---
title: "Sungrow SG17RT vs Sungrow SG17RT-20 - Inverter Comparison | ComparePV"
description: "Compare Sungrow SG17RT vs Sungrow SG17RT-20 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/sungrow-sg17rt/sungrow-sg17rt-20"
updated: 2026-01-16
---

# Sungrow SG17RT vs Sungrow SG17RT-20

SG17RT-20 leads on the differences that matter

The largest is max ac power: 1.70 kW apart. 17 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Sungrow SG17RT](https://comparepv.com/inverter/sungrow-sg17rt) | [Sungrow SG17RT-20](https://comparepv.com/inverter/sungrow-sg17rt-20) |
| Manufacturer | Sungrow | Sungrow |
| Rated AC power | 17 kW | 17 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | SG17RT | SG17RT-20 | Difference |
| --- | --- | --- | --- |
| Max AC power | 18.70 kW | 17.00 kW | 1.70 kW apart |
| Weight | 21.0 kg | 20.0 kg | -1.0 kg for SG17RT-20 |
| Strings per tracker | 2 | 1 | 1 string apart |


## Every compared parameter


| Parameter | SG17RT | SG17RT-20 |
| --- | --- | --- |
| Rated AC power | 17.00 kW | 17.00 kW |
| Max AC power | 18.70 kW | 17.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 28.3 A | 28.3 A |
| Max PV power | 25.50 kW | - |
| DC/AC ratio | 1.50 | - |
| Max DC voltage | 1100 V | 1100 V |
| MPPT voltage range | 160-1000 V | 160-1000 V |
| Start voltage | 180 V | 180 V |
| MPP trackers | 2 | 2 |
| Strings per tracker | 2 | 1 |
| Max input current per tracker | 25.0 A | 25.0 A |
| European efficiency | 98.1 % | 98.2 % |
| Max efficiency | 98.5 % | 98.6 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 21.0 kg | 20.0 kg |
| Weight per kW | 1.2 kg/kW | 1.2 kg/kW |
| Dimensions | 480x370x195 mm | 480x370x195 mm |
| Ingress protection | IP65 | IP65 |
| Cooling | forced-air | forced-air |
| Noise | - | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | Yes | - |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | Yes |
| Warranty | - | - |


## Related comparisons

- [Sungrow SG17RT vs Growatt MID 17KTL3-X](https://comparepv.com/compare-inverters/sungrow-sg17rt/growatt-mid-17ktl3-x) - 8 differences, the largest is european efficiency
- [Sungrow SG17RT vs Huawei SUN2000-17KTL-M0](https://comparepv.com/compare-inverters/sungrow-sg17rt/huawei-sun2000-17ktl-m0) - 9 differences, the largest is max input current per tracker
- [Sungrow SG17RT vs Huawei SUN2000-17KTL-M2](https://comparepv.com/compare-inverters/sungrow-sg17rt/huawei-sun2000-17ktl-m2) - 9 differences, the largest is max input current per tracker
- [Sungrow SG17RT-20 vs SOFAR 17KTLX-G3](https://comparepv.com/compare-inverters/sungrow-sg17rt-20/sofar-solar-sofar-17ktlx-g3) - 6 differences, the largest is weight


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Source: https://comparepv.com/compare-inverters/sungrow-sg17rt/sungrow-sg17rt-20

Not in this file, on the page: a written summary generated on request.