer.
Our return policy is normally 30 days. If you have specific questions about returns, eligibility, or specific product conditions, you can learn more in our help center linked below.
All products are backed by full manufacturer warranties. In addition, our team provides free lifetime technical support to assist you throughout the life of your system.
Yes! We offer a variety of flexible payment plans to fit any budget. Options include monthly financing with competitive interest rates, and some plans require no money down. You can apply during checkout and get approved in minutes.
If you're ready to place your order, you can go ahead and checkout online right now. If you have questions, our friendly team of solar experts are happy to assist and can take your order over the phone. If you're interested in financing, you will find the application at checkout online. So whatever is best for you, we are happy to accommodate.
Our team works hard to process all orders within 24-48 hours. Most products ship directly to your door using the quickest, most cost effective ground shipping services depending on size. You’ll receive tracking details and delivery coordination as soon as your order ships. Our average shipping times are anywhere from 3-7 days.
You’ll have free direct access to our support team via phone, email, and chat. Whether it’s setup guidance or troubleshooting years down the road, we’re here to help.
Flexible Payment Options
Buy Now, Pay Later
We offer a wide variety of payment plan options to meet each customer's needs.
Quick & Easy Application
Fill out a short application and we'll match you with multiple payment plan options instantly.
Poor Credit or No Credit?
Don't sweat it. We welcome all credit scores and a credit score is not required for approval.
No Money Down Today
Some payment plans offer as little as no money down, if you qualify.*