---
title: "Trina Solar vs WINAICO - Brand Comparison | ComparePV"
description: "Compare Trina Solar vs WINAICO solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/trina-solar-vs-winaico"
image: "https://comparepv.com/og/compare/manufacturers/trina-solar/winaico.png"
---

# Trina Solar vs WINAICO

Trina Solar has the broader catalog (340 vs 44 models). WINAICO leads on peak efficiency at 25.00%. WINAICO leans bifacial (77% of lineup).


## The two companies


| Attribute | Trina Solar | WINAICO |
| --- | --- | --- |
| Country | China | Taiwan |
| Headquarters | Changzhou | Hsinchu |
| Founded | 1997 | 2003 |
| Employees |  | 100-500 |
| Annual capacity |  | 0.1-1 GW/year |
| Tier 1 | yes | yes |
| Listed |  |  |
| Website | [https://www.trinasolar.com](https://www.trinasolar.com) | [https://winaico.com](https://winaico.com) |

WINAICO is a Taiwanese manufacturer of high-performance crystalline silicon photovoltaic modules, operating as an independent subsidiary of Win Win Precision Technology. The company focuses on premium-quality solar panels backed by long warranty periods and has built a strong reputation in markets such as Germany...


## Catalog & Power


| Measure | Trina Solar | WINAICO | Margin |
| --- | --- | --- | --- |
| Panel Models | 340 | 44 | +296 |
| Max Power | 760 W | 675 W | +85 W |
| Avg Power | 520 W | 491 W | +30 W |


## Efficiency


| Measure | Trina Solar | WINAICO | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 25.00% | +0.20 pp |
| Avg Efficiency | 21.71% | 22.99% | +1.27 pp |


## Reliability & Warranty


| Measure | Trina Solar | WINAICO | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.302%/°C | -0.284%/°C | +0.018 |
| Bifacial Share | 145 (43%) | 34 (77%) | +35 pp |
| Avg Warranty | 28.2 yrs | 28.9 yrs | +0.7 yr |


## Efficiency distribution

WINAICO skews to higher efficiency: 59% of lineup is 23%+


| Efficiency band | Trina Solar | WINAICO |
| --- | --- | --- |
| \<20% | 22 (6.5%) | 0 |
| 20-21% | 57 (16.8%) | 4 (9.1%) |
| 21-22% | 83 (24.4%) | 7 (15.9%) |
| 22-23% | 102 (30.0%) | 7 (15.9%) |
| 23%+ | 76 (22.4%) | 26 (59.1%) |


## Power distribution

Trina Solar offers more 600W+ panels (34% of lineup)


| Power band | Trina Solar | WINAICO |
| --- | --- | --- |
| \<400W | 28 (8.2%) | 0 |
| 400-499W | 142 (41.8%) | 27 (61.4%) |
| 500-599W | 54 (15.9%) | 12 (27.3%) |
| 600-699W | 72 (21.2%) | 5 (11.4%) |
| 700W+ | 44 (12.9%) | 0 |


## Cell technology

Dominant cell tech: TOPCon (73%)

Dominant cell tech: Back Contact (41%)


| Technology | Trina Solar | WINAICO |
| --- | --- | --- |
| TOPCon | 248 (72.9%) | 4 (9.1%) |
| PERC | 75 (22.1%) | 0 |
| Unknown | 11 (3.2%) | 10 (22.7%) |
| N-type | 6 (1.8%) | 8 (18.2%) |
| Back Contact | 0 | 18 (40.9%) |
| HJT | 0 | 4 (9.1%) |


## Top panels, Trina Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 | 24.5 | -0.260 | Monocrystalline |
| 2 | [TSM-NEG21C.20Q-755](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-755) | 755 | 24.3 | -0.260 | Monocrystalline |
| 3 | [TSM-NEG21C.20Q-750](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-750) | 750 | 24.1 | -0.260 | Monocrystalline |
| 4 | [TSM-NEG21C.20Q-745](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-745) | 745 | 24.0 | -0.260 | Monocrystalline |
| 5 | [TSM-NEG21C.20-740](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 6 | [TSM-NEG21C.20 740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 7 | [TSM-NEG21C.20Q-740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-740) | 740 | 23.8 | -0.260 | Monocrystalline |
| 8 | [TSM-NEG21C.20-735](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 9 | [TSM-NEG21C.20 735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 10 | [TSM-NEG21C.20Q-735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-735) | 735 | 23.7 | -0.260 | Monocrystalline |


