Simplify your solar and backup power system with the EG4 GridBOSS MID v3.1 – a smart, all-in-one microgrid interconnect solution. Designed for seamless integration of utility, inverters, generators, and smart loads, the GridBOSS drastically reduces complexity, installation time, and equipment costs for home energy storage systems.
With a 200A service entrance rating, four smart load ports, and support for up to three hybrid inverters and a 125A generator input, this unit consolidates multiple components into one powerful hub. Whether you’re building an off-grid setup or a hybrid backup system, the GridBOSS delivers unmatched flexibility, safety, and performance—while enabling full remote monitoring via EG4's mobile platform.
Now available in two variants:
-
GridBOSS MID Only – Ideal if you already have compatible breakers.
-
GridBOSS MID + 90A Breaker Kit – Perfect for streamlining install with a ready-to-go 90A breaker included.
Note: Additional breakers for smart ports, hybrid inverters, and generator input are sold separately.
Key Features & Benefits:
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All-in-One Microgrid Interconnect – Combines up to 10 system components into one streamlined unit.
-
200A Service Entrance Rated – Supports full home power with UL-rated safety and reliability.
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Smart Load Control – 4 configurable smart ports (125A, 80A, 60A, 60A) for load prioritization and AC coupling.
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Advanced Load Management – 5 programmable drivers for intelligent energy distribution and load shedding.
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Supports Up to 3 Hybrid Inverters – Compatible with EG4 12kPV, 18kPV, FlexBOSS18, and FlexBOSS21.
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Integrated Generator Input – Handles up to 125A with auto transfer and protection.
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Remote Monitoring Ready – Wi-Fi, RS485 & CAN integration with real-time control via EG4 app.
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Outdoor Rated (NEMA 3R) – Built to handle harsh conditions (-40°F to 113°F).
-
DIY-Friendly Design – Save up to $7,500 in labor and components with simplified installation.
-
Certified & Covered – UL1741, UL67, UL916 compliant with a 10-year warranty for peace of mind.
Ideal For:
-
Off-grid & hybrid solar power systems
-
Whole home or partial home backup setups
-
Reducing installation time and cost in complex ESS configurations
Technical Specs Overview:
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Input Voltage: 120/240V AC, 60Hz
-
Service Rating: 200A | 22kAIC main breaker (CSR2200N required*)
-
Hybrid Ports: 3 (90A each)
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Generator Input: 125A max
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Smart Load Ports: 4 configurable (125A, 80A, 60A, 60A)
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Operating Temp: -40°F to 113°F
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Dimensions: 31.5" x 19.7" x 7"
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Weight: 55 lbs.
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Certifications: UL1741, UL67, UL916, FCC Part 15, CSA
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Warranty: 10 Years
User Manual / Documents:
Simplify your solar and backup power system with the EG4 GridBOSS MID v3.1 – a smart, all-in-one microgrid interconnect solution. Designed for seamless integration of utility, inverters, generators, and smart loads, the GridBOSS drastically reduces complexity, installation time, and equipment costs for home energy storage systems.
With a 200A service entrance rating, four smart load ports, and support for up to three hybrid inverters and a 125A generator input, this unit consolidates multiple components into one powerful hub. Whether you’re building an off-grid setup or a hybrid backup system, the GridBOSS delivers unmatched flexibility, safety, and performance—while enabling full remote monitoring via EG4's mobile platform.
Now available in two variants:
-
GridBOSS MID Only – Ideal if you already have compatible breakers.
-
GridBOSS MID + 90A Breaker Kit – Perfect for streamlining install with a ready-to-go 90A breaker included.
Note: Additional breakers for smart ports, hybrid inverters, and generator input are sold separately.
Key Features & Benefits:
-
All-in-One Microgrid Interconnect – Combines up to 10 system components into one streamlined unit.
-
200A Service Entrance Rated – Supports full home power with UL-rated safety and reliability.
-
Smart Load Control – 4 configurable smart ports (125A, 80A, 60A, 60A) for load prioritization and AC coupling.
-
Advanced Load Management – 5 programmable drivers for intelligent energy distribution and load shedding.
-
Supports Up to 3 Hybrid Inverters – Compatible with EG4 12kPV, 18kPV, FlexBOSS18, and FlexBOSS21.
-
Integrated Generator Input – Handles up to 125A with auto transfer and protection.
-
Remote Monitoring Ready – Wi-Fi, RS485 & CAN integration with real-time control via EG4 app.
-
Outdoor Rated (NEMA 3R) – Built to handle harsh conditions (-40°F to 113°F).
-
DIY-Friendly Design – Save up to $7,500 in labor and components with simplified installation.
-
Certified & Covered – UL1741, UL67, UL916 compliant with a 10-year warranty for peace of mind.
Ideal For:
-
Off-grid & hybrid solar power systems
-
Whole home or partial home backup setups
-
Reducing installation time and cost in complex ESS configurations
Technical Specs Overview:
-
Input Voltage: 120/240V AC, 60Hz
-
Service Rating: 200A | 22kAIC main breaker (CSR2200N required*)
-
Hybrid Ports: 3 (90A each)
-
Generator Input: 125A max
-
Smart Load Ports: 4 configurable (125A, 80A, 60A, 60A)
-
Operating Temp: -40°F to 113°F
-
Dimensions: 31.5" x 19.7" x 7"
-
Weight: 55 lbs.
-
Certifications: UL1741, UL67, UL916, FCC Part 15, CSA
-
Warranty: 10 Years
User Manual / Documents:
EG4 GridBOSS MID v3.1 | 200A Microgrid Interconnect Device | 4 Smart Ports + Gen Support | UL Certified | 10-Year Warranty
- Regular price
- $1,999.00
- Sale price
- $1,999.00
- Regular price
-
$2,849.00
No obligation — get a custom quote in minutes
Lifetime Support on Every Order, Guaranteed.
EG4 GridBOSS MID v3.1 | 200A Microgrid Interconnect Device | 4 Smart Ports + Gen Support | UL Certified | 10-Year Warranty
Testimonials
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"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!"
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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.
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