EG4 Electronics offers hybrid inverters designed to meet the needs of modern energy systems. The FlexBOSS21 Hybrid Inverter builds on the solid foundation of the 18kPV, providing increased capacity, improved performance, and added versatility. To complement the modern landscape of electrical code, the FlexBOSS21 splits some of the useful inputs with the GridBOSS Microgrid Interconnect Device, such as generator and a 200A bypass. Let’s take an in-depth look at both products to help you decide which model is right for you.
Key Performance Differences
| Feature | FlexBOSS21 | 18kPV |
| Usable Solar PV Capacity | 21 kW | 18 kW |
| Output to Grid/Load | Up to 16 kW (66.7A) | 12 kW (50A) |
| MPPT Current Ratings | 26A / 26A / 15A | 25A / 15A / 15A |
| Design | 30.4×22.3×11.2 in., 110 lbs. | 34.3×20.5×11.2 in., 121 lbs. |
The FlexBOSS21 is better suited for larger installations or systems requiring higher energy production, thanks to its increased capacity and output.
Efficiency and Reliability
Firmware updates in the FlexBOSS21 improve:
- Energy flow optimization for better performance.
- Fault detection and recovery for greater reliability.
- User and installer experience with advanced monitoring and easier settings adjustments.
Both the FlexBOSS21 and 18kPV integrate with EG4’s GridBOSS, expanding the functionality on a 200A service. GridBOSS allows for up to three inverters, each delivering up to 90 amps, making it ideal for residential and commercial configurations.
Lower Installation Costs
The FlexBOSS21 offers potential cost savings by:
- Reducing or eliminating the need for main panel upgrades or critical load subpanels.
- Saving between $3,000 and $7,500 compared to traditional setups like the 18kPV.
Choosing the Right Model
- FlexBOSS21: Best for higher energy demands, larger systems, or those looking to minimize installation costs.
- 18kPV: A solid choice for moderate energy needs or systems already aligned with its specifications.
Both models are reliable, compatible with EG4’s GridBOSS, and suitable for a range of energy requirements. For more details, take a look at our white paper about the GridBOSS and FlexBOSS21 or contact us on our website.