## Top panels, WINAICO


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 | 25.0 | -0.260 | Monocrystalline |
| 2 | [WST-670BKX72-A2](https://comparepv.com/panel/winaico-wst-670bkx72-a2) | 670 | 24.8 | -0.260 | Monocrystalline |
| 3 | [WST-665BKX72-A2](https://comparepv.com/panel/winaico-wst-665bkx72-a2) | 665 | 24.6 | -0.260 | Monocrystalline |
| 4 | [WST-630NHX66-A4](https://comparepv.com/panel/winaico-wst-630nhx66-a4) | 630 | 23.3 | -0.240 | Monocrystalline |
| 5 | [WST-625NHX66-A4](https://comparepv.com/panel/winaico-wst-625nhx66-a4) | 625 | 23.1 | -0.240 | Monocrystalline |
| 6 | [WST-585NGX72-A7](https://comparepv.com/panel/winaico-wst-585ngx72-a7) | 585 | 22.6 | -0.290 | Monocrystalline |
| 7 | [WST-540NGX-D3](https://comparepv.com/panel/winaico-wst-540ngx-d3) | 540 | 22.8 | -0.300 | Monocrystalline |
| 8 | [WST-530NGX-D3](https://comparepv.com/panel/winaico-wst-530ngx-d3) | 530 | 22.3 | -0.300 | Monocrystalline |
| 9 | [WST-525NCX54-AW](https://comparepv.com/panel/winaico-wst-525ncx54-aw) | 525 | 23.6 | -0.280 | Monocrystalline |
| 10 | [WST-520NCX54-AW](https://comparepv.com/panel/winaico-wst-520ncx54-aw) | 520 | 23.4 | -0.280 | Monocrystalline |


## Summary

Trina Solar is a Chinese manufacturer and one of the largest solar module makers in the world, having reaffirmed its BloombergNEF Tier 1 bankability status for the eighth consecutive rating period in 2025. Its production and shipment volumes run into the tens and hundreds of gigawatts globally, particularly in the 210mm wafer format, giving it an unmatched institutional footprint among project financiers and banks. WINAICO, a Taiwan-linked brand owned by Win Win Precision Technology, has also been described by Bloomberg in past press releases as Tier 1, though more recent independent reviews dispute that current status, and reported annual capacity figures vary widely, from a few hundred megawatts to just over a gigawatt, pointing to a much smaller operation than Trina's. On institutional scale and financing credibility, Trina Solar is clearly the stronger of the two.

Trina's current lineup is built mainly around n-type TOPCon cell technology, spanning the Vertex S+ series for residential and light commercial rooftops and the higher-power Vertex N series, with modules reaching 600-725 W, aimed at utility-scale ground-mount projects. WINAICO focuses more narrowly on residential and smaller commercial installations, emphasizing build quality, high-temperature performance, and notably long warranty terms, with some product lines backed by 25 to 30-year product and performance warranties, a strength that has resonated in markets like Australia and Germany.

For a typical buyer, Trina Solar is generally the safer default thanks to its confirmed, current bankability and vast production scale, which simplifies financing and long-term service support. WINAICO can be a reasonable niche choice for buyers prioritizing extended warranties from a smaller, specialized brand, but its current Tier 1 standing and manufacturing origin for a specific model should be verified directly before purchase, since the brands are not simply interchangeable on institutional strength.

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


## Other comparisons

- [Trina Solar vs A.B. Energy](https://comparepv.com/trina-solar-vs-a-b-energy)
- [AE Solar vs WINAICO](https://comparepv.com/ae-solar-vs-winaico)
- [Trina Solar vs AEET](https://comparepv.com/trina-solar-vs-aeet)
- [AIKO vs WINAICO](https://comparepv.com/aiko-vs-winaico)
- [Trina Solar vs AKCOME](https://comparepv.com/trina-solar-vs-akcome)
- [ARTsolar vs WINAICO](https://comparepv.com/artsolar-vs-winaico)


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Source: https://comparepv.com/trina-solar-vs-winaico

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