---
title: "Astronergy vs Suntech - Brand Comparison | ComparePV"
description: "Compare Astronergy vs Suntech solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/astronergy-vs-suntech"
---

# Astronergy vs Suntech

Suntech has the broader catalog (255 vs 150 models). Astronergy leans bifacial (69% of lineup).


## The two companies


| Attribute | Astronergy | Suntech |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Hangzhou | Wuxi |
| Founded | 2006 | 2001 |
| Employees | 12000+ |  |
| Annual capacity | 76+ GW/year |  |
| Tier 1 | yes | yes |
| Listed | Shanghai Stock Exchange: SHA: 601877 |  |
| Website | [http://www.astronergy.com/](http://www.astronergy.com/) | [https://www.suntech-power.com](https://www.suntech-power.com) |

Astronergy is a global manufacturer and supplier of solar modules, and a subsidiary of Chint Group, one of the world's leading providers of smart energy solutions. The company focuses on the R&D, production, and sales of high-efficiency crystalline silicon PV cells and PV modules. Astronergy has established...


## Catalog & Power


| Measure | Astronergy | Suntech | Margin |
| --- | --- | --- | --- |
| Panel Models | 150 | 255 | +105 |
| Max Power | 735 W | 735 W |  |
| Avg Power | 540 W | 505 W | +34 W |


## Efficiency


| Measure | Astronergy | Suntech | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.80% |  |
| Avg Efficiency | 22.71% | 21.76% | +0.95 pp |


## Reliability & Warranty


| Measure | Astronergy | Suntech | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.293%/°C | -0.316%/°C | +0.023 |
| Bifacial Share | 104 (69%) | 114 (45%) | +25 pp |
| Avg Warranty | 29.6 yrs | 28.4 yrs | +1.2 yr |


## Efficiency distribution

Astronergy skews to higher efficiency: 39% of lineup is 23%+


| Efficiency band | Astronergy | Suntech |
| --- | --- | --- |
| 20-21% | 6 (4.0%) | 61 (23.9%) |
| 21-22% | 14 (9.3%) | 64 (25.1%) |
| 22-23% | 72 (48.0%) | 70 (27.5%) |
| 23%+ | 58 (38.7%) | 49 (19.2%) |
| \<20% | 0 | 11 (4.3%) |


## Power distribution

Astronergy offers more 600W+ panels (40% of lineup)


| Power band | Astronergy | Suntech |
| --- | --- | --- |
| \<400W | 8 (5.3%) | 32 (12.5%) |
| 400-499W | 58 (38.7%) | 104 (40.8%) |
| 500-599W | 24 (16.0%) | 69 (27.1%) |
| 600-699W | 53 (35.3%) | 42 (16.5%) |
| 700W+ | 7 (4.7%) | 8 (3.1%) |


## Cell technology

Dominant cell tech: **TOPCon** (89%)

Dominant cell tech: **TOPCon** (71%)


| Technology | Astronergy | Suntech |
| --- | --- | --- |
| TOPCon | 133 (88.7%) | 180 (70.6%) |
| PERC | 12 (8.0%) | 5 (2.0%) |
| N-type | 5 (3.3%) | 5 (2.0%) |
| Unknown | 0 | 65 (25.5%) |


## Top panels, Astronergy


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [CHSM66N(DG)/F-BH-735](https://comparepv.com/panel/astronergy-chsm66n-dg-f-bh-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 2 | [CHSM66N(DG)/F-BH-730](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-730) | 730 | 23.5 | -0.290 | Monocrystalline |
| 3 | [CHSM66N(DG)/F-BH-725](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-725) | 725 | 23.3 | -0.290 | Monocrystalline |
| 4 | [CHSM66N(DG)/F-BH-720](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-720) | 720 | 23.2 | -0.290 | Monocrystalline |
| 5 | [CHSM66N(DG)/F-BH-715](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-715) | 715 | 23.0 | -0.290 | Monocrystalline |
| 6 | [CHSM66N(DG)/F-BH-710](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-710) | 710 | 22.9 | -0.290 | Monocrystalline |
| 7 | [CHSM66N(DG)/F-BH-705](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-705) | 705 | 22.7 | -0.290 | Monocrystalline |
| 8 | [CHSM66RN(DG)/F-BQ-670](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bq-670) | 670 | 24.8 | -0.260 | Monocrystalline |
| 9 | [CHSM66RN(DG)/F-BQ](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bq) | 670 | 24.8 | -0.260 | Monocrystalline |
| 10 | [CHSM66RN(DG)/F-BQ-665](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bq-665) | 665 | 24.6 | -0.260 | Monocrystalline |


