---
title: "AIKO vs Tongwei - Brand Comparison | ComparePV"
description: "Compare AIKO vs Tongwei solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/aiko-vs-tongwei"
---

# AIKO vs Tongwei

AIKO has the broader catalog (144 vs 122 models). AIKO leads on peak efficiency at 25.20%. Tongwei leans bifacial (69% of lineup).


## The two companies


| Attribute | AIKO | Tongwei |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Shanghai | Chengdu |
| Founded | 2009 | 2013 |
| Employees |  |  |
| Annual capacity |  |  |
| Tier 1 | yes | yes |
| Listed | SZSE: 600732 | SSE: 600438 |
| Website | [https://www.aikosolar.com](https://www.aikosolar.com) | [https://en.tongwei.com.cn](https://en.tongwei.com.cn) |


## Catalog & Power


| Measure | AIKO | Tongwei | Margin |
| --- | --- | --- | --- |
| Panel Models | 144 | 122 | +22 |
| Max Power | 805 W | 750 W | +55 W |
| Avg Power | 581 W | 584 W | +2 W |


## Efficiency


| Measure | AIKO | Tongwei | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 25.20% | 24.20% | +1.00 pp |
| Avg Efficiency | 23.65% | 22.59% | +1.06 pp |


## Reliability & Warranty


| Measure | AIKO | Tongwei | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.271%/°C | -0.284%/°C | +0.014 |
| Bifacial Share | 35 (24%) | 84 (69%) | +45 pp |
| Avg Warranty | 29.5 yrs | 29.5 yrs | +0.0 yr |


## Efficiency distribution

AIKO skews to higher efficiency: 85% of lineup is 23%+


| Efficiency band | AIKO | Tongwei |
| --- | --- | --- |
| \<20% | 3 (2.1%) | 2 (1.6%) |
| 20-21% | 3 (2.1%) | 6 (4.9%) |
| 21-22% | 3 (2.1%) | 14 (11.5%) |
| 22-23% | 12 (8.3%) | 50 (41.0%) |
| 23%+ | 123 (85.4%) | 50 (41.0%) |


## Power distribution

AIKO offers more 600W+ panels (60% of lineup)


| Power band | AIKO | Tongwei |
| --- | --- | --- |
| \<400W | 2 (1.4%) | 0 |
| 400-499W | 50 (34.7%) | 41 (33.6%) |
| 500-599W | 5 (3.5%) | 16 (13.1%) |
| 600-699W | 78 (54.2%) | 33 (27.0%) |
| 700W+ | 9 (6.2%) | 32 (26.2%) |


## Cell technology

Dominant cell tech: **Back Contact** (83%)

Dominant cell tech: **TOPCon** (47%)


| Technology | AIKO | Tongwei |
| --- | --- | --- |
| Back Contact | 119 (82.6%) | 0 |
| N-type | 17 (11.8%) | 44 (36.1%) |
| PERC | 7 (4.9%) | 10 (8.2%) |
| Flexible | 1 (0.7%) | 0 |
| TOPCon | 0 | 57 (46.7%) |
| Unknown | 0 | 6 (4.9%) |
| HJT | 0 | 5 (4.1%) |


## Top panels, AIKO


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 | 25.1 | -0.260 | Monocrystalline |
| 2 | [AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 | 24.9 | -0.260 | Monocrystalline |
| 3 | [AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 | 24.8 | -0.260 | Monocrystalline |
| 4 | [AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 | 24.6 | -0.260 | Monocrystalline |
| 5 | [AIKO-A785-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a785-grh78dw) | 785 | 24.4 | -0.260 | Monocrystalline |
| 6 | [AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | 780 | 24.3 | -0.260 | Monocrystalline |
| 7 | [AIKO-A775-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a775-grh78dw) | 775 | 24.1 | -0.260 | Monocrystalline |
| 8 | [AIKO-A770-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a770-grh78dw) | 770 | 24.0 | -0.260 | Monocrystalline |
| 9 | [AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 | 25.0 | -0.260 | Monocrystalline |
| 10 | [AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 | 24.9 | -0.260 | Monocrystalline |


## Top panels, Tongwei


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TWMNF-66HD750](https://comparepv.com/panel/tongwei-solar-twmnf-66hd750) | 750 | 24.1 | -0.280 | Monocrystalline |
| 2 | [TWMNF-66HD745](https://comparepv.com/panel/tongwei-solar-twmnf-66hd745) | 745 | 24.0 | -0.280 | Monocrystalline |
| 3 | [TWMNF-66HD740](https://comparepv.com/panel/tongwei-solar-twmnf-66hd740) | 740 | 23.8 | -0.280 | Monocrystalline |
| 4 | [TWMHF-66HD740X](https://comparepv.com/panel/tw-solar-twmhf-66hd740x) | 740 | 23.8 | -0.240 | Monocrystalline |
| 5 | [THC G12-66 Bifacial](https://comparepv.com/panel/tongwei-thc-g12-66-bifacial) | 740 | 23.8 | -0.280 | Monocrystalline |
| 6 | [TWMNF-66HD735](https://comparepv.com/panel/tongwei-solar-twmnf-66hd735) | 735 | 23.7 | -0.280 | Monocrystalline |
| 7 | [TWMHF-66HD735X](https://comparepv.com/panel/tw-solar-twmhf-66hd735x) | 735 | 23.7 | -0.240 | Monocrystalline |
| 8 | [TWMHF-66HD730X](https://comparepv.com/panel/tw-solar-twmhf-66hd730x) | 730 | 23.5 | -0.240 | Monocrystalline |
| 9 | [TWMNF-66HD730](https://comparepv.com/panel/tongwei-solar-twmnf-66hd730) | 730 | 23.5 | -0.280 | Monocrystalline |
| 10 | [TWMNF-66HD725](https://comparepv.com/panel/tongwei-solar-twmnf-66hd725) | 725 | 23.3 | -0.280 | Monocrystalline |


