---
title: "AKCOME vs Sonnex Energie - Brand Comparison | ComparePV"
description: "Compare AKCOME vs Sonnex Energie solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/akcome-vs-sonnex-energie"
---

# AKCOME vs Sonnex Energie

Sonnex Energie has the broader catalog (10 vs 3 models). AKCOME leads on peak efficiency at 22.54%. AKCOME leans bifacial (100% of lineup).


## The two companies


| Attribute | AKCOME | Sonnex Energie |
| --- | --- | --- |
| Country | China |  |
| Headquarters | Suzhou |  |
| Founded | 2003 |  |
| Employees |  |  |
| Annual capacity |  |  |
| Tier 1 | no | no |
| Listed |  |  |
| Website | [https://www.akcome.com](https://www.akcome.com) |  |


## Catalog & Power


| Measure | AKCOME | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Panel Models | 3 | 10 | +7 |
| Max Power | 700 W | 440 W | +260 W |
| Avg Power | 672 W | 428 W | +244 W |


## Efficiency


| Measure | AKCOME | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.54% | 22.50% | +0.04 pp |
| Avg Efficiency | 21.63% | 21.89% | +0.27 pp |


## Reliability & Warranty


| Measure | AKCOME | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.240%/°C | -0.315%/°C | +0.075 |
| Bifacial Share | 3 (100%) | 5 (50%) | +50 pp |
| Avg Warranty | 30.0 yrs | 30.0 yrs |  |


## Efficiency distribution


| Efficiency band | AKCOME | Sonnex Energie |
| --- | --- | --- |
| 21-22% | 2 (66.7%) | 5 (50.0%) |
| 22-23% | 1 (33.3%) | 5 (50.0%) |


## Power distribution

AKCOME offers more 600W+ panels (100% of lineup)


| Power band | AKCOME | Sonnex Energie |
| --- | --- | --- |
| 600-699W | 2 (66.7%) | 0 |
| 700W+ | 1 (33.3%) | 0 |
| 400-499W | 0 | 10 (100.0%) |


## Cell technology

Dominant cell tech: **HJT** (100%)

Dominant cell tech: **TOPCon** (100%)


| Technology | AKCOME | Sonnex Energie |
| --- | --- | --- |
| HJT | 3 (100.0%) | 0 |
| TOPCon | 0 | 10 (100.0%) |


## Top panels, AKCOME


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SKA611HDGDC-700W](https://comparepv.com/panel/akcome-ska611hdgdc-700w) | 700 | 22.5 | -0.240 | Monocrystalline |
| 2 | [SKA611HDGDC-660W](https://comparepv.com/panel/akcome-ska611hdgdc-660w) | 660 | 21.2 | -0.240 | Monocrystalline |
| 3 | [SKA611HDGDC-655W](https://comparepv.com/panel/akcome-ska611hdgdc-655w) | 655 | 21.1 | -0.240 | Monocrystalline |


## Top panels, Sonnex Energie


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SNX-D54HN\*\*\*-M-S (440W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-440w) | 440 | 22.5 | -0.310 | Monocrystalline |
| 2 | [SNX-D54HN\*\*\*-M-S (435W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-435w) | 435 | 22.3 | -0.310 | Monocrystalline |
| 3 | [SNX-D54HND-435M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-435m) | 435 | 22.3 | -0.320 | Monocrystalline |
| 4 | [SNX-D54HN\*\*\*-M-S (430W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-430w) | 430 | 22.0 | -0.310 | Monocrystalline |
| 5 | [SNX-D54HND-430M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-430m) | 430 | 22.0 | -0.320 | Monocrystalline |
| 6 | [SNX-D54HN\*\*\*-M-S (425W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-425w) | 425 | 21.8 | -0.310 | Monocrystalline |
| 7 | [SNX-D54HND-425M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-425m) | 425 | 21.8 | -0.320 | Monocrystalline |
| 8 | [SNX-D54HND-420M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-420m) | 420 | 21.5 | -0.320 | Monocrystalline |
| 9 | [SNX-D54HN\*\*\*-M-S (420W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-420w) | 420 | 21.5 | -0.310 | Monocrystalline |
| 10 | [SNX-D54HND-415M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-415m) | 415 | 21.2 | -0.320 | Monocrystalline |


