---
title: "Growatt MID 29.9K-HU vs Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2 - Inverter Comparison | ComparePV"
description: "Compare Growatt MID 29.9K-HU vs Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-mid-29-9k-hu/growatt-wit-28k-a-us-l2-wit-28k-au-us-l2"
updated: 2026-01-16
---

# Growatt MID 29.9K-HU vs Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2

MID 29.9K-HU leads on the differences that matter

The largest is rated ac power: 1.90 kW apart. 3 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 | [Growatt MID 29.9K-HU](https://comparepv.com/inverter/growatt-mid-29-9k-hu) | [Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2](https://comparepv.com/inverter/growatt-wit-28k-a-us-l2-wit-28k-au-us-l2) |
| Manufacturer | Growatt | Growatt |
| Rated AC power | 29.9 kW | 28 kW |
| Type | Hybrid | Hybrid |


## Where they differ

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


| Parameter | MID 29.9K-HU | WIT 28K-A-US L2 / WIT 28K-AU-US L2 | Difference |
| --- | --- | --- | --- |
| Rated AC power | 29.90 kW | 28.00 kW | 1.90 kW apart |
| Max efficiency | 98.6 % | 98.0 % | +0.6 pp for MID 29.9K-HU |
| Max AC power | 29.90 kW | 30.80 kW | 0.90 kW apart |
| Weight | 48.0 kg | 120.0 kg | -72.0 kg for MID 29.9K-HU |
| Weight per kW | 1.6 kg/kW | 4.3 kg/kW | -2.7 kg/kW for MID 29.9K-HU |
| Max AC current | 45.3 A | 85.6 A | 40.3 A apart |
| Ingress protection | IP66 | IP66/NEMA 4X | IP66 vs IP66/NEMA 4X |
| Battery voltage | 600-980 V | 380~450V | 600-980 V vs 380~450V |
| Dimensions | 570x680x256 mm | 820x1350x501 mm | 570x680x256 mm vs 820x1350x501 mm |


## Every compared parameter


| Parameter | MID 29.9K-HU | WIT 28K-A-US L2 / WIT 28K-AU-US L2 |
| --- | --- | --- |
| Rated AC power | 29.90 kW | 28.00 kW |
| Max AC power | 29.90 kW | 30.80 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | - |
| Max AC current | 45.3 A | 85.6 A |
| Max PV power | 59.80 kW | - |
| DC/AC ratio | 2.00 | - |
| Max DC voltage | 1000 V | - |
| MPPT voltage range | 200-1000 V | - |
| Start voltage | 160 V | - |
| MPP trackers | - | - |
| Strings per tracker | 2 | - |
| Max input current per tracker | 40.0 A | - |
| European efficiency | 97.2 % | - |
| Max efficiency | 98.6 % | 98.0 % |
| CEC efficiency | - | - |
| Battery input | Yes | Yes |
| Battery voltage | 600-980 V | 380~450V |
| Max charge current | 42 A | - |
| Backup power | 30.0 kW | - |
| Weight | 48.0 kg | 120.0 kg |
| Weight per kW | 1.6 kg/kW | 4.3 kg/kW |
| Dimensions | 570x680x256 mm | 820x1350x501 mm |
| Ingress protection | IP66 | IP66/NEMA 4X |
| Cooling | forced-air | - |
| Noise | 55 dB | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | - | - |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | - |
| Warranty | 5 yrs | - |


## Related comparisons

- [Growatt MID 29.9K-HU vs Deye SUN-29.9K-SG01HP3-EU-BM3](https://comparepv.com/compare-inverters/growatt-mid-29-9k-hu/deye-sun-29-9k-sg01hp3-eu-bm3) - 14 differences, the largest is max input current per tracker
- [Growatt MID 29.9K-HU vs Growatt WIT 29.9K-XHU](https://comparepv.com/compare-inverters/growatt-mid-29-9k-hu/growatt-wit-29-9k-xhu) - 9 differences, the largest is max dc voltage
- [Growatt MID 29.9K-HU vs Fronius Verto 30.0 Plus](https://comparepv.com/compare-inverters/growatt-mid-29-9k-hu/fronius-international-fronius-verto-30-0-plus) - 13 differences, the largest is european efficiency
- [Growatt WIT 28K-A-US L2 / WIT 28K-AU-US L2 vs Growatt WT 28K-H-US L2 / WT 28K-HU-US L2](https://comparepv.com/compare-inverters/growatt-wit-28k-a-us-l2-wit-28k-au-us-l2/growatt-wt-28k-h-us-l2-wt-28k-hu-us-l2) - 6 differences, the largest is max ac power


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Source: https://comparepv.com/compare-inverters/growatt-mid-29-9k-hu/growatt-wit-28k-a-us-l2-wit-28k-au-us-l2

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