---
title: "A.B. Energy vs Hounen Solar - Brand Comparison | ComparePV"
description: "Compare A.B. Energy vs Hounen Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/a-b-energy-vs-hounen-solar"
---

# A.B. Energy vs Hounen Solar

Hounen Solar has the broader catalog (44 vs 0 models). Hounen Solar leans bifacial (86% of lineup).


## The two companies


| Attribute | A.B. Energy | Hounen Solar |
| --- | --- | --- |
| Country | Germany | China |
| Headquarters | Wiesbaden | Haining |
| Founded | 1996 | 2010 |
| Employees | 1,400 | 200-500 |
| Annual capacity |  | 1-2 GW/year |
| Tier 1 |  |  |
| Listed | Xetra, Frankfurt Stock Exchange: AB9 |  |
| Website | [https://abo-energy.com](https://abo-energy.com) | [https://www.hounensolar.com](https://www.hounensolar.com) |

ABO Energy is a renewable energy company that develops and constructs renewable energy projects, focusing on wind, solar, and storage facilities. They offer turnkey solutions and have connected several gigawatts of nominal output to the grid. The company is active internationally and is committed to driving the energy...

Hounen Solar (Zhejiang Haoneng Optoelectronics) is a Chinese solar PV module manufacturer with its U.S. operations branded as Hounen Solar America. The company produces solar panels for residential, commercial, and utility-scale applications, and in 2023 established a 1 GW module assembly facility in Orangeburg, South...


## Catalog & Power


| Measure | A.B. Energy | Hounen Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 0 | 44 | +44 |
| Max Power | 0 W | 725 W | +725 W |
| Avg Power | 0 W | 569 W | +569 W |


## Efficiency


| Measure | A.B. Energy | Hounen Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | - | 23.34% |  |
| Avg Efficiency | - | 21.75% |  |


## Reliability & Warranty


| Measure | A.B. Energy | Hounen Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | - | -0.325%/°C |  |
| Bifacial Share | 0 (0%) | 38 (86%) | +86 pp |
| Avg Warranty | - | 28.6 yrs |  |


## Efficiency distribution

Hounen Solar skews to higher efficiency: 7% of lineup is 23%+


| Efficiency band | A.B. Energy | Hounen Solar |
| --- | --- | --- |
| 20-21% | 0 | 7 (15.9%) |
| 21-22% | 0 | 20 (45.5%) |
| 22-23% | 0 | 14 (31.8%) |
| 23%+ | 0 | 3 (6.8%) |


## Power distribution

Hounen Solar offers more 600W+ panels (43% of lineup)


| Power band | A.B. Energy | Hounen Solar |
| --- | --- | --- |
| \<400W | 0 | 1 (2.3%) |
| 400-499W | 0 | 10 (22.7%) |
| 500-599W | 0 | 14 (31.8%) |
| 600-699W | 0 | 13 (29.5%) |
| 700W+ | 0 | 6 (13.6%) |


## Cell technology

Dominant cell tech: **N-type** (48%)


| Technology | A.B. Energy | Hounen Solar |
| --- | --- | --- |
| Unknown | 0 | 23 (52.3%) |
| N-type | 0 | 21 (47.7%) |


## Top panels, Hounen Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [HNM8-GPLDD132-725/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-725-n) | 725 | 23.3 | -0.300 | Monocrystalline |
| 2 | [HNM8-GPLDD132-720/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-720-n) | 720 | 23.2 | -0.300 | Monocrystalline |
| 3 | [HNM8-GPLDD132-715/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-715-n) | 715 | 23.0 | -0.300 | Monocrystalline |
| 4 | [HNM8-GPLDD132-710/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-710-n) | 710 | 22.9 | -0.300 | Monocrystalline |
| 5 | [HNM8-GPLDD132-705/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-705-n) | 705 | 22.7 | -0.300 | Monocrystalline |
| 6 | [HNM8-GPLDD132-700/N](https://comparepv.com/panel/hounen-solar-hnm8-gpldd132-700-n) | 700 | 22.5 | -0.300 | Monocrystalline |
| 7 | [HNM8-TPLDD132-670/M](https://comparepv.com/panel/hounen-solar-hnm8-tpldd132-670-m) | 670 | 21.6 | -0.340 | Monocrystalline |
| 8 | [HNM8-TPLDD132-665/M](https://comparepv.com/panel/hounen-solar-hnm8-tpldd132-665-m) | 665 | 21.4 | -0.340 | Monocrystalline |
| 9 | [HNM8-TPLDD132-660/M](https://comparepv.com/panel/hounen-solar-hnm8-tpldd132-660-m) | 660 | 21.2 | -0.340 | Monocrystalline |
| 10 | [HNM8-TPLDD132-655/M](https://comparepv.com/panel/hounen-solar-hnm8-tpldd132-655-m) | 655 | 21.1 | -0.340 | Monocrystalline |