## Summary

Sonnex Energie GmbH is a German manufacturer headquartered in Frankfurt am Main, incorporated in early 2021, making it a notably young entrant in the solar space with no confirmed public stock listing. AKCOME, by contrast, was founded in 2003 and operates out of Jiangsu Province, China, with a reported HJT production capacity of roughly 6 GW and an additional 4.6 GW expansion underway, giving it a meaningfully larger industrial footprint. Neither manufacturer currently holds BloombergNEF Tier 1 bankability status - AKCOME appeared on the list in Q4 2023 but was subsequently removed, while Sonnex has not appeared on the list at all - a consideration that matters for project finance and long-term warranty backstop credibility.

The two lineups serve quite different market segments. Sonnex builds its entire portfolio around N-type TOPCon cells, with an average output of 427.5 Wp and a peak of 440 Wp, average module efficiency of 21.9% and a high of 22.5%, and half its panels are bifacial. Its temperature coefficient of -0.315%/°C is standard for TOPCon. That profile suits premium residential rooftops and small commercial installations where physical module size and aesthetics matter. AKCOME goes all-in on HJT technology across its entire catalog, with an average output of 671.7 Wp and a ceiling of 700 Wp, average efficiency of 21.6% and a top of 22.54%, every panel bifacial, and a notably low temperature coefficient of just -0.24%/°C. That combination is squarely aimed at utility-scale ground mounts and large commercial arrays in warm climates where heat-driven losses compound quickly. Both manufacturers offer 30-year warranties.

For a typical utility or large C and I buyer in 2025, AKCOME's higher wattage, fully bifacial lineup, and superior temperature coefficient give it a clear edge in energy yield per installation. For residential buyers or those sourcing from a European supply chain, Sonnex is the more natural fit, though its very short track record remains a genuine risk factor worth weighing against both options' non-Tier-1 standing.

\---LINKS---

\- https://www.pv-magazine.com/2023/06/07/akcome-unveils-730-w-heterojunction-solar-panel/ \| Akcome unveils new 730 W heterojunction solar modules - pv magazine \| article

\- https://hjtpv.com/hjt-producers/akcome-solar-panel/ \| AKCOME Solar Panels HJT review and specs - hjtpv.com \| review

\- https://www.ecogeneration.com.au/akcome-achieves-25-6-per-cent-hjt-cell-efficiency/ \| Akcome achieves 25.6% HJT cell efficiency - Ecogeneration \| article

\- https://www.enfsolar.com/sonnex-energie \| Sonnex Energie GmbH solar panel directory profile - ENF Solar \| review

\- https://comparepv.com/reviews/akcome \| AKCOME Solar Panels Review 2026 - ComparePV \| review

Sources:

\- \[Akcome unveils 730 W heterojunction solar modules\](https://www.pv-magazine.com/2023/06/07/akcome-unveils-730-w-heterojunction-solar-panel/)

\- \[AKCOME Solar Panels HJT review\](https://hjtpv.com/hjt-producers/akcome-solar-panel/)

\- \[Akcome achieves 25.6% HJT cell efficiency\](https://www.ecogeneration.com.au/akcome-achieves-25-6-per-cent-hjt-cell-efficiency/)

\- \[Sonnex Energie GmbH - ENF Solar directory\](https://www.enfsolar.com/sonnex-energie)

\- \[AKCOME Solar Panels Review 2026 - ComparePV\](https://comparepv.com/reviews/akcome)

Written by claude-sonnet from the figures above.


## Other comparisons

- [AKCOME vs A.B. Energy](https://comparepv.com/akcome-vs-a-b-energy)
- [AE Solar vs Sonnex Energie](https://comparepv.com/ae-solar-vs-sonnex-energie)
- [AKCOME vs AEET](https://comparepv.com/akcome-vs-aeet)
- [AIKO vs Sonnex Energie](https://comparepv.com/aiko-vs-sonnex-energie)
- [AKCOME vs ARTsolar](https://comparepv.com/akcome-vs-artsolar)
- [ASM vs Sonnex Energie](https://comparepv.com/asm-vs-sonnex-energie)


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Source: https://comparepv.com/akcome-vs-sonnex-energie

Not in this file, on the page: the distributions above drawn as charts.