EG4 GridBOSS MID v3.1

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 User Manual
• EG4 GridBOSS MID v3.1 Specifications