## Summary

Hounen Solar is a solar module manufacturer with Chinese parent-company roots that established a 1 GW assembly and production facility in Orangeburg, South Carolina, around 2022-2023. The company has since announced plans to expand to a 3 GW facility in Summerville, South Carolina, positioning itself as one of a small number of brands offering panels assembled on US soil. This domestic footprint helps buyers avoid import tariffs and qualifies projects for certain US content incentives. No confirmed BloombergNEF Tier 1 listing was found through available sources as of mid-2026, meaning lenders and large developers may require additional due diligence before financing projects built on Hounen modules - though the brand's growing US manufacturing scale is a meaningful indicator of institutional ambition.

Hounen's current catalog spans from roughly 400 W residential rooftop modules up to 720 W utility-scale panels, with efficiency figures ranging from approximately 20% to 22.7% across the range. The confirmed cell technology is mono PERC, with bifacial variants available; the company has publicly stated plans to introduce HJT and tandem cell lines in future product cycles. The product mix makes Hounen a credible option for both residential installers and mid-scale commercial or ground-mount developers who prioritize US-content compliance over premium cell technology.

A.B. Energy, by contrast, could not be verified through any of the principal industry sources consulted - including pv-magazine, PV Tech, Solar Power World, ENF Solar, or Mercom - and no independent product reviews, capacity figures, or bankability assessments surfaced. Without verifiable data, a fair performance or value comparison against Hounen Solar cannot be made. Buyers considering A.B. Energy should request third-party test reports, warranty documentation from a financially audited entity, and references from completed installations before committing.

\---LINKS---

\- https://a1solarstore.com/blog/hounen-solar-panels-review-assembled-in-north-america.html \| Hounen Solar Panels Review 2026 - US-Assembled Panels from 400W to 720W \| review

\- https://www.solarpowerworldonline.com/2023/03/china-based-solar-panel-maker-setting-up-1-gw-factory-in-south-carolina/ \| China-based solar panel maker setting up 1 GW factory in South Carolina \| article

\- https://www.mercomindia.com/hounen-to-set-up-3-gw-solar-module-plant-in-south-carolina \| Hounen to Set Up 3 GW Solar Module Plant in South Carolina \| article

\- https://pv-magazine-usa.com/2025/09/30/hounen-solar-showcases-solar-modules-for-the-us-market/ \| Hounen Solar showcases solar modules for the US market \| article

Sources:

\- \[Hounen Solar Panels Review 2026 - US-Assembled Panels from 400W to 720W\](https://a1solarstore.com/blog/hounen-solar-panels-review-assembled-in-north-america.html)

\- \[China-based solar panel maker setting up 1-GW factory in South Carolina\](https://www.solarpowerworldonline.com/2023/03/china-based-solar-panel-maker-setting-up-1-gw-factory-in-south-carolina/)

\- \[Hounen to Set Up 3 GW Solar Module Plant in South Carolina\](https://www.mercomindia.com/hounen-to-set-up-3-gw-solar-module-plant-in-south-carolina)

\- \[Hounen Solar showcases solar modules for the US market\](https://pv-magazine-usa.com/2025/09/30/hounen-solar-showcases-solar-modules-for-the-us-market/)

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/a-b-energy-vs-hounen-solar