Sungrow SG5.0RT Specifications & Review
The Sungrow SG5.0RT is an ultra-compact 5 kW residential string inverter from the world's largest inverter manufacturer, featuring 98.5% peak efficiency and one of the lightest form factors in its class.
What Makes the Sungrow SG5.0RT Different
The Sungrow SG5.0RT String Inverter comes from Sungrow, the world's largest inverter manufacturer by global shipment volume. The SG5.0RT delivers 5.0 kW of string inverter capacity with 98.5% peak efficiency — one of the highest efficiency ratings in its class. At just 10.5 kg, the SG series is one of the lightest inverters in its power class, enabling easy single-person installation. With 2 MPPT inputs and 600V max DC input, the SG5.0RT provides flexible array design. The 10-year warranty is backed by Sungrow's global scale.
Key Specifications
| Brand | Sungrow |
| Model | Sungrow SG5.0RT String Inverter |
| Type | String |
| Max AC Power | 5000W |
| Max DC Power | 7500W |
| Peak Efficiency | 98.5% |
| CEC Efficiency | 97.7% |
| DC Voltage Range | 80-600V |
| Max Input Voltage | 600V DC |
| Max Input Current | 16A |
| Output Voltage | 240V |
| MPPT Trackers | 2 |
| Monitoring | Sungrow iSolarCloud (WiFi/Ethernet) |
| Communication | WiFi / Ethernet / RS-485 |
| Dimensions | 370 x 315 x 145 mm |
| Weight | 10.5 kg |
| IP Rating | IP65 |
| Operating Temperature | -25C to +60C |
| Warranty | 10 years |
| Certifications | UL 1741, IEEE 1547, FCC Part 15, IEC 62109-1 |
Pros & Cons
Pros
- ✓ 98.5% peak efficiency leads the 5 kW residential string inverter class
- ✓ At 10.5 kg, it is one of the lightest 5 kW inverters available for easy single-person mounting
- ✓ Sungrow is the world's largest inverter manufacturer by shipment volume, ensuring supply chain stability
- ✓ iSolarCloud app provides comprehensive monitoring and energy analytics
Cons
- ✗ US market presence and installer support is still developing compared to domestic brands
- ✗ 10-year warranty is shorter than microinverter alternatives though extended warranties are available
Best For
Residential installations that prioritize peak efficiency and lightweight design in a proven string inverter from the global market leader
Is the Sungrow SG5.0RT Worth It?
The Sungrow SG5.0RT delivers 5.0 kW of AC output with a peak efficiency of 98.5% and a CEC weighted efficiency of 97.7%. 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 SG5.0RT 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 SG5.0RT offers a cost-effective centralized conversion solution. String inverters are well-suited for unshaded roofs with consistent panel orientation. With 2 MPPT trackers, the SG5.0RT can handle multiple roof faces or panel orientations independently, maximizing energy harvest across varying conditions.
Overall, the Sungrow SG5.0RT 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 SG5.0RT consistently achieves 97.7% 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 SG5.0RT?
System Design Tips
Size your DC array at 1.2-1.4x the 5.0 kW AC rating (6.0-7.0 kW DC) for optimal energy harvest. The 600V 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 SG5.0RT String Inverter typically costs $1500-$2250 for the inverter unit. A complete 5.0 kW grid-tied residential system typically runs $14k-$18k installed before the 30% federal ITC. After ITC: approximately $10k-$12k.
How the Sungrow SG5.0RT Compares
| Model | AC Power | Efficiency | MPPT | Warranty |
|---|---|---|---|---|
| Sungrow SG5.0RT (this inverter) | 5.0 kW | 98.5% | 2 | 10 yrs |
| SolarEdge SE5000H-US | 5.0 kW | 99% | 1 | 12 yrs |
| Fronius Primo 5.0-1 | 5.0 kW | 97% | 2 | 10 yrs |
| SMA Sunny Boy 6.0-US | 6.0 kW | 97.3% | 2 | 10 yrs |
Compare This Inverter
Installation & Compatibility
DC Input Specifications
- DC Voltage Range
- 80-600V
- Max Input Voltage
- 600V DC
- Max Input Current
- 16A
- MPPT Trackers
- 2
- Max DC Input
- 7.5 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
- 5.0 kW
- Max DC Input
- 7.5 kW
- Recommended Panels (350-400W)
- 14-21 panels
- Output Voltage
- 240V
- IP Rating
- IP65
- Operating Temperature
- -25C to +60C
- Dimensions
- 370 x 315 x 145 mm
- Weight
- 10.5 kg (23.2 lbs)
Monitoring & Communication
- - Monitoring: Sungrow iSolarCloud (WiFi/Ethernet)
- - Communication: WiFi / Ethernet / RS-485
- - Certifications: UL 1741, IEEE 1547, FCC Part 15, IEC 62109-1
Frequently Asked Questions
What solar panels are compatible with the Sungrow SG5.0RT String Inverter?
The SG5.0RT works with solar panels configured within its 80-600V MPPT voltage range and 600V 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 600V.
What is the warranty on the Sungrow SG5.0RT String Inverter?
Sungrow provides a 10-year standard warranty on the SG5.0RT. Extended warranty options may be available through Sungrow for additional cost.
Can the Sungrow SG5.0RT String Inverter work with battery storage?
The SG5.0RT 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 SG5.0RT?
The Sungrow SG5.0RT is a string rated at 5.0 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 SG5.0RT?
The CEC weighted efficiency is 97.7%, 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 SG5.0RT?
The Sungrow SG5.0RT comes with a 10-year manufacturer warranty. Extended warranty options may be available through your installer.
Is the Sungrow SG5.0RT compatible with battery storage?
The Sungrow SG5.0RT 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 SG5.0RT support?
With a maximum DC input of 7.5 kW, the Sungrow SG5.0RT can support approximately 14 to 21 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 SG5.0RT have rapid shutdown?
The Sungrow SG5.0RT 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 SG5.0RT suitable for my system size?
The Sungrow SG5.0RT is rated at 5.0 kW AC output, making it suitable for small to mid-size residential systems. The maximum DC input of 7.5 kW allows for typical DC/AC oversizing ratios of 1.1 to 1.3x, accommodating solar arrays of approximately 6.4 kW to 7.5 kW.
What monitoring options does the Sungrow SG5.0RT offer?
The Sungrow SG5.0RT includes Sungrow iSolarCloud (WiFi/Ethernet) monitoring capabilities via WiFi / Ethernet / RS-485 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