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- FlexBOSS18: 13kW AC with PV, 18kW PV input
- GridBOSS MID v3.1: 200A service entrance
- 4 smart load ports, 125A generator input
- Whole-home backup with seamless transfer (~25 ms)
- NEMA 4X inverter, NEMA 3R GridBOSS
- 10-year warranty on both products
Ships by LTL freight. Too large for parcel delivery. Questions on freight? Call (888) 831-0450.
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Product Documents
- EG4 FlexBOSS18 Hybrid Inverter Spec Sheet (v1.0.9)
- EG4 GridBOSS MID Spec Sheet (v1.1.8)
- EG4 FlexBOSS18 Hybrid Inverter User Manual (v1.1.3)
- EG4 GridBOSS User Manual (MI-200-2P-HYB-AW-03, v2.0.7)
- EG4 FlexBOSS18 Hybrid Inverter Warranty Document
- EG4 GridBOSS Warranty Document
- EG4 FlexBOSS18 System Wiring Diagrams (v2.1)
A cost-effective whole-home control package: the FlexBOSS18 hybrid inverter, the GridBOSS MID v3.1 and the 70A breaker that ties them together. Working as one system, they provide seamless battery backup, intelligent solar sell-back, and smart management of critical and non-critical loads, in grid-tied or off-grid configurations.
Highlights
- Integrated system: inverter and microgrid interconnect designed to work together
- Backup and sell-back in one package
- Load control: smart ports, AC coupling, critical and non-critical circuits
- Simpler installs: fewer components and less wiring
What's included
- 1× EG4 FlexBOSS18 13kW hybrid inverter
- 1× EG4 GridBOSS MID v3.1 (200A service entrance)
- 1× BSB 70A AC circuit breaker
Key specs
| FlexBOSS18 max continuous output | 13kW (grid + PV) |
| FlexBOSS18 max solar input | 18kW |
| Output voltage | 120/240V |
| FlexBOSS18 THD | <5% |
| FlexBOSS18 enclosure | NEMA 4X |
| GridBOSS max grid current | 200A |
| GridBOSS supported inverters | EG4 12kPV, 18kPV, FlexBOSS18, FlexBOSS21 (up to 3) |
| GridBOSS transfer time | ~25ms |
| GridBOSS enclosure | NEMA 3R; max altitude 6,561 ft (2,000 m) |
Warranty & shipping
- EG4 warranties: FlexBOSS18 10 years, GridBOSS 10 years
- Combined weight: ~175 lbs
Batteries and solar panels are sold separately.
| Manufacturer | EG4 Electronics (bundle) |
|---|---|
| Bundle SKU | BNDL-E0021 |
| Includes | 1x EG4 FlexBOSS18 Hybrid Inverter (13kW (54A @ 240V); 10kW; 18kW (STC), 24kW max input) |
| Includes | 1x EG4 GridBOSS MID v3.1 (Microgrid Interconnect Device (MID); 200A service entrance (350A bus, software limited to 200A); 3 x 90A (12kPV, 18kPV, FlexBOSS18, FlexBOSS21)) |
| Includes | 1x BSB 70A AC Circuit Breaker |
Specifications are from the manufacturer and may change. Questions? Call (888) 831-0450.
EG4 Limited Warranty (per component): FlexBOSS18 10-year limited; GridBOSS 10-year limited
| FlexBOSS18 | 10-year limited |
|---|---|
| GridBOSS | 10-year limited |
| How to claim | contact original place of purchase (Sky Solar USA) / EG4 |
Download: EG4 FlexBOSS18 Hybrid Inverter Warranty Document
Download: EG4 GridBOSS Warranty Document
Manufacturer warranties are provided by the manufacturer. Keep your invoice as proof of purchase. Questions about a warranty claim? Call (888) 831-0450.