---
title: "GoodWe GW15K-SDT-CN-G40 vs Sungrow SG15KTL-M - Inverter Comparison | ComparePV"
description: "Compare GoodWe GW15K-SDT-CN-G40 vs Sungrow SG15KTL-M side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/goodwe-gw15k-sdt-cn-g40/sungrow-sg15ktl-m"
updated: 2026-01-16
---

# GoodWe GW15K-SDT-CN-G40 vs Sungrow SG15KTL-M

GW15K-SDT-CN-G40 leads on the differences that matter

The largest is max ac power: 1.50 kW apart. 9 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [GoodWe GW15K-SDT-CN-G40](https://comparepv.com/inverter/goodwe-gw15k-sdt-cn-g40) | [Sungrow SG15KTL-M](https://comparepv.com/inverter/sungrow-sg15ktl-m) |
| Manufacturer | GoodWe | Sungrow |
| Rated AC power | 15 kW | 15 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | GW15K-SDT-CN-G40 | SG15KTL-M | Difference |
| --- | --- | --- | --- |
| Max AC power | 16.50 kW | 15.00 kW | 1.50 kW apart |
| Weight | 17.0 kg | 24.0 kg | -7.0 kg for GW15K-SDT-CN-G40 |
| Max input current per tracker | 21.0 A | 22.0 A | +1.0 A for SG15KTL-M |
| Weight per kW | 1.1 kg/kW | 1.6 kg/kW | -0.5 kg/kW for GW15K-SDT-CN-G40 |
| Nominal AC voltage | 380 V | 400 V | 20 V apart |
| Start voltage | 160 V | 250 V | -90 V for GW15K-SDT-CN-G40 |
| Ingress protection | IP66 | IP65 | IP66 vs IP65 |
| Max AC current | 25.1 A | 24.0 A | 1.1 A apart |
| MPPT voltage range | 140-1000 V | 200-1000 V | 140-1000 V vs 200-1000 V |
| Dimensions | 413x530x211 mm | 485x370x210 mm | 413x530x211 mm vs 485x370x210 mm |


## Every compared parameter


| Parameter | GW15K-SDT-CN-G40 | SG15KTL-M |
| --- | --- | --- |
| Rated AC power | 15.00 kW | 15.00 kW |
| Max AC power | 16.50 kW | 15.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 380 V | 400 V |
| Max AC current | 25.1 A | 24.0 A |
| Max PV power | - | - |
| DC/AC ratio | - | - |
| Max DC voltage | 1100 V | 1100 V |
| MPPT voltage range | 140-1000 V | 200-1000 V |
| Start voltage | 160 V | 250 V |
| MPP trackers | 2 | 2 |
| Strings per tracker | 2 | 2 |
| Max input current per tracker | 21.0 A | 22.0 A |
| European efficiency | - | 98.3 % |
| Max efficiency | 98.6 % | 98.6 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 17.0 kg | 24.0 kg |
| Weight per kW | 1.1 kg/kW | 1.6 kg/kW |
| Dimensions | 413x530x211 mm | 485x370x210 mm |
| Ingress protection | IP66 | IP65 |
| Cooling | forced-air | forced-air |
| Noise | 45 dB | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | - | - |
| Ethernet | - | - |
| Arc fault protection | - | - |
| Integrated DC switch | Yes | Yes |
| Warranty | - | - |


## Related comparisons

- [GoodWe GW15K-SDT-CN-G40 vs Growatt MID 15KTL3-X](https://comparepv.com/compare-inverters/goodwe-gw15k-sdt-cn-g40/growatt-mid-15ktl3-x) - 9 differences, the largest is weight
- [GoodWe GW15K-SDT-CN-G40 vs Huawei SUN2000-15KTL-M2](https://comparepv.com/compare-inverters/goodwe-gw15k-sdt-cn-g40/huawei-sun2000-15ktl-m2) - 10 differences, the largest is weight
- [GoodWe GW15K-SDT-CN-G40 vs Huawei SUN2000-15KTL-M0](https://comparepv.com/compare-inverters/goodwe-gw15k-sdt-cn-g40/huawei-sun2000-15ktl-m0) - 10 differences, the largest is weight
- [Sungrow SG15KTL-M vs Growatt MOD 15KTL3-X](https://comparepv.com/compare-inverters/sungrow-sg15ktl-m/growatt-mod-15ktl3-x) - 9 differences, the largest is max input current per tracker


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Source: https://comparepv.com/compare-inverters/goodwe-gw15k-sdt-cn-g40/sungrow-sg15ktl-m

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