We are here to compare the specification data of the most popular brands of solar and battery inverters used for off-grid installations. This task can be complex due to the number of features that are important for different applications. For instance, Victron offers a variety of devices that are favoured by off-grid solar DIY enthusiasts, and their systems can integrate numerous devices which can be extremely helpful for upgrading or building systems of any size and for any location. Selectronic stands out with its enormous surge capacity, which is crucial for off-grid operations where large, old motors are in use. Deye offers inverters that are not only durable but also feature simple installation processes, making them very practical for dealing with 48V systems and flexible upgrades. Sigenergy is the absolute champion in terms of ease of installation; it can be scaled to large systems and represents a new generation of solar battery technology.

Key Specifications Comparison

1. Sigen Hybrid Inverter (Sigenergy)
   • Power Range: 3.0 kW to 25.0 kW (Single Phase and Three Phase)
   • Protection Rating: IP66
   • MPP Trackers: Up to 4
   • DC/AC Ratio: Up to 2
   • Features:
     • DC ground-fault protection
     • Multi-source black start capability
     • On & off-grid compatibility
     • EMS for precise control and multi-system support in parallel connection
     • Easy integration with additional modules for EV charging and solar energy storage
     • Quick and easy installation with robust safety features​​.
       • IIII
2. Victron SmartSolar MPPT RS & MultiPlus-II Inverter/Charger
   • SmartSolar MPPT RS
     • Charge Controller Power: 5.76 kW & 11.52 kW
     • Maximum DC PV Voltage: 450 V
     • Output Current: 100 A or 200 A
     • MPPT Trackers: Multiple independent
     • Efficiency: Up to 96%
     • Features: Ultra-fast MPPT, Bluetooth connectivity, galvanic isolation​​.
   • MultiPlus-II Inverter/Charger
     • Power Range: 3 kW to 15 kW
     • AC Input Current: Up to 100 A
     • DC Input Voltage: 38-66 V for 48V model
     • Efficiency: Up to 96%
     • Features: Parallel and three-phase operation, remote system configuring and monitoring​​.
   • System Integration: These devices are designed to work together, enhancing system efficiency and flexibility. The SmartSolar optimizes solar energy capture which is managed by the MultiPlus-II for efficient energy storage and conversion.
   • IIII
3. Selectronic SP PRO SPMC482-AU
   • Continuous Power: 7.5 kW
   • Battery Voltages Supported: 48V
   • Protection: IP43 (not ideal for very harsh environmental conditions)
   • Features: On-grid and off-grid operation, configurable for various battery types, inbuilt generator controller​​.
   • Additional Requirements: Requires third-party inverter or charge controller to connect solar panels, offering flexibility in solar solution configuration.
   • IIII
4. Deye Hybrid Inverter
   • Power Range: 3.6 kW to 8 kW
   • MPP Trackers: 2
   • IP65
   • Features: Self-consumption optimization, compatible with mains voltage or generator power, supports Wi-Fi monitoring​​.

Comparison Summary

• Power Range and Flexibility: Sigenergy offers the broadest power range with significant flexibility through its modular and scalable system, suitable for varying residential and small commercial setups. Selectronic and Victron offer solutions for medium to large-scale installations with robust off-grid capabilities.
• Protection and Durability: Sigen and Deye exhibit high IP ratings, making them suitable for harsh environments. Selectronic’s IP43 rating, while suitable for various applications, may not be ideal for very harsh environmental conditions.
• Features for System Control and Integration: Victron’s devices work in synergy for optimized energy management. Sigenergy stands out with its comprehensive home energy solution that integrates solar inverter functionality, battery management, and EV charging into one system, facilitating simple, smart, and efficient energy management.
• Efficiency and Energy Management: All systems focus on high efficiency and smart energy management. Victron and Sigenergy particularly emphasize advanced grid interaction and the capability to dynamically adjust system operations based on real-time conditions and energy demands.