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Manufacturer review

WINAICO panels, read off the datasheets

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...

Everything below is computed from those 44 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where WINAICO does not publish a figure, it is left out of the average rather than assumed.

Panels
44
models in the database
Average efficiency
23.0%
across the catalogue
Best efficiency
25.0%
their strongest module
Power range
400-675 Wp
smallest to largest
Bifacial share
77%
34 dual-sided models
Average warranty
29 years
guaranteed output term
01

The top of the range

The leaders of WINAICO's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof.

Most efficient module efficiency
1 WST-675BKX72-A2 Monocrystalline bifacial 675 Wp 25.0% 2 WST-670BKX72-A2 Monocrystalline bifacial 670 Wp 24.8% 3 WST-505BKX54-A2 Monocrystalline bifacial 505 Wp 24.7% 4 WST-665BKX72-A2 Monocrystalline bifacial 665 Wp 24.6% 5 WST-500BKX54-B2 Monocrystalline bifacial 500 Wp 24.5%
Sort the whole catalogue by efficiency
Highest power nameplate output
1 WST-675BKX72-A2 Monocrystalline bifacial 25.0% 675 Wp 2 WST-670BKX72-A2 Monocrystalline bifacial 24.8% 670 Wp 3 WST-665BKX72-A2 Monocrystalline bifacial 24.6% 665 Wp 4 WST-630NHX66-A4 Monocrystalline bifacial 23.3% 630 Wp 5 WST-625NHX66-A4 Monocrystalline bifacial 23.1% 625 Wp
Sort the whole catalogue by power
02

By what the array is for

Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case.

For a house roof 380-460 Wp
1 WST-450NGX-D3 Monocrystalline bifacial 450 Wp 23.0% 2 WST-450NFX54-B1 Full Black Monocrystalline bifacial 450 Wp 22.5% 3 WST-435NGX-D3 Monocrystalline bifacial 435 Wp 22.3% 4 WST-430NGXB-D3 Full Black Monocrystalline bifacial 430 Wp 22.0% 5 WST-425NGXB-D3 Full Black Monocrystalline bifacial 425 Wp 21.8%
For a commercial array 500 Wp and up
1 WST-675BKX72-A2 Monocrystalline bifacial 675 Wp 25.0% 2 WST-670BKX72-A2 Monocrystalline bifacial 670 Wp 24.8% 3 WST-665BKX72-A2 Monocrystalline bifacial 665 Wp 24.6% 4 WST-630NHX66-A4 Monocrystalline bifacial 630 Wp 23.3% 5 WST-625NHX66-A4 Monocrystalline bifacial 625 Wp 23.1%
For a ground mount dual-sided
1 WST-675BKX72-A2 Monocrystalline bifacial 675 Wp 25.0% 2 WST-670BKX72-A2 Monocrystalline bifacial 670 Wp 24.8% 3 WST-505BKX54-A2 Monocrystalline bifacial 505 Wp 24.7% 4 WST-665BKX72-A2 Monocrystalline bifacial 665 Wp 24.6% 5 WST-500BKX54-B2 Monocrystalline bifacial 500 Wp 24.5%
03

What the catalogue is made of

Cell technology across the market

Shares are of the 44 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one.

Cell technology share of the catalogue
Back Contact 40.9% 18 Unknown 22.7% 10 N-type 18.2% 8 HJT 9.1% 4 TOPCon 9.1% 4
Back Contact accounts for 40.9% of the catalogue - 18 of 44 modules.
Efficiency spread share of the catalogue
20-21% 9.1% 4 21-22% 15.9% 7 22-23% 15.9% 7 23%+ 59.1% 26
04

Strengths and gaps

Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built.

What this catalogue is good at
  • Tier 1 bankable manufacturer - recognized by major financial institutions
  • High-efficiency panels available (up to 25.0%)
  • Strong bifacial lineup - 77% of portfolio supports dual-sided generation
  • Strong warranty coverage averaging 29 years
  • High-power panels available (up to 675W) for commercial applications
  • Established manufacturer with 23+ years of experience
  • Large-scale production capacity of 0.1-1 GW
05

In short

WINAICO: WINAICO is an industry leader in efficiency, offering 44 panels suitable for both residential and commercial buyers. With an average efficiency of 23.0% and top models reaching 25.0%, their panels deliver competitive performance. As a Tier 1 bankable manufacturer, they offer strong financial backing and long-term reliability.
Common questions
Is WINAICO a good solar panel manufacturer?
WINAICO offers 44 solar panel models with an average efficiency of 23.0%. They are a Tier 1 bankable manufacturer, recognized by major financial institutions for reliability. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does WINAICO make?
WINAICO manufactures panels ranging from 400W to 675W, covering both residential and commercial applications. Their portfolio includes Back Contact (41%), Unknown (23%), N-type (18%) cell technologies.
How efficient are WINAICO solar panels?
WINAICO panels have an average efficiency of 23.0%, with their most efficient model reaching 25.0%. This puts them among the industry leaders in the current market.
Does WINAICO make bifacial solar panels?
Yes, WINAICO offers 34 bifacial panels, representing 77% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems.
What warranty does WINAICO offer on their solar panels?
WINAICO panels come with an average performance warranty of 29 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels.
Are WINAICO panels good for residential use?
WINAICO offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications.
06

Compared with

Build your own

A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes.

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