## Top panels, Suntech


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [STP735S-D66-Nsh+](https://comparepv.com/panel/suntech-stp735s-d66-nsh) | 735 | 23.7 | -0.280 | Monocrystalline |
| 2 | [STP730S-D66-Nsh+](https://comparepv.com/panel/suntech-stp730s-d66-nsh) | 730 | 23.5 | -0.280 | Monocrystalline |
| 3 | [STP725S-D66-Nsh+](https://comparepv.com/panel/suntech-stp725s-d66-nsh) | 725 | 23.3 | -0.280 | Monocrystalline |
| 4 | [STP720S-D66-Nsh+](https://comparepv.com/panel/suntech-stp720s-d66-nsh) | 720 | 23.2 | -0.280 | Monocrystalline |
| 5 | [STP715S-D66-Nsh+](https://comparepv.com/panel/suntech-stp715s-d66-nsh) | 715 | 23.0 | -0.280 | Monocrystalline |
| 6 | [STP710S-D66-Nsh+](https://comparepv.com/panel/suntech-stp710s-d66-nsh) | 710 | 22.9 | -0.290 | Monocrystalline |
| 7 | [STP705S-D66-Nsh+](https://comparepv.com/panel/suntech-stp705s-d66-nsh) | 705 | 22.7 | -0.290 | Monocrystalline |
| 8 | [STP700S-D66-Nsh+](https://comparepv.com/panel/suntech-stp700s-d66-nsh) | 700 | 22.5 | -0.290 | Monocrystalline |
| 9 | [STP675S-D66/Wmh](https://comparepv.com/panel/suntech-stp675s-d66-wmh) | 675 | 21.7 | -0.340 | Monocrystalline |
| 10 | [STP670S-D66/Wmh](https://comparepv.com/panel/suntech-stp670s-d66-wmh) | 670 | 21.6 | -0.340 | Monocrystalline |


## Summary

Astronergy is a Chinese PV module manufacturer founded in 2006 and part of the CHINT Group, an energy conglomerate operating since 1984. The company holds Tier 1 status on S&P Global's Cleantech list and is recognized as a pioneer in mass-producing n-type TOPCon cells, ranking among the top four global exporters of that technology. Its annual production capacity sits in the tens of gigawatts, with cumulative global shipments having passed 150 GW, reflecting substantial scale and financial backing. Suntech, by contrast, is one of China's oldest solar brands, founded in 2001 in Wuxi by Zhengrong Shi and once listed on the NYSE, before going bankrupt in 2013 and being acquired by Shunfeng International Clean Energy; it now operates as Wuxi Suntech Power. Despite that turbulent history, Suntech retains BloombergNEF Tier 1 bankability status, though its current production scale is clearly smaller, and Astronergy's institutional footprint - reinforced by the CHINT Group - appears more robust overall.

Both manufacturers serve residential, commercial and utility-scale segments, but Astronergy leans more heavily on its TOPCon leadership, marketing high-efficiency modules (reported around 26 percent cell efficiency under its TOPCon 4.0 line) for rooftop and ground-mount installations alike. Suntech also invests in n-type TOPCon and bifacial module designs, positioning itself as a competitively priced option for residential and C&I buyers, though without the same degree of technological flagship branding that Astronergy projects.

For an international buyer prioritizing bankability, scale and a clear technology narrative, Astronergy is generally the safer default choice given its stronger group backing and TOPCon track record. Suntech remains a credible Tier 1 alternative, particularly for price-sensitive projects, but its bankruptcy history and comparatively smaller footprint warrant extra diligence on larger deployments.

Written by claude-sonnet-5 from the figures above.


## Other comparisons

- [Astronergy vs A.B. Energy](https://comparepv.com/astronergy-vs-a-b-energy)
- [AE Solar vs Suntech](https://comparepv.com/ae-solar-vs-suntech)
- [Astronergy vs AEET](https://comparepv.com/astronergy-vs-aeet)
- [AIKO vs Suntech](https://comparepv.com/aiko-vs-suntech)
- [Astronergy vs AKCOME](https://comparepv.com/astronergy-vs-akcome)
- [ARTsolar vs Suntech](https://comparepv.com/artsolar-vs-suntech)


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Source: https://comparepv.com/astronergy-vs-suntech

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