## Summary

AIKO is a Chinese solar manufacturer headquartered in Foshan, Guangdong, founded in 2009 and listed on BloombergNEF's Tier 1 module manufacturers list since 2024. The company has pursued a deliberately differentiated technology path, staking its identity on all-back-contact (ABC) cell architecture rather than the mainstream TOPCon route. AIKO planned BC module shipments exceeding 20 GW for 2025 and has a manufacturing complex designed for up to 30 GW of total cell and module capacity. Tongwei is a substantially older and larger enterprise, founded in 1982, headquartered in Chengdu and part of a diversified agribusiness-to-energy conglomerate that reached Fortune Global 500 status. Tongwei Solar entered Q1 2025 with roughly 85 GW of module capacity and has maintained BloombergNEF Tier 1 status through multiple consecutive quarters, with cumulative module shipments surpassing the 100 GW milestone. On institutional footprint - balance-sheet scale, financing track record, and supply-chain depth - Tongwei holds a clear advantage.

AIKO's flagship Neostar series targets premium residential and commercial rooftops, where its ABC back-contact design delivers panel efficiencies confirmed at up to 24.3%, among the highest available in that segment, and earns it recognition such as the 2025 SolarQuotes Installers' Choice award in Australia. Its Stellar series addresses utility-scale ground mounts with large-format bifacial modules. Tongwei's product mix tilts heavily toward utility and large commercial applications, with its G12R and TNC 3.0 TOPCon lines offering modules above 625 W and efficiencies around 23-24.8%; the company was also named a Top Performer in the Kiwa PVEL 2025 PV Module Reliability Scorecard, reinforcing its appeal for bankable, large-scale projects.

For a buyer prioritizing absolute efficiency on constrained rooftop space and willing to pay a premium, AIKO's ABC technology is a compelling choice with proven installer support in markets like Australia and the UK. For utility developers, large EPCs, or procurement teams requiring deep supply-chain redundancy and a long bankability track record, Tongwei's scale and institutional standing make it a safer default. The two brands are not interchangeable - they occupy meaningfully different efficiency and scale niches - though both carry credible Tier 1 status.

\---LINKS---

\- https://www.pv-tech.org/aiko-capacity-upgrades-abc-cell-technology/ \| Aiko steps up ABC transition with 11GW capacity upgrade \| article

\- https://www.pv-magazine.com/2025/02/07/aiko-launches-new-rooftop-solar-panels-with-24-3-efficiency/ \| Aiko launches new rooftop solar panels with 24.3% efficiency \| article

\- https://www.pvtime.org/tongwei-solar-earns-bloombergnef-tier-1-module-manufacturer-status-in-q1-2025/ \| Tongwei Solar Earns BloombergNEF Tier 1 Status in Q1 2025 - PVTIME \| article

\- https://www.pv-tech.org/tongwei-solar-the-first-vertically-integrated-leading-global-module-supplier-in-2025/ \| Tongwei Solar - first vertically-integrated leading global module supplier 2025 \| article

\- https://scorecard.pvel.com/manufacturer\_name/tongwei-solar/ \| Tongwei Solar - Kiwa PVEL 2025 PV Module Reliability Scorecard \| review

Sources:

\- \[AIKO Tier 1 BloombergNEF status\](https://aikosolar.com/en/aiko-achieves-prestigious-tier1-status/)

\- \[Aiko steps up ABC transition - PV Tech\](https://www.pv-tech.org/aiko-capacity-upgrades-abc-cell-technology/)

\- \[Aiko launches 24.3% efficiency rooftop panels - PV Magazine\](https://www.pv-magazine.com/2025/02/07/aiko-launches-new-rooftop-solar-panels-with-24-3-efficiency/)

\- \[Tongwei Solar Earns BloombergNEF Tier 1 Q1 2025 - PVTIME\](https://www.pvtime.org/tongwei-solar-earns-bloombergnef-tier-1-module-manufacturer-status-in-q1-2025/)

\- \[Tongwei vertically integrated global supplier 2025 - PV Tech\](https://www.pv-tech.org/tongwei-solar-the-first-vertically-integrated-leading-global-module-supplier-in-2025/)

\- \[Tongwei PVEL 2025 Reliability Scorecard\](https://scorecard.pvel.com/manufacturer\_name/tongwei-solar/)

Written by claude-sonnet from the figures above.


## Other comparisons

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


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Source: https://comparepv.com/aiko-vs-tongwei

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