---
title: "Deye SUN-45K-G03 vs Growatt MID 40KTL3-X - Inverter Comparison | ComparePV"
description: "Compare Deye SUN-45K-G03 vs Growatt MID 40KTL3-X side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/deye-sun-45k-g03/growatt-mid-40ktl3-x"
updated: 2026-01-17
---

# Deye SUN-45K-G03 vs Growatt MID 40KTL3-X

MID 40KTL3-X leads on the differences that matter

The largest is rated ac power: 5.00 kW apart. 8 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Deye SUN-45K-G03](https://comparepv.com/inverter/deye-sun-45k-g03) | [Growatt MID 40KTL3-X](https://comparepv.com/inverter/growatt-mid-40ktl3-x) |
| Manufacturer | Deye | Growatt |
| Rated AC power | 45 kW | 40 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | SUN-45K-G03 | MID 40KTL3-X | Difference |
| --- | --- | --- | --- |
| Rated AC power | 45.00 kW | 40.00 kW | 5.00 kW apart |
| European efficiency | 98.0 % | 98.5 % | +0.5 pp for MID 40KTL3-X |
| Max DC voltage | 1000 V | 1100 V | 100 V apart |
| Max input current per tracker | 40.0 A | 26.0 A | +14.0 A for SUN-45K-G03 |
| Max AC power | 49.50 kW | 44.00 kW | 5.50 kW apart |
| Max PV power | 58.50 kW | 60.00 kW | 1.50 kW apart |
| Weight | 44.5 kg | 30.5 kg | -14.0 kg for MID 40KTL3-X |
| DC/AC ratio | 1.30 | 1.50 | +0.20 for MID 40KTL3-X |
| Max AC current | 71.7 A | 66.6 A | 5.1 A apart |
| Max operating temperature | 65 °C | 60 °C | +5 °C for SUN-45K-G03 |
| Ingress protection | IP65 | IP66 | IP65 vs IP66 |
| Weight per kW | 1.0 kg/kW | 0.8 kg/kW | -0.2 kg/kW for MID 40KTL3-X |
| MPPT voltage range | 200-850 V | 200-1000 V | 200-850 V vs 200-1000 V |
| Dimensions | 537x648x304 mm | 435x580x230 mm | 537x648x304 mm vs 435x580x230 mm |


## Every compared parameter


| Parameter | SUN-45K-G03 | MID 40KTL3-X |
| --- | --- | --- |
| Rated AC power | 45.00 kW | 40.00 kW |
| Max AC power | 49.50 kW | 44.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 71.7 A | 66.6 A |
| Max PV power | 58.50 kW | 60.00 kW |
| DC/AC ratio | 1.30 | 1.50 |
| Max DC voltage | 1000 V | 1100 V |
| MPPT voltage range | 200-850 V | 200-1000 V |
| Start voltage | 250 V | 250 V |
| MPP trackers | 4 | - |
| Strings per tracker | - | 2 |
| Max input current per tracker | 40.0 A | 26.0 A |
| European efficiency | 98.0 % | 98.5 % |
| Max efficiency | 98.7 % | 98.8 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 44.5 kg | 30.5 kg |
| Weight per kW | 1.0 kg/kW | 0.8 kg/kW |
| Dimensions | 537x648x304 mm | 435x580x230 mm |
| Ingress protection | IP65 | IP66 |
| Cooling | forced-air | forced-air |
| Noise | 45 dB | - |
| Max operating temperature | 65 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | - | Yes |
| Integrated DC switch | Yes | Yes |
| Warranty | - | 5 yrs |


## Related comparisons

- [Deye SUN-45K-G03 vs Deye SUN-45K-G-LV](https://comparepv.com/compare-inverters/deye-sun-45k-g03/deye-sun-45k-g-lv) - 9 differences, the largest is max dc voltage
- [Deye SUN-45K-G03 vs SOFAR 45KTLX-G3](https://comparepv.com/compare-inverters/deye-sun-45k-g03/sofar-solar-sofar-45ktlx-g3) - 9 differences, the largest is max dc voltage
- [Deye SUN-45K-G03 vs Huawei SUN2000-50KTL-JPM0](https://comparepv.com/compare-inverters/deye-sun-45k-g03/huawei-sun2000-50ktl-jpm0) - 15 differences, the largest is rated ac power
- [Growatt MID 40KTL3-X vs Huawei SUN2000-40KTL-M3](https://comparepv.com/compare-inverters/growatt-mid-40ktl3-x/huawei-sun2000-40ktl-m3) - 7 differences, the largest is max ac power
- [Growatt MID 40KTL3-X vs Solis-40K](https://comparepv.com/compare-inverters/growatt-mid-40ktl3-x/ginlong-solis-solis-40k) - 7 differences, the largest is max pv power
- [Growatt MID 40KTL3-X vs Sungrow SG40CX-P2](https://comparepv.com/compare-inverters/growatt-mid-40ktl3-x/sungrow-sg40cx-p2) - 10 differences, the largest is max input current per tracker


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Source: https://comparepv.com/compare-inverters/deye-sun-45k-g03/growatt-mid-40ktl3-x

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