Sungrow SG10RT Specifications & Review
The Sungrow SG10RT is a 10kW three-phase string inverter featuring dual MPPT trackers and 98.5% peak efficiency. As part of Sungrow's RT series for residential applications, it combines a compact form factor with high performance. The lightweight 18kg design is among the lightest in its class.
What Makes the Sungrow SG10RT Different
The Sungrow SG10RT Three-Phase String Inverter comes from Sungrow, the world's largest inverter manufacturer by global shipment volume. The SG10RT delivers 10.0 kW of string inverter capacity with 98.5% peak efficiency — one of the highest efficiency ratings in its class. At just 18 kg, the SG series is one of the lightest inverters in its power class, enabling easy single-person installation. With 2 MPPT inputs and 1000V max DC input, the SG10RT provides flexible array design. The 10-year warranty is backed by Sungrow's global scale.
Key Specifications
| Brand | Sungrow |
| Model | Sungrow SG10RT Three-Phase String Inverter |
| Type | String |
| Max AC Power | 10000W |
| Max DC Power | 15000W |
| Peak Efficiency | 98.5% |
| CEC Efficiency | 97.5% |
| DC Voltage Range | 160-1000V |
| Max Input Voltage | 1000V DC |
| Max Input Current | 15A |
| Output Voltage | 400V three-phase |
| MPPT Trackers | 2 |
| Monitoring | iSolarCloud App (WiFi/Ethernet) |
| Communication | WiFi, RS485, Ethernet |
| Dimensions | 490 x 380 x 200 mm |
| Weight | 18 kg |
| IP Rating | IP65 |
| Operating Temperature | -25C to +60C |
| Warranty | 10 years |
| Certifications | IEC 62109, IEC 62116, CE |
Pros & Cons
Pros
- ✓ Ultra-light 18kg design — lightest in the 10kW three-phase class
- ✓ 98.5% peak efficiency for maximum energy harvest
- ✓ Built-in WiFi and Ethernet for flexible monitoring connectivity
- ✓ IP65 rated for outdoor installation
Cons
- ✗ Three-phase only — not suitable for US split-phase residential
- ✗ No battery integration capability
- ✗ 10-year standard warranty — extensions available at cost
Best For
International residential or small commercial three-phase installations seeking lightweight, efficient conversion
Is the Sungrow SG10RT Worth It?
The Sungrow SG10RT delivers 10.0 kW of AC output with a peak efficiency of 98.5% and a CEC weighted efficiency of 97.5%. This places it above the average for string inverters (approximately 97.5%). Higher efficiency means less energy is lost during DC-to-AC conversion, translating to more usable power from your solar array over the system's lifetime.
The SG10RT includes a below-average 10-year warranty. The industry standard for string inverters is 12 to 15 years, so you may want to factor in potential replacement costs or check whether an extended warranty option is available from Sungrow or your installer.
As a string inverter, the SG10RT offers a cost-effective centralized conversion solution. String inverters are well-suited for unshaded roofs with consistent panel orientation. With 2 MPPT trackers, the SG10RT can handle multiple roof faces or panel orientations independently, maximizing energy harvest across varying conditions.
Overall, the Sungrow SG10RT can be a reasonable choice depending on your priorities and budget. Weigh its 98.5% efficiency and 10-year warranty against competing models to determine if it delivers the best value for your specific installation needs.
Real-World Performance
The SG10RT consistently achieves 97.5% CEC efficiency in field deployments. The 2 MPPT inputs handle independent string orientations. Sungrow's iSolarCloud monitoring platform provides real-time production data and analytics. The -25C to +60C range with IP65 protection ensures reliable operation in most US climates.
Who Should Buy the Sungrow SG10RT?
System Design Tips
Size your DC array at 1.2-1.4x the 10.0 kW AC rating (12.0-14.0 kW DC) for optimal energy harvest. The 1000V maximum DC input allows string lengths that should be calculated based on panel Voc and local temperature extremes. The 2 MPPT inputs allow splitting the array across different roof orientations. Mount the inverter in a well-ventilated location with adequate clearance for thermal management. The IP65 rating allows outdoor installation.
Price Estimate
The Sungrow SG10RT Three-Phase String Inverter typically costs $3000-$4500 for the inverter unit. A complete 10.0 kW grid-tied residential system typically runs $28k-$35k installed before the 30% federal ITC. After ITC: approximately $20k-$25k.
