---
title: "GoodWe GW50K-ET-10 vs Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 - Inverter Comparison | ComparePV"
description: "Compare GoodWe GW50K-ET-10 vs Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/goodwe-gw50k-et-10/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2"
updated: 2026-01-16
---

# GoodWe GW50K-ET-10 vs Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2

GW50K-ET-10 leads on the differences that matter

The largest is rated ac power: 5.00 kW apart. 4 of 12 comparable parameters are identical, with 20 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [GoodWe GW50K-ET-10](https://comparepv.com/inverter/goodwe-gw50k-et-10) | [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2](https://comparepv.com/inverter/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2) |
| Manufacturer | GoodWe | Growatt |
| Rated AC power | 50 kW | 55 kW |
| Type | Hybrid | Hybrid |


## Where they differ

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


| Parameter | GW50K-ET-10 | WIT 55K-A-US L2 / WIT 55K-AU-US L2 | Difference |
| --- | --- | --- | --- |
| Rated AC power | 50.00 kW | 55.00 kW | 5.00 kW apart |
| Max AC power | 55.00 kW | 60.50 kW | 5.50 kW apart |
| Weight | 65.0 kg | 120.0 kg | -55.0 kg for GW50K-ET-10 |
| Weight per kW | 1.3 kg/kW | 2.2 kg/kW | -0.9 kg/kW for GW50K-ET-10 |
| Max AC current | 83.3 A | 168.1 A | 84.8 A apart |
| Ingress protection | IP66 | IP66/NEMA 4X | IP66 vs IP66/NEMA 4X |
| Battery voltage | 200-800 V | 380~450V | 200-800 V vs 380~450V |
| Dimensions | 660x520x260 mm | 820x1350x501 mm | 660x520x260 mm vs 820x1350x501 mm |


## Every compared parameter


| Parameter | GW50K-ET-10 | WIT 55K-A-US L2 / WIT 55K-AU-US L2 |
| --- | --- | --- |
| Rated AC power | 50.00 kW | 55.00 kW |
| Max AC power | 55.00 kW | 60.50 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 380 V | - |
| Max AC current | 83.3 A | 168.1 A |
| Max PV power | 75.00 kW | - |
| DC/AC ratio | 1.50 | - |
| Max DC voltage | 1000 V | - |
| MPPT voltage range | 165-850 V | - |
| Start voltage | 160 V | - |
| MPP trackers | - | - |
| Strings per tracker | 2 | - |
| Max input current per tracker | 42.0 A | - |
| European efficiency | 97.8 % | - |
| Max efficiency | 98.1 % | 98.0 % |
| CEC efficiency | - | - |
| Battery input | Yes | Yes |
| Battery voltage | 200-800 V | 380~450V |
| Max charge current | 100 A | - |
| Backup power | - | - |
| Weight | 65.0 kg | 120.0 kg |
| Weight per kW | 1.3 kg/kW | 2.2 kg/kW |
| Dimensions | 660x520x260 mm | 820x1350x501 mm |
| Ingress protection | IP66 | IP66/NEMA 4X |
| Cooling | forced-air | - |
| Noise | - | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | - | - |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | - |
| Warranty | - | - |


## Related comparisons

- [GoodWe GW50K-ET-10 vs Ginlong Solis S6-EH3P50K-H](https://comparepv.com/compare-inverters/goodwe-gw50k-et-10/ginlong-solis-s6-eh3p50k-h) - 14 differences, the largest is max input current per tracker
- [GoodWe GW50K-ET-10 vs Growatt MID 50K-HU](https://comparepv.com/compare-inverters/goodwe-gw50k-et-10/growatt-mid-50k-hu) - 14 differences, the largest is european efficiency
- [GoodWe GW50K-ET-10 vs Deye SUN-50K-SG01HP3-EU-BM4](https://comparepv.com/compare-inverters/goodwe-gw50k-et-10/deye-sun-50k-sg01hp3-eu-bm4) - 13 differences, the largest is european efficiency
- [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Growatt WT 55K-H-US L2 / WT 55K-HU-US L2](https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/growatt-wt-55k-h-us-l2-wt-55k-hu-us-l2) - 6 differences, the largest is max ac power
- [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Ginlong Solis S6-EH3P60K-H(21A)](https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/ginlong-solis-s6-eh3p60k-h-21a) - 9 differences, the largest is rated ac power


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Source: https://comparepv.com/compare-inverters/goodwe-gw50k-et-10/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2

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