How the Sungrow SG10RT Compares
| Model | AC Power | Efficiency | MPPT | Warranty |
|---|---|---|---|---|
| Sungrow SG10RT (this inverter) | 10.0 kW | 98.5% | 2 | 10 yrs |
| SolarEdge SE10000H-US | 10.0 kW | 99% | 1 | 12 yrs |
| Fronius Primo 10.0-1 | 10.0 kW | 97.6% | 2 | 10 yrs |
| Fronius Symo 10.0-3 208 | 10.0 kW | 98% | 2 | 10 yrs |
Compare This Inverter
Installation & Compatibility
DC Input Specifications
- DC Voltage Range
- 160-1000V
- Max Input Voltage
- 1000V DC
- Max Input Current
- 15A
- MPPT Trackers
- 2
- Max DC Input
- 15.0 kW
With 2 MPPT trackers, panels can be configured in independent strings across multiple roof orientations. Always verify string sizing with your installer for your specific panel model and location.
System Sizing & Environment
- Max AC Output
- 10.0 kW
- Max DC Input
- 15.0 kW
- Recommended Panels (350-400W)
- 27-42 panels
- Output Voltage
- 400V three-phase
- IP Rating
- IP65
- Operating Temperature
- -25C to +60C
- Dimensions
- 490 x 380 x 200 mm
- Weight
- 18 kg (39.7 lbs)
Monitoring & Communication
- - Monitoring: iSolarCloud App (WiFi/Ethernet)
- - Communication: WiFi, RS485, Ethernet
- - Certifications: IEC 62109, IEC 62116, CE
Frequently Asked Questions
What solar panels are compatible with the Sungrow SG10RT Three-Phase String Inverter?
The SG10RT works with solar panels configured within its 160-1000V MPPT voltage range and 1000V maximum input voltage. Most residential and commercial panels are compatible when properly strung. Always run a string sizing calculation accounting for your coldest expected temperature to ensure Voc stays below 1000V.
What is the warranty on the Sungrow SG10RT Three-Phase String Inverter?
Sungrow provides a 10-year standard warranty on the SG10RT. Extended warranty options may be available through Sungrow for additional cost.
Can the Sungrow SG10RT Three-Phase String Inverter work with battery storage?
The SG10RT is a grid-tied string inverter without built-in battery management. To add storage, you can use an AC-coupled battery system (Tesla Powerwall, Enphase IQ Battery, etc.) or replace the inverter with a hybrid model from the same brand if available.
What type of inverter is the Sungrow SG10RT?
The Sungrow SG10RT is a string rated at 10.0 kW AC output. String inverters connect multiple panels in series and convert DC to AC at a central location.
What is the CEC efficiency of the Sungrow SG10RT?
The CEC weighted efficiency is 97.5%, with a peak efficiency of 98.5%. CEC efficiency is a more realistic measure of real-world performance than peak efficiency, as it accounts for varying power levels throughout the day.
How long is the warranty on the Sungrow SG10RT?
The Sungrow SG10RT comes with a 10-year manufacturer warranty. Extended warranty options may be available through your installer.
Is the Sungrow SG10RT compatible with battery storage?
The Sungrow SG10RT is a string inverter and does not have built-in battery management. To add battery storage, you would need either an AC-coupled battery with its own inverter (such as Tesla Powerwall) or upgrade to a hybrid inverter that supports DC-coupled batteries.
How many panels can the Sungrow SG10RT support?
With a maximum DC input of 15.0 kW, the Sungrow SG10RT can support approximately 27 to 42 standard residential solar panels (350-400W each) across 2 MPPT trackers. Actual panel count depends on individual panel wattage, string sizing, and local electrical code requirements. Always consult your installer for precise string calculations.
Does the Sungrow SG10RT have rapid shutdown?
The Sungrow SG10RT supports rapid shutdown in compliance with NEC 2017/2020 requirements. String inverters typically require additional module-level power electronics (MLPEs) such as power optimizers or rapid shutdown devices at each panel to meet the panel-level rapid shutdown mandate. Check with your installer to confirm the specific rapid shutdown solution needed for your installation.
Is the Sungrow SG10RT suitable for my system size?
The Sungrow SG10RT is rated at 10.0 kW AC output, making it suitable for standard residential systems. The maximum DC input of 15.0 kW allows for typical DC/AC oversizing ratios of 1.1 to 1.3x, accommodating solar arrays of approximately 12.8 kW to 15.0 kW.
What monitoring options does the Sungrow SG10RT offer?
The Sungrow SG10RT includes iSolarCloud App (WiFi/Ethernet) monitoring capabilities via WiFi, RS485, Ethernet communication. You can track system-level production, consumption patterns, and historical performance data. Most monitoring platforms offer web dashboards and mobile apps for real-time and historical data access. Check with Sungrow for specific app availability and any subscription requirements for advanced features.
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Last updated: February 2026